下流河床の低下に伴う床止めの破壊の過程のフォルトツリー構築の試み

抄録

Estimating structural soundness of groundsills based on their destruction processes under river bed degradation is an urgent problem in river management. In this paper, we conducted case study analysis and hydraulic experiments to reveal elementary events. Next, we describe the order of destruction mechanism. Then, fault tree analysis is applied for destruction processes of groundsills. The present result suggested practicability of fault tree analysis for river management work, and several elementary events of destruction processes that required further research.