推求无资料地区设计洪水的一种方法

An Approach to Estimation of Design FloodHydrograph Based on Rainfall Data

在地貌单位线、菲利浦下渗公式和暴雨特征频率分布的基础上，引用产流开始时刻和净雨量的概念，推求不同净雨情况下不产流暴雨事件的概率，从而求得洪峰流量小于和等于给定Ｑｐ值的理论频率分布及其相应的重现期。在贵州和山西应用结果表明，该方法更适用于半干旱地区。

Based on the geomorphologic unit hydrograph, the Philip infiltration equation and the rainfall property frequency distribution, this paper presents the model for the estimation of the theoretical frequency distribution and return period of the peak discharge less than or equal to the given Q p through the derivation of the probabilities of rainfall events without yielding runoff using the concept of initial time of runoff and excess rainfall. This paper also gives the examples of the model test and analyzes the prospect of application of the model.