基于SWMM的海绵城市道路雨洪控制效果评估

Effect Assessment of Stormwater & Flood Control of Sponge City Road Based on SWMM

为量化评估LID措施在市政道路中的雨洪控制效果,探讨海绵城市理念在市政道路设计中的应用,以昆明市官渡区241路为研究对象,通过建立海绵城市道路的SWMM模型,围绕汇水区概化、降雨条件设计、模型参数选择、率定及验证等方面探讨海绵城市道路雨洪控制效果。研究表明,海绵城市道路能够有效地削减场降雨的峰值流量、径流总量及年降雨径流总量;相较于容积法,SWMM模型更适用于海绵城市道路雨洪控制效果评估。

In order to quantitative evaluate the effect of LID measures on the control of rain and flood in municipal roads,explore the application of sponge city concept in the design of municipal roads,No.241 Road,Guandu District in Kunming is taken as the researched object.SWMM model of sponge city road are established to discusses the effect of road rain and flood control in sponge city from the aspects of the generalization of catchment area,rainfall condition design,model parameter selection,calibration and verification.The results show that the sponge city road can effectively reduce the peak flow,total runoff and annual rainfall runoff of field rainfall;Compared with volume method,SWMM model is more suitable for the evaluation of the effect of rain flood control on sponge city road.