上海中心城典型片区降雨空间分布均匀性研究  

Study on spatial distribution uniformity of rainfall in typical area of Shanghai central city

作　　者：徐文征 李鹏程 丁嘉 XU Wenzheng;LI Pengcheng;DING Jia(Shanghai Municipal Engineering Design Institute(Group)Co.,Ltd.,Shanghai 200092,China)

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海200092

出　　处：《给水排水》2023年第10期33-37,共5页Water & Wastewater Engineering

摘　　要：近年来极端天气频发,相应的排水系统提标工程建设也不断提速,考虑单个排水系统面积较小,工程设计中通常假定片区降雨空间分布是均匀的.随着多排水系统联合提标工程实践增多,服务面积的增大使得实际降雨空间分布是否均匀成为需要研究的问题,以上海中心城苏州河典型片区为例,利用16个雨量站近10年的日降雨量、日最大1小时降雨量测量数据,通过克里斯琴森均匀系数分析长历时降雨、短历时降雨空间分布的均匀性,研究表明对于长历时降雨,其空间分布不均匀的场次占比66%;针对排水系统主要应对的短历时强降雨,其不均匀场次占比高达80%.In recent years,climate change has led to frequent extreme weather and climate events.The corresponding drainage system upgrading project construction has also been accelerated.Considering the small area of a single drainage system,the spatial distribution of rainfall in the area is usually assumed to be uniform in engineering design.With the increase of the practice of multi-drainage system joint upgrading project,the increase of service area makes it difficult to avoid whether the spatial distribution of actual rainfall is uniform.Taking the typical area of Suzhou River in Shanghai central city as an example,this paper uses the daily rainfall and daily maximum 1 hour rainfall measurement data of 16 rainfall stations in the past 10 years to analyze the spatial distribution uniformity of long-duration rainfall and short-duration rainfall through the Christensen uniformity coefficient.The research shows that for long-duration rainfall,the proportion of uneven spatial distribution is 66%.For the short-duration heavy rainfall that the drainage system mainly deals with,the proportion of uneven fields is as high as 80%.

关 键 词：排水设施 降雨 空间分布 均匀性 上海中心城区 

分 类 号：TU992[建筑科学—市政工程]