泥沙研究2017，Vol.42Issue(5)：25-30,6.DOI:10.16239/j.cnki.0468-155x.2017.05.005
黄河下游高含沙洪水河床形态及调控指标
Regulation indices of hyperconcentrated floods in the Lower Yellow River
摘要
Abstract
Regulation of hyperconcentrated floods by reservoir is an important approach to maintain health of main channel in the Lower Yellow River (LYR).Based on analysis of hyperconcentrated floods in the LYR,the floods are classified into 3 types,and classification regulation idea and indices are proposed in this paper.For large overbank floods,peak discharge in the LYR should be controlled as 1.5 times of bankfull discharge,incoming sediment coefficient should be controlled in range of 0.012-0.04.As to ordinary hyperconcentrated floods,the discharge should be kept close to bankfull discharge,and incoming sediment coefficient should be around threshold value for erosion and deposition.For lower hyperconcentrated floods,the discharge should be controlled less than 2500m3/s,and sediment load should be less than 0.2 billion t.After the classified regulation,broad floodplain in the LYR and main channel volume upstream from Huayuankou station can be used well to store sediment.As a result,main channel conveyance capacity will be best to transport incoming sediment,and the flow conveyance capacity of main channel in the LYR will be increased.关键词
黄河下游/高含沙洪水/主槽/滩地/调控指标Key words
the Lower Yellow River/hyperconcentrated flood/main channel/floodplain/regulating index分类
建筑与水利引用本文复制引用
张原锋,申冠卿..黄河下游高含沙洪水河床形态及调控指标[J].泥沙研究,2017,42(5):25-30,6.基金项目
国家自然科学基金项目(51379087) （51379087）
