基于暴雨衰减特性的上海市长历时综合暴雨公式  

Study on long duration comprehensive rainstorm formula based on rainstorm attenuation characteristics in Shanghai

作　　者：贾卫红 徐卫忠[2] 李琼芳[3,4] 周正模 JIA Weihong;XU Weizhong;LI Qiongfang;ZHOU Zhengmo(Shanghai Water Planning and Design Institute,Shanghai 200233,China;Shanghai Climate Center,Shanghai 200030,China;College of Hydrology and Water Resources,Hohai University,Nanjing 210098,China;Yangtze Institute for Conservation and Development,Nanjing 210098,China)

机构地区：[1]上海市水务规划设计研究院,上海200233 [2]上海市气候中心,上海200030 [3]河海大学水文水资源学院,江苏南京210098 [4]长江保护与绿色发展研究院,江苏南京210098

出　　处：《水科学进展》2021年第2期211-217,共7页Advances in Water Science

基　　金：国家自然科学基金资助项目(51879069)。

摘　　要：编制适用于不同历时的综合暴雨公式是协调城市管网排水与区域防洪治涝的重要基础。选用上海市代表雨量站徐家汇站65 a实测雨量资料,建立不同重现期暴雨强度与历时关系,解析暴雨衰减规律,编制单一重现期暴雨公式,结合雨力公式推求适用不同重现期的长历时综合暴雨公式,并推导出暴雨重现期公式。结果表明:不同重现期1~24 h历时暴雨强度均以0.74的衰减指数衰减,据此推求的长历时综合暴雨公式可计算1~24 h任意历时、2~100 a任意重现期的设计暴雨,且平均相对和平均绝对均方根误差分别为1.9%和0.009 mm/min,符合规范要求;暴雨重现期公式可估算1~24 h历时内任意场次暴雨的重现期,高效地服务于城市洪涝防治决策。成果已纳入上海市治涝地方标准,对其他城市具有参考价值。The comprehensive rainstorm formula applicable to different durations is an important basis for coordinating urban pipe network drainage and regional flood and waterlogging control.The 65-year monitored rainfall series of Xujiahui meteorological station,which was selected to be the representative rain station of Shanghai City,was collected to establish the relationship between rainstorm intensity and duration in different return periods.The rainstorm attenuation characteristics was revealed to formulate the single rainstorm formula of each return period.The long duration comprehensive rainstorm formula applicable to different return periods was explored with reference to the rain force formula,and the rainfall return period formula was derived.Results show that the rainstorm intensity attenuation index between 1 hour and 24 hours in different return periods are approximately 0.74.The obtained long duration comprehensive rainstorm formula could be used to calculate the design storm of any duration(1—24 hours)and any return period(2—100 years),and the relative and absolute root mean square error of the formula are 1.9%and 0.009 mm/min,which meet the requirements of the criterion,respectively.Also,the rainfall return period formula could be applied to ascertain the return period of any rainfall event between 1 hour and 24 hours so as to serve urban flood prevention and control decision making effectively.Notably,the research achievements have been incorporated into the local standards of waterlogging control in Shanghai City and are of significant reference value to other cities.

关 键 词：暴雨衰减指数 长历时 暴雨公式 暴雨重现期 上海市 

分 类 号：TV125[水利工程—水文学及水资源] P333.2[天文地球—水文科学]