人民黄河2026，Vol.48Issue(6)：58-64,7.DOI:10.3969/j.issn.1000-1379.2026.06.009
强人工约束条件下黄河下游游荡性河道河床演变
Riverbed Evolution in the Wandering Reach of the Lower Yellow River Under Highly Artificial Constraints
摘要
Abstract
With the improvement of river regulation works and the operation of the Xiaolangdi Reservoir,the Lower Yellow River is becoming a channel under strong artificial constraints.Understanding the riverbed evolution under these conditions provides a theoretical basis for effec-tive river regulation and flood control.The wandering reach of the Lower Yellow River was the focus of this study.Based on hydrological and sediment data and cross-sectional topography from Huayuankou(1950-2022),and records of regulation project construction(1949-2019),the riverbed evolution process in the wandering reach under strong artificial constraints was investigated.The results indicate that:The in-creased density of regulation works significantly enhances the confinement of the wandering channel.The swing range of the main stream no-ticeably narrows,while the length of projects adjacent to the flow substantially increases,effectively stabilizing the main flow.Under the regu-lated flow and sediment discharges from the Xiaolangdi Reservoir,the main channel experiences continuous scouring for many years.The me-dian size of bed sediment exhibits a spatial-temporal evolution pattern,coarsening over time and fining along the course.The coefficient of sinuosity generally shows an increasing trend,altering the formerly rapid and straight characteristics of the wandering channel,imparting some traits of a meandering river.The coefficient of fluvial facies generally decreases,improving the cross-sectional form towards a narrower and deeper shape.关键词
游荡性河道/强人工约束/主流线摆动/床沙中值粒径/弯曲系数/河相系数/黄河下游Key words
wandering reach/highly artificial constraints/mainstream line oscillation/median size of bed sediment/coefficient of sinuosity/coefficient of fluvial facies/Lower Yellow River分类
建筑与水利引用本文复制引用
许琳娟,江恩慧,曹永涛,李军华,刘彦晖..强人工约束条件下黄河下游游荡性河道河床演变[J].人民黄河,2026,48(6):58-64,7.基金项目
国家自然科学基金黄河水科学研究联合基金资助项目(U2243601) （U2243601）
国家重点研发计划项目(2021YFC3200400) （2021YFC3200400）
河南省自然科学基金面上项目(242300420039) （242300420039）
河南省重大科技专项(231100320100) （231100320100）
水利部重大科技项目(SKS-2022011) （SKS-2022011）
黄河水利委员会优秀青年人才项目(HQK-202309) （HQK-202309）
