河道の保守点検のための河道脆弱区間の水理的推定法の提案

抄録

On rivers of small and middle size managed by prefectures are insufficient for river geometries and hydrological records, so maintenance and inspection of river channels can not be carried out sufficiently. In this study, we estimated weak sections by the following two hydrodynamic methods for maintenance and inspection of river channels. The first, we showed that it is possible to estimate the weak section such as a bank erosion using the deviation of effective dimensionless tractive force. The second, we extracted the characteristics of the distribution of effective dimensionless tractive force using statistics, and showed that it is possible to determine the state of high possibility of damage in the river channels.