河幅及び断面形状を考慮した掃流砂量式を用いた河床変動解析－石狩川河口部昭和56年8月洪水を例として－
キーワード:
fukuoka’s sediment transport formula,
bed variation analysis,
fukuoka’s equation,
river mouth
2011 年 17 巻 p. 119-124
詳細
2011 年 17 巻 p. 119-124
Many of the sediment transport formulas cannot estimate well the amount of sediment discharge rate in rivers. Fukuoka (2010) derived the sediment transport formula considering the effect of river width and cross-sectional form using field observed data by the dimensional analysis. In this study, we develop a bed variation analysis to 1981 flood of the Ishikari River mouth and we apply Fukuoka’s sediment transport formula to the analysis. We compare the results of the analysis by the sediment transport formula of Fukuoka and the previous formulas. As a result, in the case of the Ishikari River mouth, Fukuoka’s formula improves the accuracy of reproducibility of cross-sectional bed forms at meandering channel compared with the previous sediment transport formulas.
