桐城抽水蓄能电站设计洪水计算分析

Calculation and Analysis of Design Flood of Tongcheng Pumped Storage Power Station

桐城抽水蓄能电站工程所在流域内没有实测流量资料,设计洪水采用设计暴雨间接推求。对比分析唐家湾站、后冲站实测短历时降雨统计结果和安徽省暴雨等值线图查算结果,综合确定后者为工程设计暴雨成果。分别采用经验公式法和瞬时单位线法计算上、下水库设计洪水,上水库洪水由陆面和水面两部分叠加计算。将计算成果与相邻流域水文测站、水库工程洪水成果一起点绘地区综合线,经分析验证上、下水库设计洪水成果合理。

There is no measured flow data in the basin of Tongcheng pumped storage power station engineering,and the design flood is inferred indirectly by the design rainstorm.Comparative analysis of the statistical results of short-duration rainfall measured at Tangjiawan Station and Houchong Station and the results of the investigation of the rainstorm contour map in Anhui Province,and comprehensively determine the latter as the engineering design rainstorm result.Respectively using the empirical formula method and instantaneous unit line method to calculate the upper and lower reservoir design flood,the reservoir flood calculated by the superposition of two parts of the land surface and the surface of the water.Respectively using the empirical formula method and instantaneous unit method to calculate the upper and lower reservoir design flood,the reservoir flood calculated by the superposition of two parts of the land surface and the surface of the water.The calculation results are drawn together with the results of hydrological survey stations and reservoir engineering floods in neighboring river basins to draw the regional comprehensive line,and the results of the design floods of the upper and lower reservoirs are verified by analysis.