NUMERICAL SIMULATION OF INUNDATION IN URBAN AREA OF TOKYO AND UNDERGROUND SPACE

Abstract

Recently extremely strong rain came to attack the urban areas of Tokyo. As a result, urban inundation came to be frequent. Because there are several underground spaces including subway stations in this highly urbanized area in Tokyo, appropriate measures must be taken beforehand. Numerical simulation is effective to reduce damage of the inundation. In this study, we applied numerical prediction technique developed by the first author to the Tokyo downtown area. Based on the result, the inundation risk of the actual large-scale underground was made clear.