黄河下游河道冲淤平衡时输沙水量变化规律研究  

Study on the Change Law of Sediment-Transport Water Volume in the Lower Yellow River during the Silt Stable Period

作　　者：袁吉栋[1] 邢红芳[2] 李彦军[1] 王方勇[1] 

机构地区：[1]河北工程大学水电学院,邯郸056021 [2]水利部海委漳卫南岳城水库管理局,河北邯郸056001

出　　处：《水力发电》2009年第7期14-16,共3页Water Power

基　　金：国家自然科学基金资助项目(40501011)

摘　　要：根据1950～2000年黄河下游河道汛期实测径流量和输沙量资料,计算得到了花园口—高村和艾山—利津河段处于冲淤平衡状态时的输沙量、输沙水量与单位输沙水量,并分析了三者之间的关系。研究表明:河段处于冲淤平衡状态时,输沙水量随着输沙量的增大而增大,单位输沙水量随着输沙量、输沙水量的增大而减小,输沙效率增大;随着河槽形态趋于窄深,一定输沙量所需输沙水量减小,单位输沙水量减小,输沙效率提高。According the measured data of runoff and sediment volume from 1950 to 2000 in the lower reach of the Yellow River during flood season, this paper calculates the sediment-transport volume, the sediment-transport water volume and the unit sediment-transport water volume in the Huayuankou-Gaocun and Aishan-Lijin river reaches during silt stable period and analyzes the relation among them. The results indicates that under the silt stable state, the sediment-transport water volume increases with the sediment-transport volume increases,the unit sediment-transport water volume decreases with the sediment-transport water volume and the sediment-transport volume increases, at the same time the efficiency of the sediment-transport increases. With the section shape becomes narrower and deeper, the unit sediment-transport water volume decreases and the efficiency of the sediment-transport increases.

关 键 词：输沙水量 单位输沙水量 冲淤平衡 断面形态 输沙效率 黄河下游 

分 类 号：TV143[水利工程—水力学及河流动力学]