| 雨水管道沉积物污染初期冲刷效应及初期雨水量研究 |
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| 引用本文： | 张青文,余健,李天兵.雨水管道沉积物污染初期冲刷效应及初期雨水量研究[J].给水排水,2020,46(7):119-124. |
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| 作者姓名： | 张青文 余健 李天兵 |
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| 作者单位： | 湖南大学土木工程学院,长沙 410082;广州中工水务信息科技有限公司,广州 510280 |
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| 基金项目： | 湖南创新型省份建设专项 |
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| 摘 要： | 为了控制雨水管道沉积物在降雨径流的冲刷下再悬浮随雨水排入受纳水体而造成的污染,利用SWMM软件构建汇水面污染冲刷模型,耦合管道沉积物冲刷模型,分析在管道沉积物影响下的径流污染初期冲刷效应,并提出一种初期雨水量的动态计算方法。结果表明:管道沉积物的存在会削弱初期冲刷效应,需要控制比地面截流3~5mm更多的初期雨水,可根据对降雨径流污染的监测数据,结合初期雨水的汇流规律,通过图解法求得。
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| 关 键 词： | 管道沉积物 初期冲刷 初期雨水 SWMM |
Study on first flush effect and initial rainwater volume in storm sewer sediments pollution |
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| Zhang Qingwen,Yu Jian,Li Tianbing.Study on first flush effect and initial rainwater volume in storm sewer sediments pollution[J].Water & Wastewater Engineering,2020,46(7):119-124. |
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| Authors: | Zhang Qingwen Yu Jian Li Tianbing |
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| Affiliation: | (College of Civil Engineering,Hunan University,Changsha 410082,China;Guangzhou Zhonggong Water Information Technology Co.,Ltd.,Guangzhou 510280,China) |
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| Abstract: | In order to control the pollution caused by storm sewer sediments discharging into the receiving water under the erosion of rainfall runoff,the flush model of catchment pollution build by SWMM and scour model of sewer sediments is necessary.The purpose is to analyze the first flush effect of runoff pollution under the influence of storm sewer sediments.And a dynamic calculation method of initial rainfall is put forward.The results show that the existence of storm sewer sediments will weaken the first flush effect.It is necessary to control more initial rainwater than the ground rainfall of 3~5 mm.The initial rainwater volume can be calculated by graphic method using the monitoring data of rainfall runoff pollution and initial rainfall confluence law. |
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| Keywords: | Sewer sediments First flush Initial rainwater SWMM |
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