摘要
为高效评估市政污水管道渗漏对地下水污染的影响,系统地建立了市政污水管道渗漏污染物迁移数学解析模型,给出污染物相对浓度变化的解析表达式,并采用土柱试验数据验证模型的合理性和可靠性。基于模型计算结果,分别得到污水重力流管道及压力流管道的击穿曲线,发现压力管道的击穿时间仅为重力流管道的0.11倍。同时也揭示了击穿时间随水头的增加下降的变化规律。相同水头作用下,通过敷设钠基膨润土防水毯(GCL)后,击穿时间可延长约10倍,可有效减缓市政污水管道渗漏对地下水土的污染。
In order to efficiently evaluate the influence of municipal sewage pipeline leakage on groundwater contamination, a mathematical analytical model of contaminant transportation was established systematically, and the analytical expression of contaminant relative concentration change was given. The rationality and reliability of the model were verified by soil column experiment data. Based on the model calculation results, the breakdown curves of gravity flow pipeline and pressure flow pipeline were obtained respectively, and it was found that the breakdown time of pressure pipeline was only 0.11 times that of gravity flow pipeline. At the same time, the breakdown time decreases with the increase of water head. Under the action of the same water head, the breakdown time can be extended by about 10 times after laying the GCL impermeable layer, which can effectively block the contamination of underground water and soil caused by the leakage of municipal sewage pipes.
作者
王亮
杨华展
吴舒畅
罗昊进
汤泽和
于俊赞
丁昊
朱世俊
WANG Liang;YANG Huazhan;WU Shuchang;LUO Haojin;TANG Zehe;YU Junzan;DING Hao;ZHU Shijun(The Architectural Design and Research Institute of Zhejiang University Co.,LId.,Hangzhou 310028,China;Huadong Engineering Co.,Lld.,Hangzhou 311122,China;Wenzhou Design Group Co.,Ltd.,Wenzhou 325000,China;Zhejiang Urban and Rural Plarning Design Institute,Hangzhou 310000,China;College of Civil Engineering and Architecture,Zhejiang Unirversity,Hangzhou 310027,China;College of Crvil Engineering,Zhejiang University of Technology,Hangzhou 310014,China)
出处
《给水排水》
CSCD
北大核心
2022年第9期117-123,共7页
Water & Wastewater Engineering
基金
国家重点研发计划课题(2018YFC1802303)。
关键词
污水管道
渗漏
地下水污染
解析模型
Sewage conduit
Leakage
Groundwater contamination
Analytical model
