有机污染物在完好三层复合衬垫中的扩散分析

吴珣; 施建勇; 何俊

doi:10.11779/CJGE2015S1020

有机污染物在完好三层复合衬垫中的扩散分析 English Version

吴珣^{1, 2},
施建勇^{1, 2},
何俊³

1. 河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京 210098; 2. 河海大学岩土工程研究所,江苏南京 210098; 3. 湖北工业大学土木工程与建筑学院,湖北武汉 430068

基金项目: 国家自然科学基金项目（41372268 ,51008120）; 中央高校基本科研业务费专项资金项目（2014B33814）; 江苏省2014年度普通高校研究生科研创新计划项目（KYLX_0439）

详细信息

作者简介:
吴珣(1989- ),男,博士研究生,主要从事环境岩土工程方面的研究。

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出版历程
- 收稿日期: 2015-03-25
- 发布日期: 2015-07-24

Diffusion of organic contaminant through intact triple-layer liner

WU Xun^{1, 2},
SHI Jian-yong^{1, 2},
HE Jun³

1. Key of ministry of Education for Geomechanics and Embankment Engineering, Nanjing 210098, China; 2.Research Institute of Geotechnical Engineering, Hohai University, Nanjing, 210098, China; 3.College of Civil and Architectural Engineering, Hubei University of Technology, Wuhan 430068, China

摘要

摘要: 为了研究有机污染物在土工膜（GM）+土工复合膨润土衬垫（GCL）+土体保护层（AL）三层衬垫中运移规律,建立了有机污染物在GM+GCL+AL三层衬垫中的一维扩散模型。有机污染物在土工膜上的扩散假设为稳态运移,得到了模型的解析解。通过与已有解析解的比较计算,验证了该模型的合理性。基于文中模型,分析了AL的厚度对有机污染物在GM+GCL+AL三层衬垫中运移的影响并探讨了GM+GCL+AL衬垫与GM+CCL衬垫之间的等效性。结果表明增加AL的厚度可以有效减少GM+GCL+AL三层衬垫底部有机污染物通量。在文中的计算条件下,GM+GCL+2 m以上的AL衬垫可代替标准的GM+0.75 m CCL复合衬垫。
- 扩散 /
- 有机污染物 /
- 解析解 /
- 衬垫
Abstract: One-dimensional mathematical model for diffusion of organic contaminant through GM+GCL+AL composite liner is developed to investigate the behavior of organic contaminant transport in GM+GCL+AL composite liner. The diffusion of organic contaminant through GM is assumed to be a steady-state process. The analytical solution for the model is obtained. The results obtained by the proposed analytical solution are in good agreement with the previous analytical solutions. The effect of degradation in AL the diffusion of on organic contaminant is investigated on the basis of the proposed model. The equivalence between GM+GCL+AL and GM+CCL is discussed. The bottom flux of the GM+GCL+AL composite liner is reduced when the thickness of AL increases. The standard GM+0.75 m CCL can be replaced by a combination of a GM, a GCL and a more than 2 m thick AL under the proposed conditions.
- diffusion /
- organic contaminant /
- analytic solution /
- liner

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参考文献(14)

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