黄河干流泥沙分布状况及存在问题

Analysis of sediment load distribution in Yellow River

利用实测资料系统分析了1950.7-2005.6不同时期黄河干流泥沙分布特点。通过上游宁蒙河段河道冲淤量、主槽平滩流量,中游龙潼河段河道冲淤量、潼关高程、三门峡水库拦沙量、小浪底水库拦沙量,下游主槽冲淤量、滩地冲淤量、主槽平滩流量、二级悬河状况、以及出口断面沙量等参数的变化,综合分析了不同时期不同来水来沙条件下,黄河干流泥沙分布引起的问题。提出了有利于减轻黄河干流泥沙淤积灾害的建议。

The characteristics of sediment load distribution in the Yellow River are studied based on field data.Indexes including the amount of erosion /deposition,bankfull discharge,Tongguan elevation,volume of the key reservoirs,secondary perched channel,sediment load at Lijing station,etc.are selected to analyse the characteristics of the sediment load distribution.Proposals for mitigating the sediment deposition disaster are put forward.