水利学报2025，Vol.56Issue(8)：1037-1048,12.DOI:10.13243/j.cnki.slxb.20240347
黄河下游输沙需水量模拟预测研究
Simulation and prediction of water demand for sediment transport in the lower Yellow River
摘要
Abstract
Reasonable prediction of water demand for sediment transport in the lower reaches of the Yellow River is crucial for optimizing water-sediment regulation,ensuring flood control safety,and enhancing the effectiveness of river channel management.This study introduces a non-equilibrium sediment transport equation incorporating the average sediment concentration distribution coefficient a*and the unsaturated coefficient fs to calculate the variation in sediment concentration along the river course.A numerical model of channel erosion and deposition is constructed,with the integrated riverbed stability index serving as a constraint for river regulation projects.The model is validated using measured water and sediment data from the lower Yellow River.By simulating 10 scenarios with different water and sediment conditions,the study finds a positive correlation between sediment transport water demand and sedi-ment inflow.When the sediment inflow exceeds 500 million t,the growth in water demand tends to slow down.Fur-thermore,an increase in the degree of river regulation effectively reduces the sediment transport water demand.For instance,when the integrated riverbed stability index Zw increases from 4 to 4.5,the required water volume for the same sediment inflow can be reduced by approximately 10％.Further simulation predictions suggest that when the annual sediment transport volume in the lower reaches of the Yellow River is between 200 and 300 million t,the cor-responding water demand ranges from 10 to 15.5 billion m3,and the current water resource allocation is generally suf-ficient to meet sediment transport needs.The findings of this study provide a scientific basis for water-sediment regu-lation and river channel management in the lower Yellow River and offer valuable insights into water-sediment regula-tion in high-sediment rivers.关键词
输沙需水量/黄河下游/河床综合稳定性指标/数值模型/推移质输沙Key words
water demand for sediment transportation/lower reaches of the Yellow River/integrated riverbed stabil-ity index/numerical model/bedload transport分类
建筑与水利引用本文复制引用
李琳琪,张红武,傅旭东,侯琳,郭庆超,黄海..黄河下游输沙需水量模拟预测研究[J].水利学报,2025,56(8):1037-1048,12.基金项目
内蒙古自治区财政重大专项(2024JBGS0016) （2024JBGS0016）
水利部重大科技项目(SKR-2022055) （SKR-2022055）
国家自然科学基金面上项目(52379083) （52379083）
