【摘要】 以青海省海西州格尔木河大干沟水电站为例,研讨了受上游水库调蓄影响时设计洪水的计算方法。根据水电站上游洪水的地区组成,采用同频率地区组成法定量分析了温泉水库对大干沟水电站洪水的消减作用,推荐选用最不利组合方案"以区间来水为主、上游水库相应的洪水组合"作为设计洪水成果,200年一遇洪水时温泉水库对大干沟水电站的削峰率为19%。计算方法可为大干沟水电站及青海省受水库调蓄影响的流域设计洪水提供参考。更多还原

【Abstract】 Taking the Dagangou Reservoir on the Geermu River in Qinghai Province as an example,this paper discussed how to calculate the design flood under the influence of the upstream reservoir filling.According to the upstream flood area composition of the hydropower station,the flood mitigation effect of the Wenquan Reservoir on the Dagangou Hydropower Station was quantitatively analyzed by using the method of local composition wth the same frequency.It is recommended to choose the most unfavorable combination scheme, "the flood combination mainly consisting of intermediate inflow and corresponding flood combination of upstream reservoir" as the result of design flood.According the calculation result,The peak cutting rate of the Wenquan Reservoir to the Dagangou Hydropower Station is 19%.The calculation method can provide a reference for the flood calculation in the similar basins of Qinghai province affected by reservoir storage.更多还原