土砂環境の変化に対応した洪水流と河床変動予測技術−実務上の課題と調査・研究の方向性

抄録

The proper management of river bed variation and bed materials is important for conducting the flood control and maintaining environment of the river. It becomes further important on the investigation of adaptation measures of the flood control due to the global climate change in the future. The present bed variation analysis is performed under the assumption that the river bed height measured after the large flood is almost the same as river bed heights occurring during the flood.

The bed variation analysis using unlikely bed height data brings many problems in the practical management of rivers. The present paper mainly focuses on bed variation analysis and bed material size distribution to discuss what the present issues in the sediment transport are and how the issues be solved from engineering point of views.