Linear Chuo Shinkansen filed for suspension of construction work in Shizuoka Prefecture October 30 4:07

While Shizuoka Prefecture was concerned about the impact on water resources over the Linear Chuo Shinkansen and did not approve the tunnel construction of JR Central and it became difficult to open in 2027, tea farmers in Shizuoka Prefecture said, "Impacts such as a decrease in the amount of water. On the 30th, we will file a lawsuit seeking an injunction against the construction work.

The Linear Chuo Shinkansen is planned to be constructed underground in the Southern Alps in Shizuoka Prefecture, but Shizuoka Prefecture, which is concerned about the impact on the water resources and ecosystem of the Oi River basin, did not approve the start of construction of JR Central, and it will open in 2027. It's getting harder.

Meanwhile, 106 people, including tea farmers in the Oi River basin, filed a lawsuit in the Shizuoka District Court on the 30th requesting JR Central to suspend construction work in Shizuoka Prefecture.

Tea farmers are complaining, "The construction may have an impact such as reducing the amount of water. If that happens, it is an emergency that threatens our lives from the ground up."

Toshifumi Shibamoto, one of the plaintiffs and a tea farmer, said, "The water of the Oi River is indispensable to our daily lives, and it is painful to have a hole in the Southern Alps due to construction work. I'm talking.

Regarding the Linear Chuo Shinkansen, trials have been filed in Yamanashi and Tokyo asking JR Central and the government to suspend construction and revoke approval.

JR Tokai "I want to dispel local concerns"

Regarding the impact on the flow rate of the Oi River, JR Tokai has shown that the flow rate of the river will decrease by a maximum of 2 tons per second unless special measures are taken, and the water that flows out will flow out into the tunnel. It is supposed to be sucked up by a pump and returned to the Oi River.

In addition, regarding the impact on groundwater, which Shizuoka Prefecture is concerned about, JR Tokai said at a national expert meeting held on the 27th of this month that even if tunnel construction was carried out, the groundwater level would drop in the upstream area. Since the source of groundwater in the middle and lower reaches is not the groundwater in the upper reaches, "If the spring water generated by the tunnel construction is returned to the river, the impact will be extremely small."

JR Tokai President Shin Kaneko said at a press conference on the interim financial results held on the 28th, "It is important to eliminate the concerns of the local people. The biggest concern is whether water can be used properly. Therefore, I would like to confirm and explain what is necessary for the concerns, "he emphasized the idea of ​​dispelling the concerns of the region while carefully explaining to the cities and towns in the basin.

Background of water

The Linear Chuo Shinkansen is aiming to open between Shinagawa and Nagoya in 2027, but the construction of the 8.9 km construction area in Shizuoka Prefecture has not started, making it difficult to open as planned.

Shizuoka Prefecture does not allow the start of construction due to concerns about the impact on the Oi River, a first-class river that originates in the Southern Alps where tunnel construction is carried out.

In the basin of the Oi River, it is used as domestic water for about 620,000 people.

In addition, Shizuoka Prefecture has the highest production of tea in Japan, but the tea fields that support about 50% of it are concentrated in the Oi River basin.

JR Tokai estimates that water will flow into the tunnel due to tunnel construction, and if no special measures are taken, the flow rate of the river will decrease by a maximum of 2 tons per second, and the water that flows out will be pumped up and returned to the Oi River. Shows the policy.

On the other hand, Shizuoka Prefecture has a period of construction in which the entire amount cannot be returned, and there is a risk that water will flow out of the prefecture, and there are concerns about the impact on the amount and quality of groundwater in the middle and lower reaches. , The talks are in a stalemate.

In April, an expert meeting was set up under the leadership of the Ministry of Land, Infrastructure, Transport and Tourism to resolve the situation, but discussions are still ongoing over the impact of construction on water resources.