黄河典型冲积性河道输沙能力影响因素分析  

Analysis on the Influencing Factors of Sediment Transport Capability of the Typical Alluvial Reaches of the Yellow River

作　　者：郑艳爽[1] 刘树君 彭红[1] 李萍[1] 

机构地区：[1]黄河水利科学研究院水利部黄河泥沙重点实验室,河南郑州450003 [2]小浪底水利枢纽建设管理局,河南郑州450000

出　　处：《人民黄河》2012年第10期34-36,共3页Yellow River

基　　金：国家"973"计划项目(2011CB403305)

摘　　要：以水力学、河床演变学、河流泥沙动力学等理论为指导,对黄河典型冲积性河道输沙能力的影响因素进行了研究。结果表明:较弱的水流动力条件是宁蒙河道输沙能力比较弱的主要原因;窄深的断面形态和高含沙洪水决定着渭河下游河道具有极强的输沙能力;黄河下游河道输沙能力较大的原因是该河道具有较强的水流动力条件;小北干流河道尽管水动力条件也较强,但是泥沙粒径较大导致了河道输沙能力降低。According to the principles of hydraulics, fluvial processes study and river sediment dynamics, the mechanism of different capabilities of sediment transport of typical alluvial reaches in the Yellow River were discussed. The results show that ： the main reason of low sediment transport capability in NingMeng reach is weak hydrodynamic power, the narrow and deep cross＊section and high sediment flow determine the high sediment transport capability in the lower Weihe River, in the lower Yellow River the strong hydrodynamic power is the most important factor conducing the high sediment transport capability, for the Xiaobeiganliu reach though the hydro-dynamic power is strong, the bigger particle size of suspended sediments reduces the sediment transport capability.

关 键 词：泥沙粒径 水沙条件 输沙能力 冲积性河道 黄河 

分 类 号：P333[天文地球—水文科学] TV882.1[水利工程—水文学及水资源]