連続水制を有する急流石礫河道札内川の洪水時の流れ・土砂動態に関する研究
キーワード:
Stony-bed river,
spur dikes,
sediment transport,
grain size distribution,
two-dimensional bed variation model
2011 年 17 巻 p. 149-154
詳細
2011 年 17 巻 p. 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.
