基于SWMM模型的S县城雨水系统优化模拟

Optimization Simulation of Rainwater System in County S Based on SWMM Analysis Model

为了有效调度城市雨水系统中的灰色管渠部分,使之能与绿色基础设施联动作用,最大限度地控制城市雨水,对S县城雨水系统进行优化模拟并建立SWMM模型。结果表明,通过改造S县雨水系统,当地在典型降雨下的径流峰值能延迟约9 min出现,5 a重现期以下超载管道和超载节点数比改造前降低了90%以上,排放口流量明显降低。

In order to effectively regulate the gray pipe culverts of the urban rainwater system,enabling them to interact with green infrastructure and control urban rainwater to the maximum extent,this study is made on the optimization simulation of the rainwater system in County S,and a SWMM model is developed.The results by renovating the rainwater system in County S show that the local peak runoff under typical rainfall condition can be delayed by about 9 minutes,and the number of overloaded pipelines and nodes below the 5 a recurrence period has decreased by more than 90%compared to the number before the renovation,and the flow rate of discharge outlet has also been significantly reduced.