北京城市暴雨和雨型的研究

A Study on Storm and Rianfall Pattern in Beijing City

暴雨是北京市洪水的主要成因，同时也是水资源补给的重要来源。本文编制了北京的五塔寺站（下称北京站）Ｔ＝５、１０、１５、２０、３０、４５、６０、９０、１２０ｍｉｎ及３、６、１２、２４ｈ等１３个时段，Ｎ＝２００、１００、５０、２０、１０、５、２等７个不同重现期的设计暴雨公式。同时，以１０ｍｉｎ、１和２ｈ为单位时段，统计分析出１２０ｍｉｎ、１２和２４ｈ的设计雨型。本成果能满足北京城近郊区水利工程、地下雨洪排水管网的设计要求。

Storms are not only the improtant supply for water resources but also the important cause of for-mation of flood in Beijing City. This paper gives a storm designning formula for 13 time-intervals,T=5,10,15,20,30,45,60,90,120,180,360,720and 1440min. ,and 7 different recurrence-intervals,N=200,100,50,20,10, 5and2,at the Beijing Rainfall Station. Based on the time-intervals of 10 minutes,1 hour and 2 hours, this paper makes an analysis of the rainfall pat- tern on 120 minutes,12hours and 24 hours. The formula and the rainfall pattern presented in this paper can be effectiveiy used in the design of surface,lake and river conservancy engineering and the design of underground drainage pipeline.