摘要
传统的城市空间开发模式缩短了初始产流时间,增大了暴雨径流峰值和径流总量,成为城市雨洪问题的根本症结所在。采用SWMM研究了山地城市典型区域在开发前和现状用地布局情景下的径流效应,并采用绿色屋顶、绿色屋顶+渗透广场、调节池、绿色屋顶+渗透广场+调节池四种雨水控制利用方案进行了模拟分析。结果表明,径流曲线的形状与降雨过程线相似;现状雨水控制利用方案的径流峰值和径流总量可分别达到开发前的7倍和7.1倍;调节池能削减峰值流量,最高可削减65%;绿色屋顶、绿色屋顶+渗透广场、绿色屋顶+渗透广场+调节池对径流总量和径流峰值具有双重削减效果,其中,绿色屋顶+渗透广场+调节池的削峰减量效果最好,分别可达81%和90%。
The traditional land development mode which has shorten the initial runoff time and in- creased runoff peak and total volume of runoff has become the fundamental crux of the urban stormwater issues. Storm Water Management Model （SWMM） was used to research the runoff effect in the pre-development and current land use layout, and four stromwater control and utilization schemes including green roof, green roof combined with permeable square, detention tank and green roof combined with per- meable square and detention tank were used to simulate and analyze. The results showed that the shape of the runoff curve was similar to that of the rainfall process line. The runoff peak and total volume of runoff of the existing stromwater control and utilization scheme could be increased by 7 times and 7.1 times respectively compared to those of the pre-development. The detention tank could reduce the and the maximum reduction could be 65%. Green roof, green roof combined with permeab runoff peak, le square and green roof combined with permeable square and detention tank all had reduction effects on both runoff peak and total volume of runoff. Among them, green roof combined with permeable square and detention tank had the best reduction effects, which could reach 81% and 90% respectively.
出处
《中国给水排水》
CAS
CSCD
北大核心
2016年第1期100-105,共6页
China Water & Wastewater
基金
重庆市教委2015年度科学技术研究项目(KJ1504207)
重庆市建设科技计划项目[城科字2015第(1-32)号]
国家水体污染控制与治理科技重大专项(2008ZX07315-001)
关键词
雨水控制利用方案
SWMM
绿色屋顶
渗透广场
调节池
径流系数
stromwater control and utilization scheme
SWMM
green roof
permeable square
detention tank
runoff coefficient
