山西省设计暴雨雨型分析

Analysis of design storm pattern in Shanxi Provience

根据山西省气候特点,将全省分为4个暴雨分区。无资料地区多利用设计暴雨计算设计洪水,在推求设计洪水过程线时要用到设计暴雨的雨型。本文简述了设计暴雨日雨型及时雨型的分析方法,利用这些方法分别对每个暴雨分区进行分析,综合得出了各分区的设计日雨型和时雨型,并且还针对工程控制面积小、汇流历时不足1h的流域,构造出了派生雨型,使小流域利用设计暴雨推求设计洪水过程线所需的设计暴雨雨型更加完善。

According to the climate characters in Shanxi province,the whole province was divided into four storm partitions.The paper used design storm to calculate the design flood in the region without flood data,and utilized the rain storm type in design flood hydrograph.It described the method of analysis for the daily and hourly design storm,and used these methods to analyze each rainstorm district,obtained the rainfall pattern.Aimd at small basin and short confluence time of lasting less than 1h,It constructed out the rain derived type,so that the rainfall pattern used in design flood was more consummate.