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在对香山地区地形、汇水情况、降雨径流等数据资料进行调查研究的基础上,以香泉环岛汇水区为研究对象,基于SWMM软件平台构建了汇水区降雨径流模型,以2012年7月21日暴雨过程和淹没水深调研资料检验模型基于构建的模型分析1年、5年、10年一遇降雨重现期条件下现状情景和添加低影响开发设施情景的降雨径流过程,量化了3种降雨情景下低影响开发措施对汇水区出口最大淹没水深的削减率分别为52.7%、16.7%、11.1%,模拟结果为区域增加雨水利用和防洪安全提供技术支撑。
Based on the investigation of the data of Xiangshan area such as topography, water catchment and rainfall runoff, taking the catchment area of Xiangquan Island as the research object, a catchment runoff model was constructed based on SWMM software platform. According to the data of 7 Rainstorm process and Submerged water depth survey data test model on the 21st of January Based on the constructed model, we analyzed the current situation under the conditions of 1, 5 and 10 years of rainfall recurrence and the rainfall and runoff process of adding low-impact development facilities, and quantified 3 The reduction rates of the maximum submerged depth at the exit of catchment under the low rainfall scenario were 52.7%, 16.7% and 11.1%, respectively. The simulation results provided technical support for increasing rainwater utilization and flood control in the region.