对黄河中游皇甫川2006年7月27日出现的洪峰流量1650m3/s、含沙量1110kg/m3的中常洪水进行了分析,认为该次洪水的形成原因,一是暴雨中心在上游治理程度较低的砒砂岩地区,二是沟道有较多泥沙使洪水期出现“揭河底”冲刷。同时指出,这种高含沙洪水在皇甫川流域出现的几率仍然较大。 The flood of medium flood of Huangfuchuan, a middle reaches of the Yellow River, on July 27, 2006 with a peak discharge of 1650m3 / s and a sediment concentration of 1110kg / m3 was analyzed. The reasons for the flood were as follows: first, Of the 砒 sandstone areas, and second, there is more sediment in the channel so that floods occur at the end of the flood. At the same time, it is pointed out that there is still a high probability that this high-silt flood will appear in Huangfuchuan watershed.