水利学报2017，Vol.48Issue(3)：279-290,12.DOI:10.13243/j.cnki.slxb.20160673
多沙河流治导线流路方程研究
Study on the regulation line flow path equation of the sandy river
摘要
Abstract
The design of the regulation line is an important content of river regulation.In this paper,a governing equation of the regulation line is established to describe the variation of the flow path in the natural state quantitatively.Based on the data of the Yellow River Model Test,it is found that the flow dynamic axis given by the maximum single width flow line of the cross section is in the form of a smooth curve with the change of curvature radius,so the sine generated curve was used to describe the flow path of the treatment planning.Through theoretical analysis,field and model data analysis,the mathematical expressions of parameters of the flow path have been established associating with the hydraulic factors of the river.The bending coefficient and bend amplitude are based on 61groups of nature and experimental data;The starting angle considering the influence of the difference between the practical discharge and the regulation discharge;The bend span considering the changes of bend strength of circulation.The regulation line flow path equation is not only suite to describe the stable form of the sandy and gravel bed rivers,but also can describe the special phenomena caused by the change of discharge in the river evolution.In addition,the method is validated by the typical braided reaches of the upper and lower reaches of the Yellow River and is applied to plan regulation line of the Inner Mongolia section of the Yellow River.关键词
河道整治/治导线/正弦派生曲线/流路方程Key words
river regime/regulation line/sine generated curve/flow path equation分类
建筑与水利引用本文复制引用
马良,张红武,马睿,刘磊..多沙河流治导线流路方程研究[J].水利学报,2017,48(3):279-290,12.基金项目
国家重点研发计划项目(2016YFC0402500) （2016YFC0402500）
