LID措施与雨水调蓄池联合运行的模拟研究
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摘要
选取昆明某片区为研究对象,以截留全年50%总降雨量为目标,采用SWMM模拟研究LID措施与雨水调蓄池联合运行的效果。在0.5、1、2年一遇重现期下分别运行仅设雨水调蓄池和LID+雨水调蓄池两种方案,结果表明,LID+雨水调蓄池措施对径流总量、径流峰值均有明显削减作用,对污染物的截留量有显著提升,且截留效率随重现期的增加而减小;在目前设置参数下,LID措施对径流峰值的出现时间无明显影响。另外,设置LID措施可显著削减雨水调蓄池容积。
Taking a section of Kunming as the research object,SWMM model was used to simulate the effect of LID measures combined with stormwater detention tanks,and it was aimed to intercept 50%of the total annual rainfall. Two programs of only detention tanks and LID + stormwater detention tanks were operated respectively in the return period of 0. 5,1 and 2 years. The simulation results indicated that obvious reduction effects of runoff volume and peak runoff were achieved by LID + stormwater detention tanks,and there was a significant increase of pollution interception,and the interception efficiency decreased with the increase of the return period. Under the current setting parameters,LID measures had no obvious effect on the occurrence of the peak runoff. In addition,the volume of stormwater detention tank could be remarkably reduced by LID measures.
Taking a section of Kunming as the research object,SWMM model was used to simulate the effect of LID measures combined with stormwater detention tanks,and it was aimed to intercept 50%of the total annual rainfall. Two programs of only detention tanks and LID + stormwater detention tanks were operated respectively in the return period of 0. 5,1 and 2 years. The simulation results indicated that obvious reduction effects of runoff volume and peak runoff were achieved by LID + stormwater detention tanks,and there was a significant increase of pollution interception,and the interception efficiency decreased with the increase of the return period. Under the current setting parameters,LID measures had no obvious effect on the occurrence of the peak runoff. In addition,the volume of stormwater detention tank could be remarkably reduced by LID measures.
引文
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[3]车伍,杨正,赵杨,等.中国城市内涝防治与大小排水系统分析[J].中国给水排水,2013,29(16):13-19.Che Wu,Yang Zheng,Zhao Yang,et al.Analysis of urban flooding control and major and minor drainage systems in China[J].China Water&Wastewater,2013,29(16):13-19(in Chinese).
[4]徐晓梅,黎巍,何佳,等.昆明主城合流污水调蓄池截污效能模拟[J].环境科学研究,2012,25(10):1180-1186.Xu Xiaomei,Li Wei,He Jia,et al.Simulation study on the interception efficiency of rainwater storage tanks in Kunming[J].Research of Environmental Sciences,2012,25(10):1180-1186(in Chinese).
[5]林杰,黄金良,杜鹏飞,等.城市降雨径流水文模拟的参数局部灵敏度及其稳定性分析[J].环境科学,2010,31(9):2023-2028.Lin Jie,Huang Jinliang,Du Pengfei,et al.Local sensitivity and its stationarity analysis for urban rainfall runoff modelling[J].Environmental Science,2010,31(9):2023-2028(in Chinese).
[6]谭琼,李田,张建频,等.初期雨水调蓄池运行效率的计算机模型评估[J].中国给水排水,2007,23(18):47-51.Tan Qiong,Li Tian,Zhang Jianpin,et al.Evaluation of computer model for operation efficiency of initial rainwater detention tank[J].China Water&Wastewater,2007,23(18):47-51(in Chinese).
[7]张勤,刘阳.滇池流域初期雨水的截流量确定方法研究[J].中国给水排水,2014,30(13):115-118.Zhang Qin,Liu Yang.Determination of interception capacity of initial rainwater in Dianchi Lake Basin[J].China Water&Wastewater,2014,30(13):115-118(in Chinese).
[8]许萍,何俊超,任心欣,等.基于SWMM模型的城市道路LID设施设计参数优化研究[J].水电能源科学,2016,34(2):21-25.Xu Ping,He Junchao,Ren Xinxin,et al.Optimization of LID design parameters of urban road based on SWMM model[J].Water Resources and Power,2016,34(2):21-25(in Chinese).
[9]Palla A,Gnecco I.Hydrologic modeling of Low Impact Development systems at the urban catchment scale[J].J Hydrol,2015,528:361-368.
[10]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):3956-3960.Hu Zuopeng,Liu Zhiqiang,Peng Sen,et al.Simulation of storm water runoff control effect by low impact development(LID)[J].Chinese Journal of Environmental Engineering,2016,10(7):3956-3960(in Chinese).