天津武清区暴雨城市内涝风险阈值研究

Study on the Threshold of Rainstorm Waterlogging in the Wuqing District of Tianjin

摘要: 本文利用百分位法分析武清国家自动站建站以来(1959~2016年)逐日降水资料，确定出武清区极端气候降水阈值。通过灾情普查调研，完成武清区暴雨内涝风险隐患点的普查，建立武清区内涝风险预警服务相关的资料图集，得到适合武清区城市内涝风险预警阈值标准。利用2013~2017年汛期(6~9月)武清城区5个自动气象站逐小时降雨量数据、武清区市政排水所的汛期排水记录，对武清城区出现的积水个例与同期自动站降水强度进行相关对比分析，找出适合武清区道路积水临界预警指标，为武清区今后开展城市内涝风险预警业务打下基础。

Abstract: In this paper, threshold value of extreme climate precipitation in Wuqing District is determined by using percentage method to analyze daily precipitation data of Wuqing National Automatic Weather Station (1959-2016). Through investigation of the disasters, a general survey of the hidden points of rainstorm waterlogging risk in Wuqing District was completed, and an atlas of information related to the waterlogging risk warning service for in Wuqing District was established. In addition, the early warning threshold for risk of rainstorm waterlogging in Wuqing District was also obtained. Using the hourly rainfall data of over 5 automatic weather stations in flood season (from June to September) during 2013-2017 in Wuqing urban area associated with the flood drainage records of the Wuqing Municipal Drainage Institute, a comparative analysis was performed of the case of waterlogging occurrence in the urban area of Wuqing City and precipitation intensity of automatic stations in the same period, and then to derive a critical early warning index of urban road waterlogging in Wuqing District. It will lay the foundation for Wuqing District to carry out early-warning services for urban waterlogging risk in the future.