植被渗透浅沟对城市暴雨径流的调蓄效应研究  

Study on Regulation Effect of Grass Filter Strip on City Rainstorm Runoff

作　　者：汪艳宁[1,2] 张杏娟[1,2] 程方[1,2] 王秀朵[3] 

机构地区：[1]天津城市建设学院环境与市政工程系,天津300384 [2]水质科学与技术天津市重点实验室,天津300384 [3]天津市市政工程设计研究院,天津300051

出　　处：《中国给水排水》2012年第5期61-63,共3页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07314-004)

摘　　要：建造植被渗透浅沟(GFS),研究其对城市暴雨径流的调蓄效应。结果表明:植被渗透浅沟能起到延缓和削减洪峰、加强城市排水安全保障的重要作用。当水力负荷从1.47 m3/(m2.d)增至5.88 m3/(m2.d)时,GFS能削减70%以上的洪峰流量。此外,GFS表面雨水的流速在0.016～0.036 m/s之间,约为管道最小设计流速的5%,在进行GFS下游管道水力设计时,可将流行时间大大延长,从而减小下游管渠的设计断面,降低城市雨水管网系统的工程造价。The regulation effect of grass filter strips （GFS） on city rainstorm runoff was studied. The results showed that GFS could delay and reduce the flood peak, and thus could play an important role in strengthening the security of municipal drainage engineering. When hydraulic loading rate was increased from 1.47 ma/（m^2 · d） to 5.88 ma/（m^2 · d）, GFS could reduce more than 70% of flood peak flow. The velocity of rain flow on the surface of GFS was between 0. 016 and 0. 036 m/s, which was about 5% of minimum flow velocity in pipeline design. Therefore, implementing GFS can greatly extend flow time and reduce the downstream section of the pipeline design, saving construction costs for the city rainwater pipe network system.

关 键 词：植被渗透浅沟 城市暴雨径流 调蓄效应 

分 类 号：TV121[水利工程—水文学及水资源]