泥沙研究2017，Vol.42Issue(2)：67-73,7.DOI:10.16239/j.cnki.0468-155x.2017.02.011
基于洪水涨冲落淤特性分析游荡性河道双岸整治对冲淤的影响
Influences of regulation by two banks on the wandering Reach of Lower Yellow River based on scouring and deposition during flood processes
齐璞 1彭红 1齐宏海 2张明武1
作者信息
- 1. 黄河水利委员会黄河水利科学研究院,河南郑州450003
- 2. 美国科进柏诚(WSP-PB)工程咨询公司,新泽西劳伦斯维尔08648
- 折叠
摘要
Abstract
Based on field data,characteristics of sediment transport and scour in the Lower Yellow River and its main tributaries,the Missouri River and the Mississippi River are analyzed.The Characteristics of sediment transport,scouring and deposition of low-sediment concentration floods and hyper-concentrated floods are as follows:although the slope becomes mild along the river,the width becomes narrow and flow velocity increa ses,which creates the boundary condition of flood and sediment balance in alluvial rivers.The bottom sediment movement is slower than that of the flood wave.This is the fundamental reason for the long-distance scour in the river channel,which is not related with the gradient of the river.Characteristics of sediment transport can be described as "more sediment supply,more sediment being transported",which is the hydrodynamic condition of scouring along the river bed.Through the regulation of both banks of the lower Yellow River,a narrow,straight and stable river channel can be formed.The role of flood for bed-forming and sediment transport will be strengthened,as well as increasing its function of bed erosion.关键词
整治宽度/窄深河槽/涨冲落淤/非恒定洪水输沙/黄河Key words
regulation width/narrow and deep channel/scour during flood rising and deposition during flood falling/unsteady sediment transport by floods/the Yellow River分类
建筑与水利引用本文复制引用
齐璞,彭红,齐宏海,张明武..基于洪水涨冲落淤特性分析游荡性河道双岸整治对冲淤的影响[J].泥沙研究,2017,42(2):67-73,7.
