過疎地域中小河川における水害時避難支援計画のための地域分析

抄録

Heavy rain disasters occurred frequently and did severe damage in Japan. In particular, hilly and mountainous area that continuing to age and depopulation is high weakness. This study is local analysis to formulate evacuation planning for heavy rain disaster in depopulated area and small river basin. The studies were conducted by paying attention to inundation depth in heavy rain disaster. Specifically, we evaluated safety of a route and shelter by expressing a road network in inundation depth. And we calculated the evacuation route that avoids a flooded area. As a result, the appropriate placement of a shelter and the house which difficulty in evacuation were shown. In addition, we calculated the evacuation time of evacuation person requiring support, and examined the announcement standards for evacuation order.