Analysis of Index on Sediment Flushing of Density Current in Xiaolangdi reservoir and Application in 2015

被引：0
|
作者：
Gao G. [1 ,2 ]
Tan G. [1 ]
Li T. [1 ,2 ]
Wang T. [2 ]
Ren Z. [1 ,2 ]
机构：
[1] State Key Laboratory of Water Resources and Hydropower Engineering, Wuhan University, Wuhan
[2] Yellow River Institute of Hydraulic Research, YRCC, Zhengzhou
来源：
Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering | 2019年 / 27卷 / 02期
关键词：
Backwater index; Backwater length; Flushing by density current; Muddy water volume; Xiaolangdi reservoir;
D O I：
10.16058/j.issn.1005-0930.2019.02.004
中图分类号：
学科分类号：
摘要：
It plays an important role of density current operation in Xiaolangdi Reservoir during the process of water and sediment regulation of the Yellow River over the years. On the basis of previous work, in use of the surveyed data on the Xiaolangdi Reservoir during water and sediment regulation from 2004 to 2014, each backwater indicator which effect the ratio of density current flushing is studied. And the dimensionless parameters are given by combined with its physical meaning. Using multiple nonlinear fitting method, prediction formular of the density current sediment flushing ratio had been provided with water and sediment regulation period of Xiaolangdi reservoir. And density current sediment flushing ratio of 2015 in Xiaolangdi Reservoir has been predicted by the method. The results nears the surveyed data. With the calculation method of water quantity balance, an estimation of the required muddy water volume in the plunging and creeping process of density current in 2015 has been caculated the results also proved the formula prediction right. The research not only enrichs the river sediment dynamics, but also serves for the planning and design of reservoir on so diment-laden river. It has important application value and application value. © 2019, The Editorial Board of Journal of Basic Science and Engineering. All right reserved.
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页码：275 / 283
页数：8
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