河川堤防の進行性破壊における破壊形態へ 基礎地盤および堤体地盤材料の土質が与える影響の分析

抄録

Small collapse at landside toe of levee may begin due to a rise of river water or rain, and then small collapses may be occurred in a chain reaction and reach big collapse finally. Such a progressive failure may be called internal erosion. Evaluation method for the failure of levee has not been established.

In this research, we experimented on the model test by something with different material about progressive failure.

As a result, we made it clear about the influential part of the progressive failure. It is found out difference in soil material has influence progressive failure of occurrence condition and speed.