摘要
结合历年黄河下游小浪底、花园口站水沙过程实测资料,重点分析了历史上"04.8"、"05.7"、"06.8"、"07.7"、"08.7"、"10.7"几场洪峰增值典型洪水的演进特征,总结了小浪底水库异重流排沙期高含沙洪水在黄河下游演进过程出现洪峰增值的内在特性。结果表明,减小异重流排沙前期基流条件和减缓出库含沙量的变化梯度,黄河下游河道的洪峰增值量将会得到明显减小。黄河下游洪峰增值最大增值发生在花园口站附近或其上游河段,花园口以下未再发生洪峰增值现象。
Combining the measured data of water and sediment processes of past years in the lower Yellow River of Xiaolangdi and Huayuankou Station ,we focus on the analysis of several different levels of typically flood peak value of the evolution of features ,e . g .flood of “04 .8” ,“05 .7” ,“06 .8” ,“07 .7” ,“08 .7”and“10 .7” .The Xiaolangdi Reservoir sediment density flow of hyperconcen‐trated Yellow River flood in the evolution of the inherent characteristics of the peak value is summarized .The inherent characteristics of hyperconcentrated flood are summarized when the peak value occurs in the period of evolution .The results show that reducing the base flow conditions of preliminary density flow and mitigation of sediment concentration gradient ,the peak value of the Yellow Riv‐er will be significantly decline .Yellow River flood peak value or the maximum value occurs in the upper reaches of the Huayuankou Station ,the phenomenon of peak value has not happened again in the lower reach of Huayuankou Station .
出处
《中国农村水利水电》
北大核心
2015年第4期113-115,119,共4页
China Rural Water and Hydropower
基金
国家自然科学基金项目(51379086
51209101)
"十二五"国家科技支撑计划项目(2012BAB02B00)
关键词
黄河
洪峰增值
异重流
基流
含沙量
Yellow River
flood peak increase
density flow
base flow
sediment concentration
