论小浪底水库近期调水调沙在黄河下游河道冲刷中的作用  

Effects of water-sediment regulation by Xiaolangdi Reservoir on channel erosion in the Lower Yellow River

作　　者：陈建国[1] 周文浩[1] 孙平[1] 

机构地区：[1]中国水利水电科学研究院水利部水沙科学与江河治理重点实验室,北京100048

出　　处：《泥沙研究》2009年第3期1-7,共7页Journal of Sediment Research

基　　金：国家杰出青年科学基金项目(50725930);国家自然科学基金创新群体基金项目(50721006);中国水科院科研专项(泥集9020KY0705)

摘　　要：小浪底水利枢纽运用已经9年。2002年起,水库每年实施调水调沙,至2007年已进行7次。本文分析了这7次调水调沙在黄河下游河道冲刷中的作用,指出小浪底水库调水调沙,有利于下游河道冲刷,但只是水库拦沙初期运用造成的河道冲刷的一部分;目前对它的评价过于乐观。恰当地评价当前调水调沙的作用十分必要。Since the Xiaolangdi Reservoir was impounded in 1999, the water-sediment regulation has being adopted as one of the main operation modes of the reservoir. From 2002 through 2007,0. 3077 × 10^9t of sediment was eroded from the main channel in the Lower Yellow River by seven water-sediment regulations. Thus, the flood conveying capacity （bankfull discharge） of the river was also raised and the water level under the same discharge was dropped. All of these are of benefit to the reshaping of the withered Lower Yellow River. However, the effect of water- sediment regulation on the total erosion in the LYR was limited, but was over evaluated by some researchers. To properly evaluate the erosion efficiency by the water-sediment regulation of the Xiaolangdi Reservoir is of much significance for both the reservoir and the Lower Yellow River.

关 键 词：调水调沙 河道冲刷 冲刷效率 冲刷用水量 输沙用水量 

分 类 号：TV147[水利工程—水力学及河流动力学]