低影响开发城市内涝及水质调控模拟分析
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摘要
针对城市内涝积水及径流污染,基于地理信息系统GIS和SWMM平台建立雨水管网模型,对比分析布设LID措施前后降雨径流、节点积水、管道荷载及排放污染物负荷,研究LID措施水量水质调控效果。结果表明,LID措施削减径流量37.2%、减少节点积水量99.4%、降低管道充满度、削减排放污染物负荷。LID模式能够调控降雨径流、削减污染物负荷,缓解节点溢流积水,降低管网运行荷载,降低内涝积水和面源污染风险,具有良好的水量和水质调控效果。
Based on the GIS and SWMM platforms of GIS and SWMM,the rainwater pipe network model is built to compare and analyze the rainfall runoff,node water logging,pipeline load and pollutant load discharge before and after the LID measures are taken. The effect of LID measures on water quantity and quality are studied. The results show that LID measures have reduced runoff by 37.2%,reduced node water accumulation by 99.4%,reduced pipeline fullness,and reduced pollutant loads. The LID model can regulate rainfall runoff,reduce pollutant load,relieve node overflow water,reduce pipe networks operating load,reduce the risk of internal water and non-point source pollution,and has good water and water quality regulation effects.
Based on the GIS and SWMM platforms of GIS and SWMM,the rainwater pipe network model is built to compare and analyze the rainfall runoff,node water logging,pipeline load and pollutant load discharge before and after the LID measures are taken. The effect of LID measures on water quantity and quality are studied. The results show that LID measures have reduced runoff by 37.2%,reduced node water accumulation by 99.4%,reduced pipeline fullness,and reduced pollutant loads. The LID model can regulate rainfall runoff,reduce pollutant load,relieve node overflow water,reduce pipe networks operating load,reduce the risk of internal water and non-point source pollution,and has good water and water quality regulation effects.
引文
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[2]吴艾欢.雨水系统优化及降雨径流全过程控制研究[D].山东青岛:青岛理工大学,2018.
[3]马萌华,李家科,邓陈宁.基于SWMM模型的城市内涝与面源污染的模拟分析[J].水力发电学报,2017,36(11):62-72.
[4] Simpson M G,Roesner L A. Hydrologic Modeling and Capital Cost Analysis of Low-Impact Development[J]. Journal of Sustainable Water in the Built Environment,2018,4(2):05018003.
[5]王建龙,车伍,易红星.基于低影响开发的城市雨洪控制与利用方法[J].中国给水排水,2009,25(14):6-9.
[6]胡作鹏,刘志强,彭森,等.低影响开发(LID)雨水径流控制效果模拟[J].环境工程学报,2016,10(7):3 956-3 960.
[7]罗欢.城市暴雨内涝源头控制技术研究[D].成都:西南交通大学,2016.
[8]赵冬泉,陈吉宁,佟庆远,等.基于GIS构建SWMM城市排水管网模型[J].中国给水排水,2008,24(7):88-91.
[9]黄国如,黄维,张灵敏,等.基于GIS和SWMM模型的城市暴雨积水模拟[J].水资源与水工程学报,2015,26(4):1-6.
[10]石"",万东辉,陈黎,等.基于GIS和SWMM的城市暴雨内涝淹没模拟分析[J].水电能源科学,2014,(6):57-60.
[11] Keifer C J,Chu H H. Synthetic Storm Pattern for Drainage Design[J]. Journal of the Hydraulics Division,1957,83(4):1-25.