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填埋场污染物在有限厚度土层中一维对流-扩散-吸附解析解

张文杰, 黄依艺, 张改革

张文杰, 黄依艺, 张改革. 填埋场污染物在有限厚度土层中一维对流-扩散-吸附解析解[J]. 岩土工程学报, 2013, 35(7): 1197-1201.
引用本文: 张文杰, 黄依艺, 张改革. 填埋场污染物在有限厚度土层中一维对流-扩散-吸附解析解[J]. 岩土工程学报, 2013, 35(7): 1197-1201.
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ZHANG Wen-jie, HUANG Yi-yi, ZHANG Gai-ge. Analytical solution for 1D advection-diffusion-adsorption transport of landfill contaminants through a soil layer with finite thickness[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(7): 1197-1201.
Citation: ZHANG Wen-jie, HUANG Yi-yi, ZHANG Gai-ge. Analytical solution for 1D advection-diffusion-adsorption transport of landfill contaminants through a soil layer with finite thickness[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(7): 1197-1201.
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填埋场污染物在有限厚度土层中一维对流-扩散-吸附解析解  English Version

  • 上海大学土木工程系，上海 200072

基金项目: 国家自然科学基金项目（51178260）
详细信息
    作者简介:

    张文杰(1978- )，男，山东青岛人，博士，副教授，从事环境土工方面的研究。E-mail: wjzhang2008@ gmail.com。

  • 中图分类号: TU43

Analytical solution for 1D advection-diffusion-adsorption transport of landfill contaminants through a soil layer with finite thickness

  • Department of Civil Engineering, Shanghai University, Shanghai 200072, China

摘要

    摘要
  • 摘要: 为避免垃圾填埋场对地下水的污染，衬垫系统的截污性能至关重要。针对卫生垃圾填埋场衬垫底部设有地下水导排层的工程要求，建立了污染物在有限厚度土层中一维对流-扩散-吸附解析模型并求解，其中模型底部采用Cauchy边界模拟渗滤液污染物透过衬垫向零浓度环境传质。算例结果表明，解析解与商用软件数值解所得浓度场分布完全吻合；参数分析表明，吸附、扩散和对流参数对击穿曲线均有较大影响，为延长击穿时间，应尽可能采用吸附性能好的土层并严格控制衬垫上的水头高度。
    Abstract: Performance of liner systems is very important to prevent groundwater contamination by landfills. In accordance with the case that groundwater drainage layers are built beneath the liner systems in sanitary landfills, a 1D analytical model for advection-diffusion-adsorption process of contaminants through a soil layer with finite thickness is proposed. Cauchy boundary is adopted to simulate the mass migration to a zero concentration circumstance. The results show that the analytical solution coincides well with that of a commercial numerical software. The analytical solution is reasonable and accurate. Parametric analyses show that adsorption, diffusion and advection all have great influence on the breakthrough curves. To improve the performance of clayey liners, the soil layer with high adsorption ability is suggested, and leachate head need to be strictly controlled.
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  • 收稿日期:  2012-09-17
  • 发布日期:  2013-07-16

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