海绵城市理念下的绿色雨水基础设施规划设计探讨

Discussion on the Planning and Design of Green Rainwater Infrastructure under the Concept of Sponge City

随着城镇化水平的不断提升,城市发展过程中面临着极大的雨洪灾害挑战。基于海绵城市理念的绿色雨水基础设施能有效控制地表径流量,降低灾害风险,满足现代化城市的生态环境要求。文章从海绵城市绿色雨水基础设施的设计目标和原则出发,明确了绿色雨水基础设施的选择及对场地特性的要求,通过对绿色屋顶设施进行模拟试验,研究了不同降雨强度下绿色屋顶对雨水径流量的削减程度及径流量削减率随降雨时间变化的情况,以期为相关研究人员提供参考。

With the continuous improvement of urbanization level,city is facing great challenges from rain and flood disasters in development process.The green rainwater infrastructure based on the concept of sponge city can effectively control surface runoff,reduce the disaster risk and meet the ecological environment requirements of modern cities.Based on the design objectives and principles of green rainwater infrastructure in sponge city,this paper clarifies the selection of green rainwater infrastructure and the requirements for site characteristics.Through the simulation test of green roof facilities,the reduction degree of rainwater runoff by green roof under different rainfall intensities and the change of runoff reduction rate with rainfall time are studied in order to provide reference for relevant researchers.