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针对当今日益严重的城市暴雨内涝问题,以苏州市某小区为例,基于SWMM模型中的LID模块,分别模拟了现状条件和布设多孔路面在暴雨重现期为0.5、1、5、10年下路面的水文状况。结果表明,相同重现期下与现状模拟相比,加入多孔路面措施可有效减少总径流量、径流系数、总溢流量,铺设多孔路面亦可增加入渗量,在重现期为0.5、1、5、10年与现状模拟相比入渗量分别增加了17.1%、20.4%、31.4%和36.1%,可见增加多孔路面可有效减缓城市雨水管网的输水压力、降低城市雨洪事件的发生,为实际雨洪控制工程提供理论依据。
Aimed at the increasingly serious urban waterlogging problem in urban area today, taking a district in Suzhou City as an example, based on the LID module in the SWMM model, the status quo and the laying of porous pavement were simulated respectively under the conditions of 0.5, 1, 5 and 10 years Pavement hydrology. The results show that compared with the current situation, the measures of adding porous pavement can effectively reduce the total runoff, runoff coefficient and total overflow in the same period of return, and the infiltration can be increased by laying porous pavement. Compared with the current situation, the infiltration rates increased by 17.1%, 20.4%, 31.4% and 36.1% respectively over the past 5 years and 10 years. It can be seen that increasing the porous pavement can effectively reduce the pressure of water transmission in the urban storm water pipe network and reduce the occurrence of urban rain flood events , Provide the theory basis for the actual stormwater control project.