泥沙研究2025，Vol.50Issue(4)：59-64,44,7.DOI:10.16239/j.cnki.0468-155x.2025.04.009
黄河下游游荡段冲刷再平衡调整过程模拟与分析
Simulation and analysis on self-adjustment process from continuous erosion to rebalance in the wandering reach of the Lower Yellow River
摘要
Abstract
After the operation of Xiaolangdi Reservoir and water-sediment regulation,the phenomenon such as continuous erosion,coarsening of bed materials,and lowering of erosion efficiency,is a self-adjustment process to rebalance under new water and sediment condition in the wandering reach of the Lower Yellow River.Based on the delayed response model of the river-bed evolution,combined with the delayed response model of the sediment transport rate,a calculation method for the equilibrium volume of the river-bed deposition body is proposed and the required time equation of rebalance adjustment is derived.Taking the wandering reach from Huayuankou to Gaocun in the Lower Yellow River as an example,the self-adjustment process to rebalance during continuous erosion is simulated and analyzed.The results show that the calculated and measured values of the river-bed deposition body volume are in good agreement,both of the certainty coefficient R2 and the Nash Sutcliffe efficiency coefficient NSE are 0.98.Through multi-schemes comparison and calculation,it is considered that the average flow should be increased if the incoming sediment volume is remained static in the later water-sediment regulation of Xiaolangdi Reservoir.关键词
黄河下游/游荡段/持续冲刷/自动调整/再平衡Key words
Lower Yellow River/wandering reach/continuous erosion/self-adjustment/rebalance分类
建筑与水利引用本文复制引用
张萍,申红彬,王海周,曹兵..黄河下游游荡段冲刷再平衡调整过程模拟与分析[J].泥沙研究,2025,50(4):59-64,44,7.基金项目
水利部黄河流域水治理与水安全重点实验室(筹)研究基金资助项目(2023-SYSJJ-08) （筹）
国家自然科学基金联合基金资助项目(U22A20237) （U22A20237）
