岩露出河川の土砂流出特性に関する流域模型を用いた実験的研究

抄録

In this research, we conducted laboratory experiments using a basin model and artificial rainfall equipment and the characteristic of sediment discharge time duration were considered. An experiment using a basin model and rainfall equipment was made and the special quality of the change was considered time of the sediment yield by this research. Experiments results are as follows. Seeing small rainfall intensity condition, large sediment discharge happened and clear peak sediment discharge showed in the case setting sediment on one main river, comparing to the case setting sediment on multiple branch streams. Seeing large rainfall intensity condition, clear peak sediment discharge showed in the case setting sediment on multiple branch streams and also in the main stream case. From experiment results, we found that the sediment yield location and volume relating to sediment discharge runoff were influenced by rainfall intensity.