在遭遇超标准洪水以及地震等不可预见的突发事件时,将可能导致水库溃坝,若流域上下游存在梯级水库,上游水库溃坝将会对下游水库产生影响。文章以淮河流域贾鲁河水系索河支流上游的3座梯级水库为例,首先计算单个水库溃坝洪峰流量及其过程线,分析单个水库溃坝时对下游造成的影响,然后综合分析梯级水库联合溃坝时对下游的影响。 In the event of unexpected floods and earthquakes and other unforeseen emergencies, the reservoir may lead to dam failure. If there is a cascade reservoir upstream and downstream of the river basin, the upstream reservoir dam will have an impact on the downstream reservoir. Taking the three cascade reservoirs upstream of the Su River tributary of the Jiulu River in the Huaihe River Basin as an example, the paper first calculates the peak discharge and the course of the single dam dam break, and analyzes the impact on the downstream when a single dam breaks down. Then, Dam when the impact on the downstream.