基于SWMM的城市排水管网瓶颈分析与改造评价

Bottleneck Analysis and Reform Evaluation of Urban Underground Drainage Pipe Network Based on SWMM

旧城区地下排水管网由于建设年代久远、管网设计不合理或对降雨预估不足,在遇到高强度暴雨时容易发生排水不畅而出现内涝灾害。为此,提出一种基于暴雨径流管理模型(SWMM)的城市地下排水管网瓶颈分析与改造评价方法,该方法首先通过模拟降雨水文水力过程,对地下排水管网的瓶颈管道进行有效探测,然后提出一种面向改造期望的瓶颈管道改造迭代模型,对瓶颈管道进行分步改造,并对改造管网排水能力的提升进行评价。同时,采用ArcGIS Engine和C#语言研发了城市地下排水管网瓶颈分析与改造评价平台,验证了该方法的可行性。

As the underground drainage pipe network in the old urban area has been built for a long time, and the pipe network design is not reasonable or the rainfall intensity is underestimated, the underground drainage pipe networks are subject to clogging in the face of intensive rainfall which has led to frequent flooding disasters in recent years. In view of this, a bottleneck analysis and reform evaluation method for the urban underground drainage pipe network was proposed based on the storm water management model （SWMM）. The method firstly simulated the hydrological and hydraulic processes of the rain- fall for effective detecting the bottleneck pipe of the underground drainage pipe network. Then, an expec- tation-oriented iterative model was proposed to identify the stepwise reform plan of the bottleneck pipes and evaluate the improvement of drainage capacity. Meanwhile, the bottleneck analysis and reform evaluation platform of urban underground drainage pipe network was developed by using the ArcGIS Engine and C# language, which verified the feasibility of the method.