抄録
The purpose of this study is to clarify the influence of woody riverine-plants on stream flow and bed-load rate. Characteristics of flow and bed-load rate were investigated based on results of flume experiments conducted by the authors. In the experiments, two types of model plant were used. One was a shrub-type, imitating bush trees such as pussy willows, and the other, a tree-type consisting of stem and crown parts. Verification of model parameters included in a one-dimensional k-ε turbulent flow model was perfomed using velocity measurements taken in the experiments. This model was applied to the estimation of effective tractive-stress of bed-load rate. The relationship between measured bed-load rates and estimated effective tractive-forces was represented well using Ashida-Michiue's bed-load formula.
