垂直防渗帷幕渗漏条件下示踪剂迁移模拟

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Abstract In order to study the feasibility, sensitivity and influencing factors of pumping-tracer joint detection of vertical flexible pollution barrier (VFBS) leakage, a corresponding conceptual model was constructed. The Equivalent Hydraulic Conductivity (EHC) method was used to couple wellbore-aquifer flow, on this basis the multi-physics simulation numerical model was used to simulate the breakthrough process and law of the tracer passing through the VFBS defect under artificial hydraulic induction. The results showed that under pumping induction, an artificial hydraulic pressure difference is formed on both sides of the VFBS to accelerate the speed of the tracer passing through the leakage. But overall, the tracer passing through the leakage was still a very small part, most of the tracer is distributed around the injection well. Under typical conditions (leakage depth 2.2m, size 0.5m, injection concentration 1000μg/L and flow rate 1L/h), the tracer was detected in opposite monitoring well on the 4th day and reached the peak on the 5th day. The deeper the leakage depth was, the peak concentration was lower and the detection time was longer. The tracer was not detected above 4m depth on the opposite side under typical conditions. Taking the 4m leakage depth under typical conditions as an example, With the deviation of the horizontal position of leakage, peak concentration was reduced, When the deviation was 4m, and the tracer was not detected on the opposite side; The greater the injected concentration was, the peak concentration was higher, but the peak time was unchanged, when the concentration was less than 2000μg/L, the tracer was not detected; The larger the hole size was, peak concentration was greater and reached on the 6th day, but all not detected. The side length of the leakage was predicted to be at least when it was 1.07m, the tracer was detected on the opposite side under typical conditions. In general, it is sorted according to the size of the impact on the tracer breakthrough process:horizontal offset distance > leakage depth > leakage size > injected concentration.

Key words： simulation flow and solute field vertical cutoff wall pumping-tracing experiment

Received: 10 December 2019

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X523

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	ZHAO Yang
	LEI Guo-yuan
	XU Ya
	LIU Yu-qiang
	DONG Lu
	LIU Jing-cai
	HUANG Qi-fei

Cite this article:

ZHAO Yang,LEI Guo-yuan,XU Ya等. Simulation of tracer transportation under the leak of vertical flexible barrier system[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(7): 2985-2994.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I7/2985

[1]	Akua B, Anane O, Katherine Y, et al. Iron reductive dissolution in vadose zone soils:Implication for groundwater pollution in landfill impacted sites. Applied Geochemistry, 2018,94:21-27.
[2]	Chidichimo F, Biase M D, Straface S. Groundwater pollution assessment in landfill areas:Is it only about the leachate. Waste Management, 2020,102:655-666.
[3]	罗兰.我国地下水污染现状与防治对策研究[J]. 中国地质大学学报(社会科学版), 2008,(2):72-75. Luo L. Research on groundwater pollution and its prevention-control policy in china[J]. Journal of China University of Geosciences(Social Sciences Edition), 2008,(2):72-75.
[4]	张胜田,林玉锁,华小梅,等.中国污染场地管理面临的问题及对策[J]. 环境科学与管理, 2007,(6):5-7,29. Zhang S T, Lin Y S, Hua X M, et al. The Facing problems and countermeasures of chinese contaminated cite management[J]. Environmental Science and Management, 2007,(6):5-7,29.
[5]	US EPA. National Oil and Hazardous Substance Pollution Contingency Plan[EB/OL]. 1985. Final Rule, 50Federal Register 47912, Washington DC.
[6]	《全国地下水污染防治规划》[J].给水排水, 2011,47(10):80. National groundwater pollution prevention plan[J]. Water & Wastewater Engineering, 2011,47(10):80.
[7]	《土壤污染防治行动计划》[J]. 油气田环境保护, 2016,26(3):59. Action plan for soil pollution prevention[J]. Environmental Protection of Oil & Gas Fields, 2016,26(3):59.
[8]	Darilek G T, Laine D L. Costs and benefits of geomembrane liner installation CQA[C]. Geosynthetics 2001 Conference Proceedings. Portland, Oregon, 2011:65-75.
[9]	Abdoulhalik A, Ahmed A A. The effectiveness of cutoff walls to control saltwater intrusion in multi-layered coastal aquifers:Experimental and numerical study. Journal of Environmental Management, 2017,199:62-73.
[10]	丁亮,王水,曲常胜,等.污染场地修复工程二次污染防治研究[J]. 生态经济, 2016,32(10):189-192. Ding L, Wang S, Qu C S, et al. Research on secondary pollution prevention and control in contaminated site remediation project[J]. Ecological Economy, 2016,32(10):189-192.
[11]	Laine D L, Darilek G T. Locating leaks in geomembrane liners of landfills covered with a protective soil[J]. In Proceedings of Geosynthetics'93, 1993:1403-1412.
[12]	Pandey L M S, Shukla S K, HABIBI D. Resistivity profiles of Perth soil in Australia in leak-detection test[J]. Geotechnical Research, 2017,4:214-221.
[13]	能昌信,管绍朋,董路.填埋场渗漏检测偶极子法的影响因素分析[J]. 环境科学研究, 2008,(6):35-38. Nai C X, Guan S P, Dong L. Factor affecting the dipole method for landfill leakage detection[J]. Research of Environmental Sciences, 2008,(6):35-38.
[14]	能昌信,董路,王琪.双衬层填埋场渗漏检测电极铺设方式研究[J]. 环境科学研究, 2005,(S1):74-76. Nai C X, Dong L, Wang Q. The effect of electrodes lay mode in leakage location of double liner landfill[J]. Research of Environmental Sciences, 2005,(S1):74-76.
[15]	杨萍,能昌信,董路,等.高压直流电法2种双人工合成衬层模拟填埋场渗漏检测的比较[J]. 环境科学, 2006,(1):181-183. Yang P, Nai C X, Dong L, et al. Comparison of two types of double-lined simulated landfill leakage detection based on high voltage DC Method[J]. Environmental Sciences, 2006,(1):181-183.
[16]	能昌信,孙新宇,徐亚,等.垂直HDPE膜安装过程的电学破损检测方法[J]. 环境工程学报, 2018,12(1):349-355. Nai C X, Sun X Y, Xu Y, et al. Electrical method to locate damage in vertical HDPE geomembrane during installation[J]. Chinese Journal of Environmental Engineering, 2018,12(1):349-355.
[17]	能昌信,孙新宇,徐亚,等.电法在垂直柔性防渗帷幕破损检测的应用[J]. 环境科学与技术, 2018,41(3):151-155. Nai C X, Sun X Y, Xu Y, et al. Electrical method used in leakage detection of vertical flexible anti-seepage curtain[J]. Environmental Science & Technology, 2018,41(3):151-155.
[18]	Mor S, Ravindra K, Dahiya R P, et al. Leachate Characterization and Assessment of Groundwater Pollution Near Municipal Solid Waste Landfill Site[J]. Environmental Monitoring and Assessment, 2006, 118:435-456.
[19]	Kapelewska J, Kotowska U, Karpińska J, et al. Water pollution indicators and chemometric expertise for the assessment of the impact of municipal solid waste landfills on groundwater located in their area[J]. Chemical Engineering Journal, 2019,359:790-800.
[20]	Lv L L, Qu J H, Yu Z H, et al. A simple method for detecting and quantifying microplastics utilizing fluorescent dyes-Safranine T, fluorescein isophosphate, Nile red based on thermal expansion and contraction property[J]. Environmental Pollution, 2019,255:113283.
[21]	Lange J, Olsson O, Sweeney B, et al. Fluorescent tracers to evaluate pesticide dissipation and transformation in agricultural soils[J]. Science of The Total Environment, 2018,619-620:1682-1689.
[22]	Schiperski F, Oertwich M, Scheytt T. Solubility of TINOPAL CBS-X fluorescent dye at different EDTA concentrations and pH values:Implications regarding its applicability in field tracer tests[J]. Journal of Hydrology, 2019,578:124025.
[23]	Latrille C, Wissocq A, Beaucaire C, et al. Simulation of Sr Transport in Soil Column[J]. Procedia Earth and Planetary Science, 2017,17:476-479.
[24]	Dibyanshu, Raychoudhury T. Co-transport behavior of nano-ZnO particles in the presence of metal-nanoparticles through saturated porous media[J]. Journal of Environmental Chemical Engineering, 2019,7:103103.
[25]	周小松,张建山,杨晓鹏,等.加勒比海海边某基坑工程抽水试验实施与分析[J]. 水利学报, 2015,46(S1):209-213. Zhou X S, Zhang J S, Yang X P, et al. The Caribbean sea of a foundation pit engineering implementation and analysis of pumping test[J]. Journal of Hydraulic Engineering, 2015,46(S1):209-213.
[26]	Battaglia D, Birindelli F, Rinaldi M, et al. Fluorescent tracer tests for detection of dam leakages:The case of the Bumbuna dam-Sierra Leone[J]. Engineering Geology, 2016,205:30-39.
[27]	毛书帅.三种抗生素和铜单一及复合污染对土壤酶和微生物群落功能多样性的影响[D]. 泰安:山东农业大学, 2016. Mao S S. Single and joint Toxicity of three kinds of antibiotics and copper on soil enzyme activity and microbial community function diversity[D]. Taian:Shandong Agricultural University, 2016.