数値実験による急流河川霞堤の機能に関する一考察

抄録

A series of numerical experiments was carried out to evaluate flood control function of a discontinuous levee system which was a variety of kasumi-levees not having levee overlaps. Experimental conditions were determined based on the dimensions of Midai River levee system which was constructed before the 16^th century. The result clarified that the studied levee system of only one meter in height efficiently restricted the transverse inundation expansion up to the flood discharge of 1/30 (/year) in occurrence probability. Response of inundation expansion to levee dimension change was studied using a wide range sensitivity analysis, and the flood control strategy of those days was discussed.