梯级水库溃坝洪水模拟

为充分利用水能资源和实现流域水资源的综合调控,我国在众多河流上进行了梯级开发,因此,对梯级水库大坝群的溃坝洪水风险开展研究具有重大意义。结合贵阳松柏山、花溪梯级水库实际工程状况,在假设梯级水库大坝出现溃坝事件时,以河道溃坝数学模型进行溃坝洪水演进模拟分析,获得上游松柏山水库溃坝、花溪水库库区及其下游风险区域的水位变化过程。结合数学模型计算成果,分析了梯级水库群不同水位组合溃坝洪水对下游的影响。

Simulation of dam-break flood for cascade reservoirs

In order to make full use of water power and achieve comprehensive water resources regulation of river basin, cascade reservoirs were built in a large number of rivers in China. The risk analysis of dam-break flood of cascade reservoirs is of great significance. In the light of Songbaishan and Huaxi cascade reservoirs in Guiyang City, under the assumption of dam-break, the flood routing process was simulated with river channel dam-break model, and the water level variations of upstream Songbaishan reservoir, Huaxi reservoir area and downstream area were obtained. Based on the model calculation results, the impacts of different water level compositions of cascade reservoirs on the downstream were analyzed.