破堤時の締切で投入するブロックの流失を防止するための鋼組工に関する試行模型実験

抄録

When dyke breaks, blocks are thrown into flood water to shutoff there temporarily. But as blocks roll down easily in the water flow, it is difficult to shut off there rapidly by blocks for flood prevention. We propose a method made of steel materials to trap a rolling block on bed. It is easy to frame and drop into water, and not easy to washout in intense flow at dyke break. The paper describes the results of trial hydraulic experiments on three situations, dropping one unit into flow, catching a rolling down block and integral state of block and the steel method. The experiments show that the steel structure is effective measure to trap a rolling block in flood condition.