寒冷地区取水工程可能最小径流问题的分析研究

A study on the Probable Minimum Run of Problem of the Water Diversion Project in the Cold Area

从核电站水文工作的需要出发，探讨了可能最小径流的含义和主要影响因素，提出了水库取水情况下的“月流量组合分析法”等计算可能最小年流量的计算方法和河道取水情况下的“流量分割法”等计算可能最小流量的计算方法，分析了冰期最小流量与最低水位的不一致性和形成原因，说明了寒冷地区河道取水工程的设计低水位需在年内不同时期低水位分析计算基础上，结合水浸冰厚的影响，才能综合分析确定。

Accordingtotheneedofhydrologicalworkofnuclearpowerstation,explorationhasbeendoneorthemeaningandmainefectelementsoftheprobableminimumrunof,andcomputingmethodhasbeenputforwardsuchascombinedanalysismethodofmonthlydischargefortheprobableminimumannualdischargecalculationundertheconditionofgetingwaterfromthereservoirandDischargeSeparationMethodfortheprobableminimumdischargecalculationundertheconditionofgetingwaterfromtheriver.Theincompatibilitybetweentheminimumdischargeandthelowestwaterlevelduringthefreezingperiodandformulatingreasonhavebenanalyzed,itisclarifiedthatthedesignedlowwaterlevelofthewaterdiversionprojectinthecoldareashouldbedeterminedonthebasisofcomprehensiveanalysisandcalculationofthelowwaterlevelindiferentannualperiodwiththeefectofwaterloggdeicedepth.