降雨情景驱动下绿地空间单元及组合产流模拟  

Green space unit and combination runoff generation simulation driven by rainfall scenarios

作　　者：田菁 李杏 赵群[2] 刘云[1] 梁琼[1] TIAN Jing;LI Xing;ZHAO Qun;LIU Yun;LIANG Qiong(Beijing University of Agriculture,College of Bioscience and Resources Environment/Key Laboratory of Urban Agriculture in North China,Ministry of Agriculture and Rural Affairs,Beijing 102206,China;Beijing University of Agriculture,School of Landscape Architecture,Beijing 102208,China)

机构地区：[1]北京农学院生物与资源环境学院/农业农村部华北都市农业重点实验室,北京102206 [2]北京农学院园林学院,北京102208

出　　处：《北京农学院学报》2023年第2期26-30,共5页Journal of Beijing University of Agriculture

基　　金：国家自然科学基金项目(40871232);首都科技创新券(20210720797679);北京市自然科学基金—教委联合重点项目(KZ201810020025)。

摘　　要：【目的】为探明海绵城市建设过程中绿地空间配置对城市绿地发挥削减降雨洪峰及调节降雨径流的作用。【方法】选取住宅小区常见绿地空间配置为参考,利用SWMM模型进行降雨情景模拟,得到不同绿地空间单元及其组合对相同降雨情景下产流过程的影响。【结果】绿地空间内部布局对降雨洪峰和降雨径流有一定影响,空间单元配置中设置面积为1∶1∶1的3个子汇水区以及在空间单元组合中设置单一的基本空间单元,均对降雨洪峰的推迟、降雨径流削减和控制的效果表现较差。【结论】绿地空间布局的多样性对城市绿地削减降雨洪峰,控制降雨径流起到有利作用,较为集中的大型绿地对于降雨径流的削减效果明显。[Objective]To explore the role of green space allocation in reducing rainfall peak and regulating rainfall runoff in urban green space during sponge city construction.[Methods]The SWMM model was used to simulate the rainfall scenarios,and the effects of different green space units and their combinations on the runoff generation process under the same rainfall scenarios were obtained.[Results]The internal layout of the green space has a certain impact on the rainfall flood peak and rainfall runoff.Three sub-catchment areas with an area of 1∶1∶1 and a single basic space unit set in the spatial unit configuration have poor effects on the delay of rainfall flood peak,the reduction and control of rainfall runoff.[Conclusion]The diversity of the spatial layout of green space plays a beneficial role in reducing the rainfall flood peak and controlling the rainfall runoff of urban green space,and the relatively concentrated large green space has an obvious reduction effect on the rainfall runoff.

关 键 词：SWMM模型 径流控制 低影响开发 

分 类 号：TU992[建筑科学—市政工程]