首都圏外郭放水路

Tokyo Metropolitan Area Outer Underground Discharge Channel(首都圏外郭放水路)

首都圏外郭放水路

Tokyo Metropolitan Area Outer Underground Discharge Channel(首都圏外郭放水路)


Tokyo is the 3600 million people’s biggest city in the World.
Therefore, Japan and Tokyo government construct many infrastructures for keeping robustness for disaster.
Metropolitan Area Outer Underground Discharge Channel is representative.
Huge tunnels passed through the rain water quickly to sea in order to prevent the flooding of land.

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