怀柔水库流域24 h可能最大暴雨分析  

Analysis of 24 h possible maximum rainstorm in Huairou Reservoir Basin

作　　者：周宁 ZHOU Ning(Beijing Jing-Mi Approach Channel Management Agency,Beijing 101400,China)

机构地区：[1]北京市京密引水管理处,北京101400

出　　处：《北京水务》2023年第2期18-21,共4页Beijing Water

摘　　要：采用放大法和移置法,分别对发生在海河流域的“63·8”和“72·7”暴雨进行分析计算,推求怀柔水库流域24 h可能最大暴雨降水量。出于工程安全考虑,按照最不利原则,选取“63·8”暴雨为典型暴雨,假定折算比90%,推求的怀柔水库流域24 h可能最大暴雨降水量为773 mm,与已有相关研究成果和怀柔水库流域历史资料规律相符合,此研究成果可为怀柔水库流域防御超标准洪水提供依据,并为与其水文气候特征类似的流域可能最大暴雨估算提供参考。In this paper,the“63·8”rainstorm and“72·7”rainstorm occurring in Haihe River Basin were analyzed and calculated by using the amplification method and the displacement method,and the 24 h maximum rainstorm in Huairou Reservoir Basin was deduced.From the perspective of engineering safety,according to the most unfavorable principle,we choose“63·8”rainstorm as the result of the typical rainstorm.The conversion ratio is 90%.The maximum possible rainstorm of 24 h in Huairou Reservoir Basin is 773 mm.The rational analysis of economic cooperation is consistent with the historical data of the basin and the relevant research results,which can provide a basis for the Huairou Reservoir watershed to prevent the excess flood,and provide a reference for the estimation of the maximum possible rainstorm in the basin with similar hydrological and climatic characteristics.

关 键 词：怀柔水库流域 PMP 放大法 移置法 

分 类 号：TV125[水利工程—水文学及水资源]