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An Inundation Analysis Considering Water Behaviors of Subway in Urban Area

Author(s): Masataka Murase; Makoto Takeda; Koshiro Nishida; Yusuke Nakajima; Kenji Kawaike; Naoki Matsuo

Linked Author(s): Kenji Kawaike, Naoki Matsuo

Keywords: Underground space; Subway; Inundation; Dike break; Numerical analysis

Abstract: Recently, the risk and the measures of the water disaster of an underground space in urban areas has been examined. In many discussions, the heavy rain was treated as the external force of the inundation of the underground space. And a water stop plate at the gate of underground space and an evacuation system were discussed as the measures of the inundation disaster of the underground space. In generally, though the water stop plate may be effective for the measures of the inundation due to the heavy rain, it is impossible to prevent the inflow to the underground space in the case of dike break of flooding. Moreover, any urban cities have the subway network. If large scale inundation occurs, the inundation water may flow to the subway line and spread widely in the underground space. In this study, the numerical analysis model considering the water behavior of the subway network and the overland area is developed. The analysis area is Nagoya city, and it deals with the inundation due to dike break conditions. Analysis results show the features of the inundation water spread and the complex behavior of the inundation water in the subway line.


Year: 2016

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