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以邯郸市的育德花园为研究对象,在验证SWMM模型在该区域适用性的基础上,模拟区域城市化前后以及透水性路面、绿色屋顶、蓄水箱、透水性路面+蓄水箱、透水性路面+绿色屋顶等5种低影响开发措施在单场降雨和连续降雨事件中的径流过程。结果表明城市化过程使得起涨速率增加,洪峰时间提前,洪峰流量增高,径流系数随之增大。5种低影响开发措施在单场降雨和长期径流影响中都起到了降低洪峰流量,减少径流持续时间,延迟洪峰时间,缓解城市排水管道压力,其中组合措施优于单一措施。
Taking Yude Garden of Handan City as the research object, on the basis of verifying the applicability of SWMM model in this area, the simulation of the urbanization of the area before and after the urbanization, as well as the permeable pavement, green roof, water tank, permeable pavement + water tank, Five types of low-impact development measures such as sexual pavement and green roof in the single-rainfall and continuous rainfall events. The results show that the urbanization process increases the rising rate, the earlier the peak time, the higher the peak flow, and the larger the runoff coefficient. The five low-impact development measures both reduced peak flow, reduced runoff duration, delayed peak time and relieved pressure on urban drainage pipelines in single rainfall and long-term runoff. The combination measures were better than single measures.