设计洪水计算中洪水系列的选用  

Selection of Flood Series in Design Flood Calculation

作　　者：胡笑妍[1] 王宝玉[2] 

机构地区：[1]河海大学水文水资源学院,江苏南京210098 [2]黄河勘测规划设计有限公司,河南郑州450003

出　　处：《水电能源科学》2013年第6期95-98,共4页Water Resources and Power

摘　　要：调查历史洪水、考证历史文献和洪水系列的插补延长是提高洪水系列代表性的重要手段,但历史洪水数值精度比实测洪水低,为确保设计洪水计算的合理性,分析了推算历史洪水的洪峰流量常用的率定曲线(水位—流量关系)外延法、比降法、水面线法、控制断面法四种方法,并分别介绍了考虑历史洪水的长、短系列实测洪水洪峰流量的计算公式,以工程实例论证了对设计洪水的影响,研讨了实际工程计算设计洪水时洪水系列的合理选用。The investigation of historical flood and the verification of historical documents as well as the extension of flood series are important means of improving the representativeness of flood series data.However,the historical flood data has lower accuracy than measured flood series data.In order to ensure the rationality of design flood,four methods that usually used to calculate history flood peak discharge,such as extending the water level-flow curve method,gradient method,water surface line method,control section method are analyzed in this paper.What＇s more,calculation formulas of long series design flood with historical flood as well as short series are both expounded in this paper.Through the comparison of the influence of the two kinds of design flood calculation formulas,we discuss how to choose reasonable flood series according to the engineering actual situation.

关 键 词：洪水系列代表性 设计洪水 历史洪水 实测洪水 

分 类 号：TV122[水利工程—水文学及水资源]