河海大学学报（自然科学版）2026，Vol.54Issue(3)：70-77,8.DOI:10.3876/j.issn.1000-1980.2026.03.009
梯级水库拦沙条件下水库排沙比公式修正
Correction of sediment discharge ratio formula for cascade reservoirs under sediment interception conditions
摘要
Abstract
To address the problem of low accuracy in empirical sediment discharge ratio formulas caused by the continuous decline in effective reservoir capacity and significant changes in inflow water and sediment conditions during long-term operation of cascade reservoirs,the inflow water and sediment processes in the cascade reservoirs of the lower reaches of the Jinsha River over the next 100 years were designed.The sediment discharge ratios of the cascade reservoirs were calculated using both a one-dimensional water-sediment model and the Siyami empirical formula for sediment discharge ratio.The quantitative relationship between the results obtained by the two methods was analyzed,and the Siyami empirical formula for sediment discharge ratio was subsequently corrected.The results show that the sediment discharge ratio calculated by the one-dimensional water-sediment model exhibits greater volatility than that calculated by the Siyami empirical formula.Moreover,as the operation time of the cascade reservoirs increases,the growth rate of the sediment discharge ratio calculated by the one-dimensional water-sediment model is significantly higher than that calculated by the Siyami empirical formula.The coefficient of determination of the corrected Siyami empirical formula for the Wudongde,Baihetan,Xiluodu,and Xiangjiaba reservoirs is 0.95,0.96,0.87,and 0.86,respectively,indicating that the corrected formula has high accuracy.关键词
金沙江下游梯级水库/泥沙数学模型/水库排沙比/经验公式修正Key words
cascade reservoir of the lower reaches of the Jinsha River/mathematical model of sediment/sediment discharge ratio of reservoir/empirical formula correction引用本文复制引用
张国帅,金中武,李志晶,陈鹏,周其航..梯级水库拦沙条件下水库排沙比公式修正[J].河海大学学报（自然科学版）,2026,54(3):70-77,8.基金项目
中央公益性科研院所基本科研业务费专项资金项目(CKSF2026340/HL) （CKSF2026340/HL）
国家自然科学基金项目(52595702,52479058) （52595702,52479058）
