黄河干流河道输水量与输沙量关系研究

在系统回顾已有河道输水输沙特性研究成果的基础上，从张瑞瑾水流挟沙力公式入手，引入来流含沙量的概念，推导出河道输水量与输沙量关系式。采用实测资料分析，分别得到了黄河干流河道兰州至利津站不同河段输水量与输沙量关系式，相关关系较好。黄河干流各河段输水量与输沙量关系特点的分析表明：兰州-石嘴山和潼关-利津河段受大型水利枢纽运行影响较大，石嘴山-头道拐与头道拐-潼关河段分别受比降变化和支流入汇影响较大；随着河道水流含沙量的增大，输水量对输沙量的影响逐渐减小。

Study on relationship of water delivery and suspended-sediment discharge in the main channels of the Yellow River

Based on comprehensive review of the research on water and sediment transport characters, with the definition of suspended load concentration of inflow introduced, relational expression of water delivery and suspended-sediment discharge was derived from ZHANG Rui-jin stream sediment carrying capacity formula. Water delivery and suspended-sediment discharge relational expressions with good interrelationships of different channels of the main Yellow River from Lanzhou to Lijin were induced by carrying out multivariate regressions of the observed data. Analyses of the relations characters show that water delivery and suspended-sediment discharge relations of Lanzhou-Shizuishan and Tongguan-Lijin reaches were affected by the running of big hydro-junctions, while those of Shizuishan-Toudaoguai and Toudaoguai-Tongguan reaches were resulted from the change of slop and the incoming of branches respectively, and the contributions to suspended-sediment discharge by water delivery become less with the increase of suspended load concentration.