2011 Volume 17 Pages 149-154
To clarify flow and sediment transport during a flood is important to design a stable longitudinal and cross-sectional form in the Satsunai River with spur dikes. The authors have developed a new two-dimensional model for estimation of bed variation and grain size distribution by considering the mechanism of sediment transport and characteristics of bed surface irregularity in stony bed rivers. In this study, we applied this model and the conventional model to 2001 flood for evaluation of flow, bed variation and grain size distribution in the Satsunai River. The authors’ model is capable of explaining bed variation and grain size distribution around the spur dikes.
