严重内涝的发生使人们排水理念已由“尽快把水排出去”转变为“尽量把水留下来”。留下来的水可资源化和降低排水管道的负荷,改善生态环境。现通过分析兰州市内涝成因,列出了渗透地面、绿色屋顶、植草沟、生物滞留设施四项工程措施,建设海绵城市,并提出了具体工程做法,有利于减少雨水径流,降低初期雨水对河流生态的污染。 The occurrence of serious waterlogging causes the concept of drainage of people from “as soon as the water is discharged ” into “try to keep the water ”. The remaining water can be used to reduce the load on drainage pipes and improve the ecological environment. By analyzing the causes of waterlogging in Lanzhou City, we listed four engineering measures of infiltration of the ground, green roofs, grass ditches and biological retention facilities, construction of a sponge city, and put forward specific engineering practices that are conducive to reducing runoff and reducing the impact of initial rainfall on rivers Ecological pollution.