黄河下游游荡性河段河弯发育与来水来沙的关系  

Development of meanders under varying water and sediment load conditions in the Lower Yellow River

作　　者：周静[1] 王兆印[1] 李昌志[2] 刘继祥 

机构地区：[1]清华大学,北京100084 [2]中国水利水电科学研究院,北京100038 [3]黄委会设计院,河南郑州450003

出　　处：《泥沙研究》2006年第1期45-50,共6页Journal of Sediment Research

基　　金：科技部国际合作重点项目(2004CB720402);国家自然科学基金群体创新项目(50221903-3)

摘　　要：黄河下游游荡性河道中河弯的运动与变形反映了河道的平面河势演变。研究表明,河弯的运动和变形与上游来水来沙之间存在密切的关系。本文采用相关分析方法讨论了黄河下游铁谢至高村河段中受工程控制较小、运动较为自由的河弯随水沙变化而演变的趋势以及与河弯演变相关性最好的累积水沙作用时间;分析了各年年径流量的权重变化对多年径流量与河弯特征的相关性的影响和河弯跨度与水沙之间的函数关系。研究成果对预测黄河下游河势演变趋势、科学调度小浪底水库以满足下游河势的要求具有一定的参考意义。The Tiexie-Gaocun reach is a typical wandering reach in the Lower Yellow River. There are many meanders in the reach. The evolution of the meanders is closely related to incoming water and sediment load. By using correlation analysis, this paper presents studies on the relationship between the geometric characteristics of the meanders and water and sediment load, the effect of the weight of individual annual runoff on the correlation between the multiple-year runoff and the geometric characteristics of meanders, and the function between the geometric span of meanders and water and sediment load. These results could be a reference for the operation scheme of Xiaolangdi reservoir and the fluvial processes of the Lower Yellow River.

关 键 词：河弯特征 河床惯性 相关关系 年径流量 年来沙量 

分 类 号：TV147[水利工程—水力学及河流动力学]