昭和58年7月豪雨による三隅川の河川構造物災害とその実験的検討

Abstract

From the 20th to 23rd in July 1983, heavy rainfall attacked the large area in San-in Districtsand the flood with vast discharge was generated in the Misumi River. The level of flood waterreached about 2 meters beyond the top of embankments and the whole fluvial areas were flooded.Everything on the area - embankment, river-walls, bridges, agricultural plains, houses etc. -were destroyed or were given serious damages.The authors surveyed the river basin after the flood and examined the aerial photographsto find out some features with which river constructions were destroyed. They also conductedsome experiments to confirm them. In this paper, the results of the survey and the experimentsare described.