国際複合災害・環境

[II-179] Drainage plan for long-term inundation caused by Nankai Trough Earthquake and Tunami

*宮川 健¹、山﨑 祐一¹、田川 隆康¹、張替 翔悟¹、久保 宜之²、新川 和之²、筧 泰昌² (1. 日本工営、2. 国土交通省)

Keywords:Nankai Trough Earthquake and Tunami, long-term inundation, 2D dimensional flow analysis, drainage analysis, drainage operation, drainage plan

We studied drainage plan in Kochi city area to eliminate long-term inundation assumed after large earthquake and Tunami. To grasp the behavior of inundation and drainage, we simulate inundation for 3 days after the earthquake and results showed that natural drainage is difficult. In drainage plan for eliminating long-term inundation, we studied route of drainage pump vehicle in consideration of road opening. To help support stuff who isn’t familiar with Kochi area, we made drainage work chart which put together route and drainage pump car placement image. Finally, to achieve early completion of drainage work, we considered the operation according to the priority evaluation between regions.