唐山市区短历时设计暴雨雨型分析

发布时间：2018-05-13 05:12

本文选题：唐山市区 + 短历时　；参考：《给水排水》2017年S1期

【摘要】：利用唐山市国家基本气象站1964~2014年的逐分钟降雨资料,通过模糊识别法对历时60min、120min和180min的降雨过程进行统计分析,并分别采用芝加哥法和PC法推求唐山市区3个历时,重现期2年以5min为单位时段的短历时设计暴雨雨型,比较分析两种方法所得结果的差异。结果表明:芝加哥法和PC法推求的唐山市区短历时设计暴雨雨型均呈单峰型,这与模糊识别法统计的结果基本吻合;两种方法得到的60min和120min设计暴雨雨型峰值基本处于整场降雨过程的1/3分位,而历时180min的雨型峰值则均超前于整场降雨过程的1/3分位;芝加哥法和PC法推求短历时设计暴雨雨型基本具有"单峰型、时间短、强度大"的特点,因此当短历时暴雨发生时,各相关部门应积极配合,在第一时间做好城市排水防涝工作。
[Abstract]:Based on the hourly rainfall data of Tangshan National basic Weather Station from 1964 to 2014, the rainfall process of 60min ~ 120min and 180min was statistically analyzed by fuzzy recognition method, and the Chicago method and PC method were used to calculate the three durations of Tangshan urban area, respectively. The short duration design rainstorm rain pattern with 5min as the unit period for 2 years in the recurrence period was compared and analyzed with the difference of the results obtained by the two methods. The results show that the torrential rain patterns of the short-duration design in Tangshan urban area by Chicago method and PC method are both single-peak, which is basically consistent with the results of fuzzy recognition method. The 60min and 120min design rainstorm peak values obtained by the two methods are basically at 1 / 3 quartile of the whole rainfall process, while those of the duration 180min type peak are both ahead of the 1 / 3 quartile of the whole rainfall process. The short duration design rainstorm rain type obtained by Chicago and PC methods basically has the characteristics of "single peak type, short time and high intensity". Therefore, when the short duration rainstorm occurs, the relevant departments should cooperate actively. In the first time to do a good job in urban drainage and waterlogging work.
【作者单位】：河北省气候中心;辽宁省庄河市气象局;石家庄市深泽县气象局;
【基金】：公益气象行业专项(GYHY201506014) 河北省气象局科研项目(16ky05)
【分类号】：TU992

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