[VI-33] Examination of Mechanical watertight gates installation under different conditions
Keywords:Subway, Destruction of the Arakawa embankment, Inundation measures, Tunnel wellhead, Mechanical water gates
According to a report by the Central Disaster Prevention Council, if the Arakawa embankment destruction caused by the flood will spread to the central Tokyo area, and it is estimated that many subway floods occur. Based on this report and the Tokyo flood hazard map, Tokyo Metro promotes the installation of a mechanical water gate at the wellhead of the tunnel to prevent the flood of the tunnel.
In this report, we introduce the cases, the wellhead of two tunnels of Chiyoda Line and Ginza Line. The installation method of the mechanical watertight gate in different conditions was examined at the wellhead of two tunnels of these.
In this report, we introduce the cases, the wellhead of two tunnels of Chiyoda Line and Ginza Line. The installation method of the mechanical watertight gate in different conditions was examined at the wellhead of two tunnels of these.
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