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以武汉虎泉地铁站为例,采用国内适用性较好的芝加哥雨型合成降雨过程线,利用城市综合流域排水模型(ICM)建立地铁站及其周边区域的降雨径流模型.模拟分析了在不同降雨重现期下地铁站各出站口处的水深、该研究区排水系统出水管的负荷以及该地块的地表径流情况,并且重点分析了B、C出站口周边管段的负荷和满流时间.用美国暴雨管理模型SWMM对ICM模型的模拟结果做了对比验证.模拟结果表明,地铁站可以承受的最大暴雨重现期是40a一遇降雨,即在降雨强度达到或者超过60.7mm/h时,地铁站有被洪水淹没的危险,另外通过分析B、C出口周边的管道,编号为7、8、9、10、11的管道将是后期管网改造的重点.模拟结果为地铁站周边排水系统设计改造提供参考,也能为地铁站安全运营提供合理化的建议.
Taking Wuhan Huquan Subway Station as an example, this paper uses a well-established Chicago rain-type synthetic rainfall process line to establish a rainfall run-off model of the subway station and its surrounding area by using Integrated City Drainage Model (ICM) The water depth at each station exit of the subway station under the rainfall reclamation period, the load of the water outlet pipe of the drainage system in the study area and the surface runoff of the plot, and analyzes the load and full flow of the pipe sections around the outlet of stations B and C Time.With the storm management model SWMM in the United States, the simulation results of the ICM model are compared and verified.The simulation results show that the maximum rainstorm recurrence period of the subway station is 40a rainfall, that is, when the rainfall intensity reaches or exceeds 60.7mm / h , The subway station is in danger of flooding, and the pipelines numbered 7, 8, 9, 10 and 11 will be the focus of the later pipe network reconstruction by analyzing the pipelines around outlets B and C. The simulation result is that around the subway station Drainage system design to provide reference, but also for the safe operation of the subway station to provide rationalization proposals.