河道整治工程对游荡型河道断面形态的影响  

Influence of river regulation works on the section shape of wandering reach

作　　者：许琳娟[1] 王森森 李军华[1] 赵万杰 李名扬 XU Linjuan;WANG Sensen;LI Junhua;ZHAO Wanjie;LI Mingyang(Key Laboratory of Lower Yellow River Channel and Estuary Regulation,MWR,Yellow River Institute of Hydraulic Research,YRCC,Zhengzhou 450003,China;College of Water Conservancy Science and Engineering,Zhengzhou University,Zhengzhou 450001,China;College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]黄河水利科学研究院水利部黄河下游河道与河口治理重点实验室,郑州450003 [2]郑州大学水利科学与工程学院,郑州450001 [3]河海大学水利水电学院,南京210098

出　　处：《南水北调与水利科技（中英文）》2022年第1期201-208,共8页South-to-North Water Transfers and Water Science & Technology

基　　金：国家自然科学基金项目(42041004;42041006);中央级公益性科研院所基本科研业务费项目(HKY-JBYW-2018-03;HKY-JBYW-2020-15)。

摘　　要：基于1960—2014年黄河下游游荡型河道整治工程修建情况和实测流量及断面地形资料,分析各时期工程密度和在同流量条件下断面形态(河宽、水深、河相系数)的变化情况,结果表明:黄河下游游荡型河道整治工程的修建有效改善了河道断面形态,在河道整治工程密度较小时不能有效控制河势,整治工程对河道断面形态影响较小;随着河道整治工程密度的增大,在同流量条件下河宽减小,水深增大,河相系数减小,河道断面形态向窄深方向发展,可见河道整治工程在达到一定密度时对河道断面形态有明显的改善作用,在一定程度上限制河段的游荡特性,起到了稳定主流、控制河势的作用。The river channel of wandering type is wide and shallow;the water flow is scattered,the mainstream migrates uncertainly,the river regime changes violently,which is extremely unfavorable to flood control.In order to ensure the flood control safety on both banks of the lower Yellow River,the control and guide project was built in the curved section of the lower Yellow River as early as in 1950s,and gradually extended to the transition section,and finally successfully renovated in the wandering section.In recent years,with the continuous construction of the wandering channel regulation project in the lower Yellow River and the change of water and sand situation,the cross-section shape of the river has changed greatly.It is momentous to study the influence of river regulation projects on the shape of wandering channels,especially the relationship between engineering density and shape parameters of the river sections.Based on the construction process,measured discharge,and section topographic data of the river regulation project of the wandering river in the lower Yellow River from 1960 to 2014,the length and density of the river regulation project in different periods are calculated,and the relationship between the engineering density and the morphological indexes(width,depth and river phase coefficient)of each section in each period is established under the condition of the same discharge.The influence of river regulation projects in different periods on the evolution of river section morphology is analyzed.The results show that the density of the regulation project of the wandering reach of the lower Yellow River increases year by year,and now the density of the regulation project has reached over 70%.When the density of the regulation works is small,the wandering characteristics of the river reach are not completely controlled,and the width of the river varies greatly under the same discharge;after the river remediation,especially in the river section with complete engineering construction and high engineering den

关 键 词：河道整治工程 工程密度 断面形态 河道宽度 水深 河相系数 

分 类 号：TV147[水利工程—水力学及河流动力学]