The Shizuoka Water & Maglev Tunnel Problem

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jok
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The Shizuoka Water & Maglev Tunnel Problem

Post by jok »

Shizuoka Prefecture is concerned that the water balance in the important Oi River will be severely disrupted by the construction of the tunnel for the Japanese high-speed Maglev system. The river is of considerable importance for the drinking water supply of some 600,000 people in the prefecture and is also important for the region's paper industry, which has a high demand for water. The prefecture is demanding the detour and complete return to the Oi River of all water that could be affected by the tunnel.

One of the reasons why the prefectural government and water users have demanded that JR Tokai guarantees to return the entire volume of water (from the tunnel construction is that JR Tokai has been claiming that there will be no impact from the construction of the linear railway line. JR Tokai has made several predictionsregarding the issue that seem insufficient from a scientific point of view. They lacked prior studies of geology, river flow, groundwater levels, and precipitation. It seems difficult to predict the extent of the impact when data is insufficient. The prefectural government has therefore demanded that all relevant data be researched and made available before a decision is made on tunnel construction ...

The conflict plays out against the backdrop of years of conflict of a fundamental nature between the prefecture and JR Tokai. The prefecture has long considered itself disadvantaged by JR Tokai, especially with regard to the connection of the prefectural airport and the city of Shizuoka by conventional Shinkansen trains. The bitterness in the prefecture about the plans and decisions of JR Tokai seems to be great.

While the prefectural government has consistently demanded the return of all water from the tunnel in order to avoid the impact of the construction work on the middle and lower reaches of the river, the Central Japan Railway Company has stepped up its insistence that the impact can be avoided. Without the prefecture's approval, JR Tokai will not be able to realize the tunnel for a long time. This is already delaying the entire line construction and the start of operations by years.

Image

Source: 水資源をめぐるリニア中央新幹線の有識者会議が紛糾…赤羽国交相がJR東海に苦言
https://response.jp/article/2020/05/11/334444.html Accessed 2021-04-05

The solution (in my opinion) will be a compromise that will require significant concessions from JR Tokai, including possibly a Maglev station in the prefecture (not planned so far), elaborate water return lines, and Nozomi Shinkansen stops in Shizuoka city.

For those who are interested in the overall context in more detail: Here is a link to a publication of the IMB on this topic:

https://www.researchgate.net/publication/344407084_A_Maglev_a_Tunnel_a_River_On_the_Delays_in_the_Realiziation_of_the_Tokyo-Nagoya_Maglev_Line
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Did the Department improperly alter the documentation of meetings?

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Did the Ministry of Land, Infrastructure, Transport and Tourism improperly alter the documentation of meetings?

Did the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) add text to the documentation of an expert meeting on the construction of the Shinkansen Central Line in Shizuoka Prefecture that was not actually said?

In an interview with the MLIT, it seems that in the documentation of the 9th meeting held in February this year, some words were added that were not actually said, such as "I think it is time to prepare and publish an interim summary" and "I strongly believe that it is necessary to summarize the results from a scientific and technical point of view." However, the MLIT claims rather the opposite: that some of what was actually said was deleted.

The Ministry of Land, Infrastructure, Transport and Tourism is quoted as saying, "We followed the corrections made by the committee members when we circulated the draft minutes" and "In the past, we have made additions and corrections to the minutes to make them easier to understand in written form, as long as the purpose of what was said remains unchanged, and we believe it is within the scope of such corrections this time as well."

Source: TBS News Japan, 7日 23時25分
https://news.tbs.co.jp/newseye/tbs_newseye4240715.html
Accessed: 2021-04-07
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Linear track meeting fails to take minutes as said

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The Ministry of Land, Infrastructure, Transport and Tourism (MLIT) has announced that the minutes of a meeting of experts on the Shizuoka construction zone of the Central Shinkansen Line were not prepared as said, and some parts were added or deleted after the fact. The Ministry of Land, Infrastructure, Transport and Tourism (MLIT) says it made the changes at the request of committee members, but experts say the minutes are meaningless.

Info: Based on Source: https://www.hokkoku.co.jp/articles/-/378893
Accessed: 2021-04-07

From the perspective of a domocratic form of government, it seems surprising that the results were changed. Any addition to the protocols is questionable. Behind the scenes, there seems to be going on a struggle for interpretive sovereignty ...
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Re: The Shizuoka Maglev Website

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Translated form Japanese:
Shizuoka Prefecture has recently renewed its website with information on the problem of reduced flow of the Oi River due to the construction of the Central Linear Shinkansen Line. In addition to releasing a new video explaining the geological structure of the Minami-Alps, [...] the site has been strengthened by organizing the status of the prefectural and national expert meetings.

 At the beginning of the website, the reason for the prolonged delay in resolving the issue is stated: "The dialogue is taking a long time because it is difficult for JR Tokai to submit data as a basis for dialogue. The Ministry of Land, Infrastructure, Transport and Tourism (MLIT) clearly stated the position of the expert panel: "The MLIT, feeling threatened by the speed of progress in the dialogue, established the panel to provide guidance to JR.

[...]
The website was redesigned after the prefectural assembly pointed out the need to strengthen the dissemination of information. Yasuhiro Oribe, director of the prefectural government's Life and Environment Department, stressed, "Through this site, we hope to convey the prefecture's position, which is often misunderstood, in an easy-to-understand manner to people in and outside the prefecture.
Source (in Japanese): 南アルプスの特殊な地質説明 静岡県がHP刷新【大井川とリニア】
https://www.at-s.com/news/article/shizuoka/883853.htm
Accessed: 2021-04-08
.
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Citizens' group protests against Maglev line

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Citizens' group in Kakegawa signs petition of 3,650 people to the governor to "not allow the start of construction"

 On April 7, a citizens' group called "Ogasa-Kakegawa Association for Protecting the Water and Nature of the Oigawa River from Linear," headed by Katsuyuki Sano, submitted 3,650 signatures to Governor Heita Kawakatsu, urging him not to approve the start of construction of the Shizuoka section of the Minami-Alps Tunnel for the Central Linear Railway.

 According to the citizens' group, there are about 80 members. Most of the water used for domestic, agricultural and industrial purposes in the Ogasa and Kakegawa areas, including Kakegawa City and Kikugawa City, comes from the Oi river.

Source: Mainichi Shimbun, 2021/4/8 Local Edition (in Japanese).
Online: https://mainichi.jp/articles/20210408/d ... 20/118000c
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Credibility problem of the MLIT?

Post by IMB »

The following text is a summary of key statements from a Japanese text in the Nikkan Sports Shimbun.
https://www.nikkansports.com/general/co ... 00087.html
Accessed: 2021-04-09

リニア中央新幹線有識者会議 国交省お粗末の限り/政界地獄耳
Title Translation: Japan's Ministry of Land, Infrastructure, Transport and Tourism (MLIT) has done a lousy job at the expert panel meeting on the Central Shinkansen line.
2021年4月9日8時28分

Summary
In April 2021, the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) held an expert meeting to discuss the impact of the Shizuoka construction area on water resources. The Ministry of Land, Infrastructure, Transport and Tourism (MLIT), which was supposed to mediate the conflict between JR Tokai and Shizuoka Prefecture, did not play its role. The MLIT's Railroad Bureau was out of control.

The Ministry of Land, Infrastructure, Transport and Tourism (MLIT) is suspected to have been in agreement with JR Tokai from the beginning. The problem this time was the exchange of opinions on how to summarize the interim report at the 9th meeting (February 28). It was found that the minutes were not prepared as stated, and some parts were added or deleted after the fact. This means that all of the policies set forth by the ministry have failed.

From the beginning, there were strong protests from the media and the prefecture that the comments made by the chairperson of the expert panel, Shoji Fukuoka (Professor at Chuo University's Research and Development Organization), after the meeting, did not reflect the content of the meeting.

Heita Kawakatsu, the governor of Shizuoka Prefecture, criticized the earlier meeting on March 23, saying, that the meetings follow JR Tokai's documents and lacks neutrality. He also said that the chairperson's comments were compiled outside the meeting in an undisclosed location and called for the chairperson to be replaced.
Original document/report: Nikkan Sports Shimbun (in Japanese) https://www.nikkansports.com/general/co ... 00087.html
Accessed: 2021-04-09
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"Chairman's talk is a waste of time" (?)

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Governor and others criticize Chairman of Expert panel: The Chairman's talk "is a waste of time":

The Ministry of Land, Infrastructure, Transport and Tourism's expert panel (chaired by Fukuoka Shouji, a professor at Chuo University's Research and Development Organization) has issued a written statement summarizing its discussions on the construction of the Shizuoka section of the Minami-Alps Tunnel for the Central Linear Shinkansen (Maglev). Shizuoka prefectural Governor Kawakatsu Heita and the chiefs of the Oigawa River basin are opposing the statement and have argued that the statement is unnecessary.
The Shizuoka prefectural government is also calling for an improvement in the method of producing the report privately after the meeting.

The Ministry of Land, Infrastructure, Transport and Tourism's Railway Bureau, the secretariat, insists that the chairman's report is indispensable.

Info based on Mainichi Shimbun (online): https://mainichi.jp/articles/20210410/d ... 20/183000c
Accessed 2021-04-10
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Re: The Shizuoka Water & Maglev Tunnel Problem

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Records differing from those of experts' meeting appear in minutes
Shizuoka Prefecture criticizes MLIT over water problem in linear railway construction


Shizuoka Prefecture has strongly criticized the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) for recording in the minutes of a national expert meeting to discuss water issues in the construction of the Central Linear Railway.

Governor Kawakatsu is quoted as saying: "The chairperson's comments seem to reflect the intentions of the secretariat. We were astonished to learn of this.
 According to the prefectural government, in the minutes of the ninth meeting of the expert panel held in February 2021, the chairperson of the panel made comments such as, "I think it is time for the expert panel to reflect the results of its discussions and issue an interim report," but no such comments were actually made.
 The prefectural government has called for full disclosure of the experts' meeting, but the official said, "The minutes are meant to summarize what was said in an easy-to-understand manner, but they go beyond the scope of not changing the purpose of the meeting, giving the impression that the discussion was exhaustive. It gives the impression that the discussion has been exhausted. Transparency has not been ensured," he said, strongly criticizing the MLIT.

Information translated from Japanese Source: https://news.yahoo.co.jp/articles/f7b04 ... 8470a71aa2
Accessed: 2021-04-14
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Expert panel "distrustful" of draft interim report

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有識者会議 難波副知事中間まとめ案に「不信感」
Translation: Expert panel "distrustful" of Vice Governor Namba's draft interim report

Summary of a report by Shota Wada, Asahi Shimbun.
https://www.asahi.com/articles/ASP4K74GXP4KUTPB002.html
Accessed 2021-04-18

Image
The 11th meeting of the expert panel on linear technology held at the Ministry of Land, Infrastructure, Transport and Tourism (2:04 p.m., April 17, 2021, Kasumigaseki, Tokyo; photo of the Ministry of Land, Infrastructure, Transport and Tourism)
https://www.asahi.com/articles/ASP4K74GXP4KUTPB002.html
Accessed 2021-04-18

The Ministry of Land, Infrastructure, Transport and Tourism (MLIT) held a meeting of experts at the ministry on April 17 [...]. The government presented a revised draft interim report based on the content of the previous meeting.

After the meeting, Takashi Namba, Vice Governor of the Ministry of Land, Infrastructure, Transport and Tourism, said, "I was quite surprised at the contents of the draft based on the analytical model, such as the fact that river flow in the middle and lower reaches will be maintained. After the meeting, Mr. Takashi Namba, Vice Governor of Japan, expressed his dissatisfaction with the way the report was compiled, saying, "I was quite surprised at the contents of the report, and I thought that JR Tokai and the Ministry of Land, Infrastructure and Transport (MLIT) did not understand it.

 The meeting mainly discussed efforts to avoid or reduce the impact on the use of water resources. [...]

The total amount of water inflow that may occur as a result of the tunnel excavation was estimated based on the example of the Seikan Tunnel.
[...]

Vice Governor Namba is reported as saying: "I would like you to stop using models for analysis. I can't help but have a sense of distrust.


url]https://www.asahi.com/articles/ASP4K74GXP4KUTPB002.html[/url]
Accessed 2021-04-18
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Re: The Shizuoka Water & Maglev Tunnel Problem

Post by Miss Maglev »

Summary and translation of Japanese article:
リニアで対話路線を重視 岩井氏が正式出馬表明
https://www.asahi.com/articles/ASP5H0DN3P5GUTPB00V.html
Accessed: 2021-05-15

On June 14, Shigeki Iwai, 52, former Vice Minister of Land, Infrastructure, Transport and Tourism, held a press conference in Shizuoka City to announce his candidacy in the upcoming gubernatorial election. With regard to the issue of the Central Linear Railway Shinkansen, which is considered to be the biggest point of contention, Iwai indicated that he would promote dialogue with the central government and JR Tokai, highlighting the differences between him and the current Governor Heita Kawakatsu, who is taking a more confrontational stance.

 Iwai said, "The water of the Oi River is the water of life. We cannot proceed without the understanding of the residents. On the other hand, he said, "It is also important to communicate well with them," pointing out the need for discussions with the national government and JR to overcome the situation.

https://www.asahi.com/articles/ASP5H0DN3P5GUTPB00V.html
Accessed: 2021-05-15
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Maglev Tunnel as an election campaign theme

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The election for Shizuoka Prefecture's governor, which will be held in June 2021, is expected to be a head-to-head contest.
 Supporters of newcomer Shigeki Iwai (former vice minister of Land, Infrastructure, Transport and Tourism) harshly criticized the current prefectural administration of incumbent Govenor Heita Kawakatsu, saying, "The Governor talks about a lot of problems, but there are no results to show what he has done".

 On the other hand, Govenor Kawakatsu described the MLIT (Ministry of Land, Infrastructure, Transport and Tourism) and the Central Japan Railway Company (JR Tokai) as "powerful forces" in a video message he sent to the opening of his office in Shizuoka City on March 16. Speaking about himself on the campaign trail, he said, "I feel like a weak person standing up to a giant. Once the water is lost, it will not come back. We have to resist," he said.

 Govenor Kawakatsu, who has criticized JR and the national government's handling of the water problem in the Linear-Maglev project, has previously ridiculed Mr. Iwai, then vice minister of MLIT, as now being "the face of the national government" (because of Mr. Iwai's support for the Linear-Maglev project), and seems to be positioning the gubernatorial election as a " substitute war" against the proponents.

Info based on a report of Sankei NEws:
静岡知事選、リニア建設巡り「代理戦争」 推進・反対で舌戦
https://www.sankei.com/politics/news/21 ... 18-n1.html
Accessed on May 18, 2021.
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Maglev Tunnel as an election campaign theme

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In an interview on May 18, JR Tokai president made no mention of the Shizuoka gubernatorial election, instead saying that 'eliminating residents' concerns is the most important thing' for linear maglev construction.

Shin Kaneko, President of JR Tokai, stressed the need to continue to explain the ongoing conflict with the prefecture over the outflow of spring water from the tunnel construction. "The most important issue in the water problem is to resolve the concerns of the people in the middle and lower reaches of the Oi River about the use of water".

 Last week, a citizens' group submitted about 20,000 signatures to the prefectural government regarding the construction of the linear line Shinkansen. The prefectural government has informed the JR Tokai about this.

Info based on
JR東海社長、静岡県知事選に言及せず リニア工事には「住民の不安解消が一番大事」
https://news.yahoo.co.jp/articles/4b7b7 ... b132e03ee1
Accessed May 19, 2021
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Maglev Tunnel as an election campaign theme

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県知事選 4選狙う現職VS前国交副大臣 コロナ、リニア 政策の違いは 

Image
Source: https://www.tokyo-np.co.jp/article/105375
Accessed 2021-05-20

Summary of a report in Japanese media:
Info based onhttps://www.tokyo-np.co.jp/article/105375
Accessed 2021-05-20


As for the linear railway, current Governor Kawakatsu has not approved the start of construction of the Shizuoka section, citing concerns about the decline in the volume of water in the Oi River and the impact on the natural environment of the Southern Alps.

Governor Kawakatsu pointed out that, Mr. Iwai, his competitor in the upcoming election, was the "face of the Ministry of Land, Infrastructure, Transport and Tourism" because he was the Vice Minister of Land, Infrastructure, Transport and Tourism, and that he was composed of "conflicting opinions on the side of advancing the linear railway and the side of stopping it.

Mr. Iwai said that the construction of the Linear maglev should not begin without the understanding and cooperation of the residents of the Shizuoka basin. He emphasized that the understanding of the watershed area is a prerequisite.

Governor Kawakatsu pointed out that "the most important difference" is how to return all the spring water generated by the tunnel construction, including that flowing out of the prefecture, and rejected JR Tokai's proposal to return all the spring water in Yamanashi Prefecture over a period of up to 20 years, saying, "I have concerns about whether we can protect the water and organisms in the basin.

Mr. Iwai recognized that the "gap with the prefecture has not been bridged even at the (MLIT's) expert meeting" regarding the return of all the water. It is important to base the decision on scientific evidence. It is important to base the decision on scientific evidence, and we need to think about it without bias," he said, without stating the necessity of returning the entire amount.


Info based onhttps://www.tokyo-np.co.jp/article/105375
Accessed 2021-05-20
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Shizuoka disapproval of the draft interim report

Post by Miss Maglev »

 Shizuoka Prefecture has expressed its disapproval of the draft interim report of the Ministry of Land, Infrastructure, Transport and Tourism's expert panel to review JR Tokai's environmental measures for the Shizuoka section of the Central Linear Shinkansen, making the future of the discussion uncertain. Governor Heita Kawakatsu has gone so far as to call for the replacement of the chairperson of the panel, claiming that the panel is not neutral and approves of JR Tokai's plans.

Source: https://www.chukei-news.co.jp/news/2021 ... 250801_01/
Accessed: May 25, 2021
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Re: The Shizuoka Water & Maglev Tunnel Problem

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静岡県知事選公開討論会 リニア問題白熱 川勝氏/生態系や水質にも問題 岩井氏/住民判断 ルート変更も

Shizuoka gubernatorial election open debate: Kawakatsu: Linear railroad issue heated up; Iwai: Residents may decide to change route

Translated info and summary of a Japanese report

https://www.at-s.com/news/article/shizuoka/906481.html Accessed on 2021-05-26

On June 25, incumbent Heita Kawakatsu (72) and former councilor Shigeki Iwai (52), both of whom have announced their candidacy in the upcoming gubernatorial election [...] attended an open debate hosted by the Shizuoka Junior Chamber of Commerce and Industry at Shimizu Terrsa in Shimizu Ward, Shizuoka City. When Mr. Iwai took a tough stance against JR Tokai, saying that "changing the route or stopping the construction is an option", Mr. Kawakatsu responded with "a very important comment", and a heated discussion ensued.
[...]

They asked each other questions on the issue of the linear Maglev. Kawakatsu asked Mr. Iwai whether he agreed or disagreed with the draft of the interim report compiled by the expert committee of the Ministry of Land, Infrastructure, Transport and Tourism, which states that after the tunnel is dug, spring water from Yamanashi Prefecture will be pumped up for about 20 years. Mr. Iwai emphasized his strict stance, saying, "We will not approve the project unless the residents of the basin understand it. Mr. Kawakatsu responded by saying that it was only natural to obtain the understanding of the local residents and asked again whether he agreed or disagreed with the draft report, but time ran out.
 Mr. Iwai's reference to changing the route and stopping construction was also in response to Mr. Kawakatsu's question, and Mr. Iwai responded, "If the local residents make a decision, I will convey that decision. If the local residents make a decision, I will convey it to them." When Mr. Kawakatsu asked whether Mr. Iwai was speaking from the responsibility of the LDP as a whole, Mr. Iwai said, "That may happen based on the situation at the time".


https://www.at-s.com/news/article/shizuoka/906481.html Accessed on 2021-05-26
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Re: The Shizuoka Water & Maglev Tunnel Problem

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どうなるリニア 静岡・川勝知事〝けんか戦法〟の歴史と功罪
Summary of a Japanese Media report
We have been asking JR Tokai to return all the spring water from the tunnel, but they have not responded in good faith. It is difficult to cooperate with JR Tokai at this time.

In October 2009, Governor Heita Kawakatsu, who had just won a third term in office at the time, held a press conference to express his dissatisfaction with JR Tokai over the decline in the volume of water in the Oi River in relation to the Shizuoka construction zone of the Central Linear Shinkansen. In a press conference, he vented his dissatisfaction with JR Tokai, saying, "They have not expressed any remorse, they have not given any explanation, and they have not promised to bring back the full amount of water.


Source: https://www.sankei.com/article/20210601 ... VJSKLG5SA/ Accessed: 2021-06-01
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Aerial view of the Tunnel area in the Japanese Alps

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2021-06-07_tunnel_aerial_view
2021-06-07_tunnel_aerial_view
.
The upper stream of the Oi River, where a tunnel for the Central Linear Railway is planned.

Photo by website: https://www.at-s.com/news/article/shizuoka/911903.html Accessed june 7, 2021
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JR Tokai: "We will resolve the maglev problem as soon as possible"

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2021-06-10 JR Tokai president statement
2021-06-10 JR Tokai president statement
Screenshot of yahoo Japan: 6/10(木) 12:48配信 https://news.yahoo.co.jp/articles/fa0cb ... 2b79b8b436 Accessed: 2021-06-10

Before a top meeting with the Shizuoka governor over the linear railway construction, JR Tokai President Kaneko reiterated his stance to solve the water problem as soon as possible.

Earlier, JR Tokai President Kaneko had met with the governor at the prefectural government office and asked for his understanding of the preparatory work before digging the tunnel. However, the prefectural government did not give permission and the construction has not started until today. In a press conference on June 9, 2021, JR Tokai President Shin Kaneko said that he would continue to explain the situation in an easy-to-understand manner at the national expert committee in order to resolve the concerns of the residents. He said that JR Tokai will continue to work hard to solve the problem: "We will do our best".

Info based on yahoo Japan: 6/10(木) 12:48配信 https://news.yahoo.co.jp/articles/fa0cb ... 2b79b8b436 Accessed: 2021-06-10
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JR, the National Government, and Shizuoka Prefecture

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JR, the National Government, and Shizuoka Prefecture to Discuss the Future of the MLIT Expert Meeting: Discussion Points and Impacts on the Volume of Water in the Midstream and Downstream Areas

Summary and English translation of Japanese Media Report: Source: https://www.at-s.com/news/article/shizuoka/913850.html
Accessed: 2021-06-11

One of the main issues in the Shizuoka Prefecture gubernatorial election to be held on March 20 is the water supply problem of the Oi River due to the construction of the Central Linear Railway Shinkansen. How will the construction of a long tunnel through the Southern Alps, the source of water, affect the use of water in the middle and lower reaches of the river? The following is an overview of the discussions at the expert panel held by the Ministry of Land, Infrastructure, Transport and Tourism, including JR Tokai's explanation and the views of the prefectural government.

The Ministry of Land, Infrastructure, Transport and Tourism (MLIT) has held 11 expert meetings since last April. No conclusions were reached in April this year in Tokyo.

JR Tokai's view and explanation

 The Ministry of Land, Infrastructure, Transport and Tourism's Expert Council was set up by the Ministry's Railway Bureau in April last year to provide guidance to JR. Experts in hydrology, tunnel engineering, and other fields are discussing the impact of the tunnel on water use on the following themes:
1) how to return all the spring water from the tunnel to the surface water of the Oi River, and
2) the impact of the tunnel on the groundwater in the middle and lower reaches of the Oi River.
JR also presented a proposal to return spring water generated in Yamanashi and Nagano prefectures over a period of time after the tunnel is penetrated, as a measure to ensure the return of all spring water from the tunnel as requested by the prefecture.

Surface water
JR Tokai's explanation: Can be maintained by making up for the decrease
 According to the flow forecast (assuming the tunnel is not covered with concrete or tarpaulins), surface water in the middle and lower reaches of the tunnel will not decrease. The flow rate will be maintained because the spring water from the Shizuoka section will be returned to the Oi River to compensate for the decrease in surface water upstream.
 However, if the geological conditions and precipitation assumptions on which the projections are based are different, the amount of water flowing out of the prefecture and the amount returned to the Oi River will change, and the amount of surface water in the middle and lower reaches of the river may decrease.
 Considering the safety of the construction, until the tunnel is penetrated, spring water from the sections dug from the Yamanashi and Nagano prefectures will not be returned to the Oi River and will flow out of the prefecture. Even in such a case, if the water from the tunnel in the Shizuoka section is pumped up and returned to the Oi River, the volume of surface water in the middle and lower reaches of the river will be maintained, except in the case of power outages.

Discussions at the MLIT expert meeting: Unclear if the predictions are correct

 If the volume of water inflowing into the tunnel is the volume assumed by JR Tokai, the facility plan is to be able to return the entire volume of water inflowing into the Oi River after the tunnel is penetrated using a conduit tunnel and pump-up.
 However, according to JR's construction plan, the tunnel will be excavated from the Yamanashi side near the border between Shizuoka and Yamanashi prefectures to ensure construction safety, so the spring water will flow out of the prefecture until the tunnel is penetrated, and not all of it will be returned.
 JR's predictions for the flow rate of the tunnel have shown that the amount of surface water will be maintained even if the tunnel water flows out of the prefecture, but the predictions are based on existing data on geology and precipitation, and have not been examined to see if they are sufficient. It is unclear if the predictions are correct.


The prefectural government's view: Conduct additional surveys before construction begins.

  If the spring water from the tunnel were to flow out of the prefecture, it would inevitably have an impact on water use in the middle and lower reaches of the Oi River. The Ministry of Land, Infrastructure, Transport and Tourism (MLIT) expert panel has been particularly inadequate in discussing the impact of the spring water flowing out of the prefecture. Additional geological surveys are needed before the start of construction and the accuracy of the estimated amount of outflow from the prefecture needs to be improved.
 In order to avoid the impact of outflow, it is important to have a detailed understanding of the volume of "sudden water inflow" that occurs in large quantities at the tip of the tunnel during excavation. If the estimated volume of water near the border of the two prefectures is low, then the border of the construction area should be aligned with the border of the two prefectures, and the tunnel should be bored downward from the Shizuoka side toward the border of Yamanashi and Nagano prefectures to prevent water from flowing out of the tunnel.
 In the event of a prolonged power outage due to an earthquake or other large-scale disaster, securing the backup power supply needed to pump up the spring water will also be an issue.

Groundwater
JR Tokai's explanation: Water level drop converged in upstream
 According to the analysis of the composition of groundwater in the upstream and middle and downstream areas, the main recharge source of groundwater in the middle and downstream areas is not considered to be groundwater in the upstream area. The extent of groundwater level decrease due to tunnel excavation has converged near the exit of the conduit tunnel.

Discussion by MLIT expert committee: Continuation of water level observation is necessary.
 Once the groundwater in the upstream area becomes surface water, it flows down and becomes groundwater in the middle and downstream areas, so if the amount of surface water in the middle and downstream areas is maintained, the impact on the amount of groundwater will be very small. If the amount of surface water in the middle and lower reaches of the river is maintained, the impact on the amount of groundwater will be very small. We do not know the specific impact and should continue to observe groundwater levels.

The prefectural government's view: Observation should be useful for countermeasures.
 There is no zero impact. A series of observation wells should be installed from upstream to midstream and downstream. It is necessary to increase the number of observation points for groundwater levels and take measures to understand them. It is necessary to increase the number of observation points of groundwater level to understand the situation.

Proposal to return water inflow after penetration
JR Tokai explained that it would take 10 to 20 years to return the same amount of water.
 It is inevitable that spring water from the tunnel will flow out of the prefecture, but instead, after the tunnel is penetrated, the same amount of water will be returned to the tunnels in Yamanashi and Nagano prefectures over a period of time. The estimated outflow to the Yamanashi side is 3 to 5 million tons (equivalent to about 10,000 elementary school swimming pools). It is estimated that it will take 10 to 20 years to return the same amount of water.

Discussions at MLIT expert meeting: Effective risk countermeasures
 Isn't this an effective risk management measure? The secretariat (Ministry of Land, Infrastructure, Transport and Tourism, Railway Bureau) and I thought about this idea. There is an issue of time lag, but the idea is to compensate for the spring water that has flowed out. JR will consult with the prefectural government and cities and towns in the basin regarding the specific method.

The prefectural government's view: The impact cannot be avoided.
 If it takes a long time to return the water, the water in the Oi River will decrease in the meantime, and the impact cannot be avoided. It is questionable whether the amount and quality of water to be returned will be sufficient when considering the possibility of a massive outflow due to a sudden spring. The detailed geology of the area is unknown, and there is a possibility that the situation will not turn out as expected.


Source: https://www.at-s.com/news/article/shizuoka/913850.html Accessed: 2021-06-11
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Status of the Shizuoka Water & Maglev Tunnel Problem

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 Talks on the resumption of construction of the linear railway between the prefectural government, which is concerned that the tunnel construction will reduce the flow of the Oi River, which runs through Shizuoka Prefecture, and JR Central, which is the main operator of the project, are running at a parallel track.
 In April last year, the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) set up an expert panel consisting of river engineering experts to mediate between the prefecture and JR Tokai. In March of this year, the ministry released a draft of an interim report that was in line with JR Tokai's assertion that the flow rate in the middle and lower reaches of the river would be maintained if the spring water discharged during the construction work was returned through a water channel tunnel.
 However, Mr. Kawakatsu protested. The expert panel is also discussing the impact on the ecosystem around the construction zone, and the timing of the final report cannot be predicted. Even if the final report is completed, it is unclear whether the prefectural government will accept it, and a MLIT official said, "We have no choice but to carefully fill in the gaps (in the arguments between JR Tokai and the prefecture).

 The suspension of construction on the Shizuoka section has made it difficult to open the Tokyo-Nagoya line between Tokyo and Nagoya in 2027, as originally planned, and the prospect of a new opening remains uncertain.
Kawakatsu stressed to his supporters in Shizuoka City on the evening of the 20th (after his victory in the gubernatorial elections) "the people of the prefecture have entrusted me with the question of whether or not we can protect the natural environment. Afterwards, he told reporters, "I will continue to have a thorough dialogue with JR Tokai".


English translation and summary of a Japanese Media report https://www.jiji.com/jc/article?k=2021062000383&g=pol
Accessed June 20, 2021

Image
Shizuoka Governor Heita Kawakatsu takes questions from reporters on a forest road leading to the construction site of the Central Linear Railway in Shizuoka City in July 2020.
Japanese Media report https://www.jiji.com/jc/article?k=2021062000383&g=pol
Accessed June 20, 2021
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jok
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NHK: The Shizuoka Water & Maglev Tunnel Problem

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Summary and translation of a Japanese report NHK

Image
Source: https://www3.nhk.or.jp/news/html/202106 ... 61000.html Accessed: 2021-06-24

The Central Japan Railway Company (JR Tokai) is aiming to open a line between Shinagawa and Nagoya in 2027. It will connect the two major cities in as little as 40 minutes, passing through Shizuoka and other prefectures.
Expectations for economic revitalization are high, and there are many calls for an early opening.
On the other hand, Shizuoka Prefecture is concerned about the impact on the water of the Oi River, which supports the lives of 620,000 people in the basin and is called "the water of life" by the locals. The reason for this is that a linear railway tunnel is planned to run under the headwaters of the Oi River, deep beneath the Southern Alps.

In October last year, about 100 people in the basin, including tea growers, a specialty of Shizuoka Prefecture, filed a lawsuit in court to stop the construction in the prefecture.

The tunnel, which is considered to be one of the most difficult to build along the linear railway line, will be dug at a depth of up to 1,400 meters below the surface of the mountain. It is believed that a large amount of groundwater, which is the source of water for the Oi River, is stored underground.
According to an estimate by JR Tokai, if no measures are taken, the water in the Oi River will decrease by up to 2 tons per second as a result of the groundwater gushing into the tunnel due to the construction.

This is said to be equivalent to enough water for 600,000 people.

[...]

Ahead of the gubernatorial election, NHK conducted an Internet survey of 1,000 prefectural residents over the age of 18.
When asked what they expected most from the linear railway, the answer chosen by the largest number of people, 41%, was "Nothing.
The answer chosen by the largest number of respondents (41%) was "I have no expectations," far exceeding the next most popular answers of "shortening travel time" (18%) and "revitalizing the Japanese economy" (16%).
There are no plans to build a linear line station in Shizuoka Prefecture. In my interviews, I often hear people say, "Since there will be no station, there is no benefit.

On the other hand, when asked what they are most worried about, 37% answered "the impact on water resources", followed by "the impact on the ecosystem of the Southern Alps (20%)", indicating that nearly 60% are concerned about the impact on the environment.

The survey suggests that people are becoming more concerned about the destruction of the environment rather than their expectations for the linear line.


Source: https://www3.nhk.or.jp/news/html/202106 ... 61000.html Accessed: 2021-06-24
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Shizuoka Water & Maglev Tunnel Problem

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Summary of translated Japanese Media news:  In 2014, the prefectural government requested JR to return all spring water generated in the in-prefecture section during the construction period and after the railway was put into service as part of the environmental impact assessment procedure, and President Kaneko announced the return of all water.

 Mutsumi Asaba, secretary-general of the Oigawa Right Bank Land Improvement District, which supplies water to farmers, said of the president's statement, "I feel like he is evading responsibility. JR doesn't have the attitude of not allowing water to flow out as much as possible. The relationship of trust is important," he said.

 It is said that a large amount of water is released when excavating through water-containing ground, and JR has repeatedly explained the possibility of the tunnel tip being underwater during excavation. When the Minami-Alps Tunnel is dug from Yamanashi and Nagano prefectures, the spring water in Shizuoka Prefecture flows out to other prefectures at a gradient, and the amount of spring water on the Yamanashi side alone is said to be equivalent to about 10,000 elementary school swimming pools.
   
 A spokesman for JR Tokai said that when asked by Governor Heita Kawakatsu (at a top-level meeting in June last year) what he would do if the full amount could not be returned, President Shin Kaneko said, "In the end, we will make sure that people who use water from the Oigawa River do not suffer. The press conference held on June 17 this year was to the same effect. He did not say whether or not the full amount of water would be returned during the construction period.


Info Source: https://www.at-s.com/news/article/shizuoka/931015.html Accessed: July 18, 2021
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Re: The Shizuoka Water & Maglev Tunnel Problem

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The construction of the Central Linear Railway, which JR Tokai aims to open between Shinagawa, Tokyo and Nagoya in 2027, has come to a standstill. This is because Governor Heita Kawakatsu, who is concerned about the environmental impact of the construction of a tunnel under the Southern Alps in northern Shizuoka Prefecture, has refused to allow construction to begin. Kawakatsu won the gubernatorial election in June, when the linear railway issue was the main point of contention. Since then, with the support of the people of the prefecture, he has been pressing the company to change the route of the project at various occasions, and the situation has become increasingly confusing.

Image

Source: https://sankei-sankei-prod.cdn.arcpubli ... EUFMKY.jpg
https://www.sankei.com/article/20210728 ... FJISYSC4I/ Accessed: 2021-07-28
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The Shizuoka Water & Maglev Tunnel Problem

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Shizuoka Linear-Maglev Shinkansen

リニア新幹線の行方

Translated and summarized info from Mainichi Shimbun 2021/8/27 Tokyo Morning Edition
A Commentary by Shizuoka Governor Heita Kawakatsu

With regard to the Linear Central Shinkansen (between Tokyo's Shinagawa and Nagoya) to be developed by JR Tokai, the opening of the line in 2027 is in jeopardy because Governor Heita Kawakatsu of Shizuoka Prefecture, where part of the running route is located, has continued to refuse to start construction, and he was elected governor by a wide margin in June this year. The prolonged corona disaster has reduced long-distance travel, and some are questioning the necessity of the project.

 In the June election for the governorship of Shizuoka Prefecture, I, the incumbent, won an overwhelming victory over a candidate nominated by the Liberal Democratic Party. The main concern of the voters was the Linear Central Shinkansen. I am not opposed to the linear line itself, but if it starts service, the number of Hikari and Kodama trains on the Tokaido Shinkansen is expected to increase, which will benefit Shizuoka Prefecture. In response to a report by the Central Japan Railway Company that the tunnel construction would lower the groundwater level in the specially protected area of the Minami-Alps National Park by more than 300 meters, I strongly argued that construction work that would deprive the lives of the biota of the Minami-Alps, a UNESCO Eco Park, was unacceptable. In the meantime, the Liberal Democratic Party (LDP) candidate is campaigning for the election.

 On the other hand, when the LDP candidate entered the election campaign, he repeatedly said in public that he would change the route of the linear railway and stop the construction, surprising voters who thought he was a proponent of the linear railway. Both candidates, myself and the Liberal Democratic Party (LDP), spoke out harshly against the Central Japan Railway Company (JRTC) for the construction of the South Alps Tunnel.


https://mainichi.jp/articles/20210827/d ... 70/008000c 2021-08-21
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How to resolve the conflict between JR Tokai and Shizuoka Prefecture?

Post by Eurorapid »

リニア中央新幹線建設へ「大井川」をめぐるJR東海と静岡県との対立 解決の糸口はどこに?

How to resolve the conflict between JR Tokai and Shizuoka Prefecture over the Oigawa River for the construction of the Central Linear Shinkansen?

Author: Jun Umehara, Railroad journalist. Born in 1965. After graduating from university, he joined Mitsui Bank (now Sumitomo Mitsui Banking Corporation) and worked in the editorial department of the monthly magazine "Tetsudou Fan" published by Koyu Sha before starting his career as a railroad journalist in 2000. He has written many books, including "Shinkansen wo Osuru Gijutsu" (SB Creative), "Can JR Survive?" (Yosen-sha), and "Densha-tachi no 'Dai-ni no Seikatsu'" (The Second Life of Trains) (Kotsu Shimbun).

Source: https://news.yahoo.co.jp/byline/umehara ... 5-00256462 Accessed: 2021-09-08

English translation and partially shortened text/summary of a Japanese Report:
The will of the people of Shizuoka Prefecture became clear in the gubernatorial election

 The biggest issue in the construction of the Central Linear Railway Shinkansen by JR Tokai is the understanding and cooperation of Shizuoka Prefecture. In June, Heita Kawakatsu was elected governor of the prefecture, and his policy of not granting construction permits for the section of the line that runs through the prefecture was supported by the people of the prefecture. So let's try to sort out what the issues are between JR Tokai and Shizuoka Prefecture and find a solution.

 The Central Japan Railway's track length is 285.6 km between Shinagawa and Nagoya. Of the 285.6 km, 10.7 km of it will pass through Shizuoka Prefecture in the 25.0 km-long Minami-Alps Tunnel.

{...]

 The Minister of Land, Infrastructure, Transport and Tourism has approved the construction of the Linear Central Shinkansen, so JR Tokai can ignore the wishes of Shizuoka Prefecture and proceed with construction. However, Akihiro Ota, the Minister of Land, Infrastructure, Transport and Tourism at the time, required "understanding and cooperation of the local community through careful explanations to local residents" and "safe and reliable construction of the Minami-Alps Tunnel and other tunnels" when approving the project. In other words, the understanding and cooperation of the governor of Shizuoka Prefecture, who represents the local residents, is required.

 In addition, under the River Law, the construction of the Linear Central Shinkansen cannot be approved without the Governor of Shizuoka Prefecture. This is because the facilities that use riverbed land for which permission is required include railroad tunnels, and the Minami-Alps Tunnel runs under the Oi River. Although the Oigawa River is a first class river managed by the national government, Shizuoka Prefecture has been entrusted with some of the authority by the national government.

What are the points of contention between JR Tokai and Shizuoka Prefecture?

 The main point of disagreement between JR Tokai and Shizuoka Prefecture is the Oi River. Let me briefly state the points of contention between the two sides. How much water will be lost from the Oi River due to the construction of the Minami-Alps Tunnel, and how will that water be replaced?

 The groundwater in the Southern Alps, which was originally supposed to flow into the Oi River, will become spring water in the tunnel as a result of digging the Minami-Alps Tunnel. With today's civil engineering technology, no matter how sturdy the tunnel is made of concrete, it is impossible to completely prevent the water from flowing out.

 JR Tokai estimates that the average volume of spring water in the Shizuoka Prefecture section of the Minami-Alps Tunnel is 2.67 cubic meters per second. On the other hand, the amount of water flowing into the Oi River, which will be reduced by the construction of the tunnel, is predicted to average about 2 cubic meters per second, from 11.9 cubic meters before construction to 9.87 cubic meters at the Tokusa weir of the Akaishi Power Plant upstream. It should be noted that these estimates were based on the assumption that the tunnel would not be concreted, which is unlikely to be the case in reality, so the volume of spring water is expected to decrease. In reality, this is not possible, so the amount of spring water is expected to decrease. However, JR Tokai has not announced how much this amount will be.

On September 7, 2021, the statement "JR Tokai estimates that the volume of spring water in the entire South Alps Tunnel averages 2.67 cubic meters per second" was revised to "JR Tokai estimates that the volume of spring water in the Shizuoka Prefecture section of the South Alps Tunnel.

 In response, Shizuoka Prefecture argues that there is no scientific basis for the figures released by JR Tokai. Although they are highly accurate, they are still estimates, and the changes in the amount of water flowing into the Oi River that the tunnel will cause will not be determined until it is completed. While Shizuoka Prefecture's argument is understandable, many people will be surprised to learn that they have stumbled at this stage.

 Assuming that the amount of water flowing into the tunnel is correct, the average of 2.67 cubic meters per second of water flowing into the tunnel in Shizuoka Prefecture will flow to the east side of the tunnel (Yamanashi Prefecture) and to the west side of the tunnel (Nagano Prefecture). The problem can be solved by diverting an average of about 2 cubic meters per second of the spring water that reaches the tunnel entrances to the Oi River. However, the entrance and exit of the Minami-Alps Tunnel is far from the Oi River on both the east and west sides, making it impossible to realize.

September 7, 2021: "Spring water in the tunnel that is estimated to average 2.67 cubic meters per second" has been corrected to "Spring water in the tunnel that is estimated to average 2.67 cubic meters per second in the section in Shizuoka Prefecture.

 Therefore, JR Tokai announced that they would use a different method to return the water from the Oi River that will be lost due to the construction of the Minami-Alps Tunnel. From a point in Shizuoka Prefecture in the Minami-Alps Tunnel, which runs from the Yamanashi Prefecture side in a west-northwest direction, to Sawarajima in the Oi River basin, first in an east-southeast direction and then in a south-southeast direction, an 11.5-km-long conduit tunnel will be dug to discharge the spring water into the Oi River. Sawarajima is located about 2 km downstream from the Akaishi Power Plant's Kisai weir. The total volume of the spring water, including that pumped into the conduit tunnel and that pumped into the conduit, is estimated to be an average of 2.67 cubic meters per second.

[...]

 Although Shizuoka Prefecture appreciates the water conduit, they question it, citing what will be done with the reduced amount of flowing water upstream of Sawarajima, and even downstream of that, the amount of groundwater appearing on the surface will be reduced, which will ultimately reduce the amount of flowing water in the Oi River. However, the difference in elevation between the South Alps Tunnel and Sawarajima is 12 meters, and if the outlet of the conduit is placed upstream of Sawarajima, the difference in elevation will be less, and there is a high possibility that water will not flow.

 Shizuoka Prefecture, in response to JR Tokai's claim that 2.67 cubic meters per second of water will be returned, "demanded that the entire amount of (tunnel spring water) be returned to the Oigawa River permanently and without fail" (First Linear Central Shinkansen Shizuoka Construction Area Expert Meeting, "Handout 1-2: Main Background of the Oigawa River Water Resources Issue," April 27, 2020, page 1/3). It is claimed that It seems that they are just saying the same thing with different expressions, so there is no discrepancy between their arguments. However, in my interpretation, there are glimpses that Shizuoka Prefecture sometimes refers to the "tunnel" not as the section in Shizuoka Prefecture, but as the entire section in Yamanashi and Nagano Prefectures. It seems unlikely that the two sides will be able to come to an agreement.

In addition, Shizuoka Prefecture is insisting that the entire volume of spring water generated in the Minami-Alps Tunnel, or 2.67 cubic meters, be returned, rather than the average of 2.35 cubic meters per second. (The 1st Linear Central Shinkansen Shizuoka Construction Area Expert Meeting, "Handout 1-2: Main Background of the Oigawa River Water Resources Issue," April 27, 2020, page 1/3). It seems that they are just saying the same thing with different expressions, so there is no discrepancy between their arguments. However, in my interpretation, there are glimpses of the claim that Shizuoka Prefecture sometimes expands the scope of "tunnel" to include all sections of Yamanashi and Nagano prefectures, instead of the section in Shizuoka Prefecture in the Minami-Alps Tunnel.

There are parts of the project that do not meet Shizuoka Prefecture's demands in terms of safety.

 To cite a few more, Shizuoka Prefecture has asked JR Tokai that the flow of water in the Oi River should not be reduced even while the Minami-Alps Tunnel is being dug, and although JR Tokai initially showed its willingness to comply with Shizuoka Prefecture's request, after an investigation it replied that it was not possible, mainly for safety reasons.

 In order to meet Shizuoka Prefecture's request, the 25.0km-long Minami-Alps Tunnel would have to be bored from the middle section in Shizuoka Prefecture. This is because if the tunnel is dug from the Yamanashi side, close to the entrance and exit of the fault zone where a large amount of groundwater is believed to exist on the border between Shizuoka Prefecture and its eastern neighbor Yamanashi Prefecture, the spring water will not flow into the Oi River.

 You may think it is impossible to dig a tunnel from the middle of a mountain, but theoretically it is possible. In order to dig the Minami-Alps Tunnel, a steeply sloping tunnel called the Sengoku Leaning Pit is being constructed from a higher place than the Minami-Alps Tunnel to reach a section in Shizuoka Prefecture. The Sengoku shaft will provide an additional work area for the construction of the tunnel and will also serve as an evacuation route once completed. Shizuoka Prefecture's hopes would be fulfilled if the tunnel could be bored through this inclined shaft into the fault zone at the prefectural border and the spring water could be channeled into a water conduit.

 However, it is a downhill slope from the Sengoku shaft to the prefectural border fault zone, so even if a larger-than-expected volume of spring water is generated when the fault zone is reached, it will not flow behind the work site, and there is a limit to the amount of water that can be drained by pumps. The amount of water that can be drained by pumps is also limited. If this were to happen, the work site would be submerged and the workers would be in mortal danger. These are the reasons for safety. Shizuoka Prefecture seems to have understood the situation, but it does not seem to have dropped its original argument.

 Despite Shizuoka Prefecture's claims, as of this moment, spring water from the Minami-Alps Tunnel construction in Yamanashi Prefecture is still flowing into the entrance on the Yamanashi side, and spring water from Nagano Prefecture is still flowing into the entrance on the Nagano side. The reason for this is that construction is already underway at the east and west entrances of the tunnel to create an advanced tunnel to drain the spring water and increase the working area of the main shaft through which trains pass.

Despite Shizuoka Prefecture's claims to the contrary, at this point the spring water generated by the Minami-Alps Tunnel construction is still flowing into Yamanashi and Nagano Prefectures. Despite Shizuoka Prefecture's claim, even at this point in time, spring water from the Minami-Alps Tunnel construction in Yamanashi Prefecture is flowing into the entrance on the Yamanashi Prefecture side, and spring water in Nagano Prefecture is flowing into the entrance on the Nagano Prefecture side.

 The amount of spring water expected to flow to the entrances and exits on both Yamanashi and Nagano prefectures when the Minami-Alps Tunnel is completed is shown in "8-2-4 Water Environment - Water Resources for both Yamanashi and Nagano Prefectures in the Central Shinkansen (between Tokyo and Nagoya City) Environmental Impact Assessment (August 2014)" by JR Tokai. According to the "Water Environment - Water Resources," the maximum average water flow rate is 0.17 cubic meters per second in the Kawachi River (midstream) in the Tashiro River No. 1 Power Plant, south of the entrance and exit on the Yamanashi Prefecture side (including spring water from the No. 4 Minamikoma Tunnel just east of the Minami-Alps Tunnel), and 0.004 cubic meters per second in Tokorozawa (near the Kamazawa water source), east of the entrance and exit on the Nagano Prefecture side. The Oigawa River is also said to have a maximum average of 1.9 cubic meters per second on the Yamanashi side (Tashiro River No. 2 Power Plant, Oigawa River). Although the location of the spring is unknown, it must still be there at the present time, as the tunnel is being dug parallel to the main shaft through which trains pass, and an advanced shaft is being dug to drain the spring water, increase work space, and serve as an evacuation route once completed. Shizuoka Prefecture may want to point this out, but since the construction has been approved by other prefectures, they cannot interfere.

The amount of spring water that is expected to flow to the entrances and exits of both Yamanashi and Nagano prefectures upon completion of the Minami-Alps Tunnel is estimated to be about 0.31 cubic meters per second on average at the Yamanashi entrance and 0.01 cubic meters per second at the Nagano entrance, according to JR Tokai. According to the "Central Shinkansen (Tokyo-Nagoya City) Environmental Impact Assessment (August 2014), Yamanashi and Nagano Prefectures, 8-2-4 Water Environment - Water Resources" of the Central Japan Railway Company, the volume of spring water expected to flow to the entrances and exits of both Yamanashi and Nagano Prefectures upon completion of the Minami-Alps Tunnel is estimated to be a maximum of 0.17 cubic meters per second on average at the Kawachi River (midstream) in the Tashiro River No. 1 Power Plant, south of the Yamanashi Prefecture entrance (0.01 cubic meters per second on average at the No. 4 Power Plant, just east of the Minami-Alps Tunnel). Oigawa River) on the Yamanashi Prefecture side, and 1.9 cubic meters per second on the Tashiro River No. 2 Power Plant Oigawa River on the Yamanashi Prefecture side. According to JR Tokai, no spring water has been found during the construction of the Minami-Alps Tunnel in Yamanashi and Nagano prefectures.

The disagreement is still big. Is there a solution?

 Shizuoka Prefecture is in favor of the construction of the linear central Shinkansen itself. That being the case, JR Tokai must prepare an answer that Shizuoka Prefecture can accept regarding the impact on the Oi River. However, it is true that the amount of water flowing in the Oi River will not be known until the tunnel is actually completed. Moreover, the disagreement over the amount of water that will decrease during the construction of the tunnel has been going around in circles, and there is no prospect of a solution.

 So what should be done? I would like to propose the application of a method that has been used in real-life Shinkansen tunnels. The idea is to let the spring water in the tunnel flow from the roadbed, which is the tunnel floor, into the mountains.

 Specifically, the roadbed, which is the foundation of the railroad track, would be lined with hydraulic slag, a material that can be used to make concrete, and the concrete walls of the tunnel would be made permeable below the roadbed. The structure mentioned above was used in the first Satsuma Tunnel (0.881 km long), the second Satsuma Tunnel (0.339 km long), and the third Satsuma Tunnel (1.150 km long) of JR Kyushu between Sendai and Kagoshima Chuo on the Kyushu Shinkansen line. All three tunnels were dug below the groundwater level, which is naturally rich in spring water. In addition, since the tunnels pass through a Shirasu plateau, which is fragile to water, it was expected that particles of Shirasu soil would be spewed onto the tracks along with the spring water due to the vibration caused by the passing trains. Therefore, the spring water was allowed to seep into the roadbed to prevent it from spewing out onto the tracks.

The structure of the permeable roadbed used in the first and third Satsuma tunnels of the Kyushu Shinkansen. The spring water in the granulated slag is discharged from the tunnel to the entrance.[...]

 In the first through third Satsuma tunnels, granulated slag was spread over a width of about 8.6 meters and a thickness of about 1.6 meters. Even at this scale, it was not enough to soak up all of the spring water in the tunnel, which was discharged through the tunnel to the entrance. Therefore, the idea of treating all the spring water with granulated slag may be too far-fetched. However, since the South Alps Tunnel will have a conduit tunnel, and the amount of water flowing into the inlets and outlets at both ends will probably decrease, it may be possible to cope with this problem by increasing the thickness of the granulated slag to, for example, 3 or 5 meters, or if that is not enough, to 10 meters.

 Since granulated slag is not a very strong material, the question naturally arises as to whether it can support the railroad tracks. Therefore, I would like to propose a method of driving long piles into the roadbed in the South Alps Tunnel and building the tracks on top of them.

 This method was actually used in JR East's 2.965 km long Shirasaka Tunnel between Nasushiobara and Shin-Shirakawa on the Tohoku Shinkansen line. The tunnel's tracks were originally laid on a roadbed, but vibrations caused by passing trains caused the concrete roadbed to collapse, resulting in muddy water mixed with spring water in the tunnel overflowing onto the tracks. While the construction of a conduit tunnel was considered, the problem was solved by building a bridge from 2001 to 2005, effectively supporting the tracks with piles. For the construction, JR East drove 4756 piles into the Shirasaka Tunnel. Since the length of the Minami-Alps Tunnel is 8.4 times longer than that, nearly 40,000 piles would be required if the entire section were to be constructed.

 Naturally, JR Tokai would not like this kind of construction. However, if the amount of spring water in the Minami-Alps Tunnel or how much of the spring water flows into the Oi River is not known, I think it would be less troublesome to return the spring water to the mountain instead of trying to find out.

 Besides, if the volume of water flowing down the Oi River is lower than expected after the completion of the South Alps Tunnel, JR Tokai will have to do additional work. If this is the case, it would be more beneficial to change the structure of the roadbed of the Minami-Alps Tunnel.

 There are many problems with this idea. Not only would the construction cost increase, but the amount of soil that would have to be excavated to build the tunnel would also increase. The vast majority of the soil generated by digging the Minami-Alps Tunnel would be disposed of by building an embankment at Tsubakurosawa, about 4 km upstream from Sawarajima. The current size of the embankment is about 600 meters long, 300 meters wide, and 70 meters high, which is 60 to 70 times larger than the embankment that collapsed in a mudslide in July 2021 at Izuyama, Atami City, also in Shizuoka Prefecture. Therefore, if they dug down to the bottom of the roadbed, further expansion is certain.

 Nevertheless, the problem can be solved if Shizuoka City, where Tsubamezawa is located, and Shizuoka Prefecture strictly supervise the construction of the embankment. At the risk of sounding trite, the two parties must work together at some point to complete the Minami-Alps Tunnel.

Reference: Wen Murakami, "Cavities under Tunnel Tracks," in Wen Murakami, Osamu Murata, Shinichi Yoshino, Makoto Shimamura, Masaki Seki, Tetsuro Nishida, Yoshihiro Nishimaki, and Tetsushi Koga (eds.), Protecting from Disaster, Learning from Disaster: The Struggles of the Railway Civil Engineering Maintenance Department, Japan Railway Facilities Association, 2006. December, P216-P218)
Source: https://news.yahoo.co.jp/byline/umehara ... 5-00256462 Accessed: 2021-09-08
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The problem of reduced flow of the Oi River

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On Sept. 15, JR Tokai announced that it will hold the first meeting in Shizuoka City on Sept. 18 between its president Shin Kaneko and the chiefs of 10 cities and towns in the basin to exchange opinions on the problem of reduced flow of the Oi River due to the construction of the Central Linear Railway. "The meeting will be closed to the public for the reason that "the chiefs will be free to express their opinions. While the national and prefectural expert panels have not reached a conclusion on how to avoid the impact of the disaster, it will be interesting to see if the meeting will lead to a solution to the problem.

 The 10 cities and towns in the basin (Shimada, Yaizu, Kakegawa, Fujieda, Fukuroi, Omaezaki, Kikugawa, Makinohara, Yoshida, and Kawanemoto) had, in principle, entrusted the prefectural government to deal with the company, but the cities and towns responded to the request to create an opportunity for the company to explain directly. At the meeting, the company will answer the opinions and technical questions of the cities and towns in the basin without focusing on any particular theme. The municipalities explained that the meeting was closed to the public, saying, "JR set up the meeting and 10 cities and towns in the basin agreed to it" (Shimada City).

 In 2014, the Minister of Land, Infrastructure, Transport and Tourism asked the company to "obtain the understanding and cooperation of the local community through careful explanations to local residents and others" as a prerequisite for starting construction.


Info based on Japanese media: https://news.yahoo.co.jp/articles/b191b ... 49bc9c2335 Accessed: September 15, 2021.
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JR Tokai president meets with city majors

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リニア工事は流域の理解が前提
JR東海社長、首長らと面会

Understanding of the watershed is a prerequisite for the construction of the linear railway
2021-09-18_JR Tokai President Shin Kaneko addresses an opinion exchange meeting in Shizuoka City on the afternoon of September 18.
2021-09-18_JR Tokai President Shin Kaneko addresses an opinion exchange meeting in Shizuoka City on the afternoon of September 18.
2021-09PN2021091801000978.-.-.CI0003[1].jpg (30.04 KiB) Viewed 5706 times
Source: https://kumanichi.com/sites/default/fil ... CI0003.jpg

 JR Tokai President Shin Kaneko addresses an opinion exchange meeting in Shizuoka City on the afternoon of September 18.

 On April 18, JR Tokai President Shin Kaneko held an opinion exchange meeting in Shizuoka City with the leaders of nine cities and towns in the Oigawa River basin, including Shimada City in Shizuoka Prefecture, to discuss the construction of the Shizuoka section of the Central Linear Shinkansen. "He reiterated that he would not proceed with the construction until he had gained the understanding of the municipalities in the basin, saying, "The construction is premised on the understanding and cooperation of the people in the basin. The cities and towns in the basin are concerned about the impact of the tunnel excavation work on the flow rate of the Oi River.

 At the beginning of the meeting, President Kaneko apologized for causing concern over the water use issue. "He stressed, "Listening to you is the start. This is the first time for Mr. Kaneko to talk directly with the officials of the cities and towns along the Oigawa River. 10 cities and towns were scheduled to participate in the meeting, but Yaizu City was absent.


Info based on Kyodo News - September 18, 2010 18:10
See: https://kumanichi.com/articles/400286
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Shizuoka: changing the route?

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リニア問題 大井川流域9市町の首長とJR東海社長が初の意見交換


2021年9月18日


Summary based on Japanese Media reports: https://www3.nhk.or.jp/news/html/202109 ... 81000.html Accessed: Septemeber 19, 2021.

According to the attendees, the chiefs made a number of harsh comments about JR. President Kaneko said in an interview after the meeting, "We may have fallen short in some areas. We may not have done everything we should have done, but the concern in the basin is greater than we imagined," he said. The meeting was closed to the public. [...]

After the meeting, the mayors of the cities and towns were interviewed by reporters. Kinuyo Someya, mayor of Shimada City, said, "We asked JR to provide sufficient explanations so that the residents of the basin can feel at ease about the water use problems in the middle and lower basins and the environmental problems in the upper basin. Shohei Kitamura, mayor of Fujieda City, said at a meeting of prefectural experts after the interim report of the Ministry of Land, Infrastructure, Transport and Tourism's expert panel was finalized, "I hope JR will sincerely discuss the issue.

 President Kaneko met with Governor Heita Kawakatsu in June last year, but failed to get his consent to start construction. The 10 cities and towns in the basin have in principle unified their response to the prefectural government, but this time they agreed to an exchange of opinions with JR, which requested an opportunity to explain directly. In an interview after the meeting, President Kaneko said, "We have made a good start. We need to deepen our understanding through exchanges," said Kaneko, but Mayor Someya said only, "I don't know if there will be another meeting.

  The leaders of nine cities and towns in the Oi River revealed that they had asked President Kaneko to consider changing the route as an option and to express their concern about the large amount of earth left over from the tunnel being used to build up the river upstream.

 Motohisao Sugimoto, mayor of Makinohara City, expressed his concern about the profitability of the Linear Central Shinkansen and said, "Future Eigo (tunnel spring water) will be pumped up and returned to the Oi River. Can we really continue to do that? If you don't tell us that the project will be profitable, we won't be able to rest assured.


Summary based on Japanese Media reports: https://www3.nhk.or.jp/news/html/202109 ... 81000.html Accessed: Septemeber 19, 2021.
2021-09-19 NHK L0 Aerial view
2021-09-19 NHK L0 Aerial view
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Source: https://www3.nhk.or.jp/news/html/202109 ... _01_02.jpg Accessed: Septemeber 19, 2021.
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A change in JR Tokai's communication strategy?

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<JR東海 金子慎社長>「流域の皆様には水利用の問題を中心に大変ご心配をおかけしていることについてお詫びを申し上げます。まず皆様方のお話を聞いて、聞かせていただくことがスタートであるという風に考えています」
Übersetzung:
<I would like to apologize to the people of the Oi River basin for causing them so much concern, especially over the issue of water use. I believe that the first step is to listen. Let us hear what you have to say.

Source: https://news.yahoo.co.jp/articles/b6358 ... 10244ff34a Accessed 2021-09-20

The first meeting, which was held behind closed doors except for the beginning, was attended by JR Tokai President Shin Kaneko and nine mayors and townspeople from the Oigawa basin, including Shimada City and Kawane Honmachi. Regarding the Linear-Motorcycle Central Shinkansen, the impact of the tunnel construction on the water of the Oi River has been discussed at meetings of experts from the national and prefectural governments. However, since the prefectural government has been the single point of contact for dialogue with the 10 cities and towns in the basin, JR Tokai has not had an opportunity to directly explain the situation. In the first exchange of opinions, which lasted about an hour and a half, mayors and townspeople expressed their concerns about the impact of the project on water.

<Mayor Motohisao Sugimoto of Makinohara City said, "So-called artificial pumping up is used to return water. If it is not profitable, it will not be possible to continue. If it is not profitable, it cannot be done.

<Mayor Shohei Kitamura of Fujieda City said, "JR is focused on the construction of the linear line, so I think the audience could feel the gap between our thoughts on that. [...]

<Kinuyo Someya, Mayor of Shimada City: "I have been saying that we should have dialogue, not confrontation. [...] I don't know if there will be a next time. I believe that if there is no consensus, there will be no next step.


Info based on: Source: https://news.yahoo.co.jp/articles/b6358 ... 10244ff34a Accessed 2021-09-20
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The Minister of Land, Infrastructure, Transport and Tourism...

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Japan's Minister of Land, Infrastructure, Transport and Tourism, Mr. Akahane, urges JR Tokai to respond carefully to the start of construction of the Maglev Central Shinkansen in Shizuoka

The Minister of Land, Infrastructure, Transport and Tourism, Mr. Akahane, said that he appreciates the meeting between the head of the local government in the Oi River basin and the president of the Central Japan Railway Company. At a press conference after the cabinet meeting on September 21, the said, "I would like to positively evaluate the first frank exchange of opinions in this way. I believe it is very important to obtain the understanding and cooperation of the local community, and I will firmly instruct JR Tokai to face the local residents in good faith". He expressed his intention to continue to ask the JR Tokai company for a careful response.


Info based on Japanese media. https://www3.nhk.or.jp/news/html/202109 ... 41000.html Accessed: September 21, 2021
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Re: The Shizuoka Water & Maglev Tunnel Problem

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At a regular press conference held on September 21, Minister of Land, Infrastructure, Transport and Tourism Kazuyoshi Akahane responded to a reporter's question about the Shizuoka construction zone of the Linear Central Shinkansen being built by JR Tokai.

The Ministry of Land, Infrastructure, Transport and Tourism (MLIT) has been holding scientific and engineering discussions on the water resource issues in the Oi River basin since April 2020, and the first meeting since April will be held on September 26.

On September 18, JR Tokai President Shin Kaneko held an opinion exchange with the chiefs of the Oigawa River basin, and expressed the idea that "we will not proceed with the construction of the linear line in Shizuoka Prefecture until we have the understanding of the local governments in the basin.

Mr. Akahane said that he would like to evaluate the situation positively and stressed the importance of carefully exchanging opinions and obtaining the understanding and cooperation of the local communities, and that he would continue to instruct JR Tokai to face the local communities with sincerity.

In response to a question about whether the exchange of opinions would have any impact on future meetings of experts, he said, "I don't think there will be any crossover with the meeting of experts that we established, which is made up of academics who discuss technical and engineering issues. He indicated that he was thinking separately from the exchange of opinions.


Info based on Japanese Media reports: https://response.jp/article/2021/09/22/349702.html Accessed: September 23, 2021.
.
2021-09-23_MLX yamanashi
2021-09-23_MLX yamanashi
1672622[1].jpg (307.79 KiB) Viewed 4426 times
Photo by Junko Kimura/Getty Images/ゲッティイメージズ》9月18日、大井川利水関係協議会との意見交換で大井川流域での理解を得られるまでは静岡工区の工事を進めないと述べたJR東海の金子社長。写真はJR東海のリニアモーターカー。
Photo: https://response.jp/article/2021/09/22/349702.html Accessed: September 23, 2021.
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Experts to meet for first time in five months to discuss MLIT's linear construction (Shizuoka Prefecture)

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Experts to meet for first time in five months to discuss MLIT's linear construction (Shizuoka Prefecture)

On September 26, the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) will hold an expert meeting for the first time in about five months to discuss the water problem in the Oi River caused by the tunnel construction for the Central Linear Railway Shinkansen.

At the last meeting on April 17, a draft of the interim report was presented, stating that "according to the model analysis, the amount of water in the Oi River can be maintained if water is returned from another construction section. In response, Vice Governor Namba expressed his displeasure, saying that he was surprised that the report did not include the prefecture's argument.

On the other hand, at a press conference on the 22nd, JR Tokai President Shin Kaneko expressed his hope that the interim report will be finalized. He hoped to come up with something that will satisfy people. President Kaneko explained that the interim report is a result of the guidance and efforts from various perspectives.


English translation and summary of a Japanese report: https://news.yahoo.co.jp/articles/315e0 ... edd88ea935 Accessed September 25, 2021.
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Re: The Shizuoka Water & Maglev Tunnel Problem

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On September 26, a meeting of national experts was held for the first time in five months to discuss the water problem in the Oi River caused by the construction of the Linear-Motorcycle Shinkansen.

[...]

A number of experts on the committee commented that the most important thing is for JR Tokai to provide easy-to-understand explanations and information sharing to the local community and to gain the trust of the residents. It is expected that such expressions will be included in the draft interim report in the future.

[...]


Vice Governor Namba raised a question about JR Tokai's promise to the prefecture to return all the spring water from the tunnel to the Oi River after the excavation is completed. However, during the 10 months of digging near the prefectural border, the water cannot be returned, and 5 million tons will flow out to the Yamanashi side. It is estimated that it will take 20 years for the water to return to the Oi River.

<There are some estimates that it will take 20 years for this amount of water to return to the Oi River. Vice Governor Takashi Namba: "You said that all the water will be returned without any preconditions, so all the water will be returned during and after construction. I think that is not my understanding but the understanding of the people of the prefecture. If that explanation is disrupted, we are not in a position to have a dialogue. If they continue with that explanation, dialogue will not go any further.

<In the draft interim report, it is stated that there is no consistency with the prefectural government's proposal to return the entire amount of water, and we will consider this matter while communicating with the prefectural government and cities and towns in the basin.
 The draft interim report on the outflow of water from the prefecture states that "concrete measures should be discussed so that the prefecture and cities and towns in the basin can be convinced in the future. The expert panel hopes to finalize the interim report next time.


Summary and Translation from Japanese Media reports: https://news.yahoo.co.jp/articles/d33b7 ... 9e7c1f977e Accessed: September 27, 2021.
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Shizuoka Governor: Do not start construction!

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Shizuoka Governor Urges Prime Minister Not to Carry Out Linear Construction

On October 4, following the nomination of Liberal Democratic Party President Fumio Kishida as prime minister, Shizuoka Governor Heita Kawakatsu commented on the issue of the failure to start construction of the Shizuoka section of the Linear Central Shinkansen, saying, "I hope the government will ask JR Tokai not to start construction. With regard to measures to combat the new coronavirus, he called for "the commercialization of domestically produced vaccines and therapeutic agents as an exit strategy and the establishment of specialized facilities for infectious diseases.

In the Shizuoka construction area, the prefectural government and the construction company are facing the challenge of reducing the volume of water in the Oi River due to tunnel excavation.


https://www.nikkei.com/article/DGXZQOCC ... 1C2000000/ Accessed: October 4, 2021.
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Governor: "This is unacceptable".

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JR Tokai proposes to reduce the volume of water in the Oi River for the construction of a linear railway

Translated from Japanese Media, Nikkei.com: https://www.nikkei.com/article/DGKKZO76 ... 1C2L61000/October 7, 2021

In a press conference on October 6, Heita Kawakatsu, governor of Shizuoka Prefecture, addressed the issue of the failure to start construction of the Shizuoka section of the Linear Central Shinkansen, saying, "If we can't restore the full flow of the Oi River (due to tunnel construction), then don't do this (construction)". He stressed that JR Tokai's proposal to return the same amount of water as the spring water generated by the construction work over time after the tunnel is completed is "unacceptable".

In the case of the Shizuoka section, the prefectural government is concerned about the decrease in the volume of water in the Oi River due to the construction.


Translated from Japanese Media, Nikkei.com: https://www.nikkei.com/article/DGKKZO76 ... 1C2L61000/October 7, 2021
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Shizuoka Prefecture writes opinion on draft report of national expert panel on linear line issue

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Translated from Japanese Media reports
Source: https://www.nikkei.com/article/DGXZQOCC ... 1A0000000/ Accessed: October 19, 2021 20:01


Shizuoka Prefecture has written an opinion on the draft of an interim report by a national expert panel discussing the decline in the volume of water in the Oi River [...] .

It said that JR Tokai's plan to return the same amount of water as the spring water generated during the construction work over time after the tunnel penetration "does not correspond to the method of returning the entire amount of spring water from the tunnel to surface water, which has been discussed as a measure to avoid the impact of the construction work," and requested the government to provide guidance.

With regard to the return of all the spring water from the tunnel, the prefectural government also pointed out that "JR Tokai does not understand the importance of the project and lacks awareness and a sense of responsibility as an operator of a project that will affect water resources and the natural environment of the Southern Alps. In addition, he stressed, "It is unacceptable for the region.


Source: https://www.nikkei.com/article/DGXZQOCC ... 1A0000000/ Accessed: October 19, 2021 20:01
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Re: The Shizuoka Water & Maglev Tunnel Problem

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At a public debate held in early October, the focus of the discussion was on the issue of the linear maglev. Mr. Tatsunori Ibayashi, former incumbent of the Liberal Democratic Party (LDP), said, "The draft of the interim report was presented (at a meeting of national experts). The issues have become much clearer. I hope JR Tokai will do its best to explain the project in a way that is easy for the people in the basin to understand".

 Mr. Ibayashi, who says he needs the understanding of the local community, wants to watch the national debate. On the other hand, the two opposition parties appeal for the protection of the water of the Oi River and oppose the tunnel construction outright.

[...]

<Mr. Yuki Yamaguchi, newcomer from the Communist Party of Japan: "I think it is impossible to balance the securing of water resources and a maglev. I think it is natural to stop construction. I think it is essential to review the forecast of profitable demand, as construction will be prolonged and construction costs will increase, and a national debate is necessary.

 The maglev line project can be called a "national policy," but how to protect the water of the Oi River, which supports the lives and industries of the basin, is a major theme that will be the focus of attention in the three-way election campaign.


Summary of a Yahoo Japan Media Report https://news.yahoo.co.jp/articles/90c63 ... 1f22dd0383 Accessed: October 22, 2021
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