基于Arc GIS的SWMM模型在海绵城市规划中的应用

以上海市崇明实验生态社区为例,采用基于Arc GIS的SWMM快速建模,在传统开发和低影响开发情景下分别对年径流总量控制率进行连续性模拟,模型计算结果显示,低影响开发情景下年径流总量控制率模拟结果与指标分解计算结果基本一致,低影响开发对于中小降雨的径流削减效果显著。为上海及其周边地区的海绵城市规划提供参考。

Application of SWMM Model Based on Arc GIS in Sponge City Planning

Taking Shanghai Chongming Experimental Ecological Community as an example,SWMM rapid modeling based on ArcGIS is used to carry out the continuity simulation of annual runoff volume control rates respectively under the situations of traditional development and low-impact development.The calculation results of the model show that the control rate simulation result of annual runoff volume is basically consistent with the result of index decomposition under the situation of low-impact development,and the low-impact development has a significant effect on the runoff reduction of small and medium rainfalls.The reference is provided for the sponge city planning of Shanghai and its surrounding regions.