低渗透性土柱对流-弥散迁移试验解析模拟边界适用性研究

曾兴; 詹良通; 陈云敏

doi:10.11779/CJGE201704007

低渗透性土柱对流-弥散迁移试验解析模拟边界适用性研究 English Version

曾兴;
1,詹良通;
2,陈云敏;
2

基金项目: 国家自然科学基金项目（51378466）

详细信息

作者简介:
曾兴(1987- ),男,湖南湘潭人,博士,主要从事环境岩土工程相关研究。E-mail: xzeng@zju.edu.cn。

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出版历程
- 收稿日期: 2016-01-07
- 发布日期: 2017-05-19

Applicability of boundary conditions for analytical modelling of advection-dispersion transport in low-permeability clay column tests

1. Hunan Provincial Key Laboratory of Geotechnical Engineering for Stability Control and Health Monitoring, Hunan University of Science and Technology, Xiangtan 411201, China;
2. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China

摘要

- 污染物迁移 /
- 边界条件 /
- 对流-弥散作用 /
- 低渗透性黏土
Abstract: The column tests on advection-dispersion are commonly used to measure the contaminant transport parameters in soils. The applicability of boundary conditions for analytical modelling of the column tests is under debate. The low-permeability kaolin column tests subjected to different hydraulic heads are conducted at 1g and under centrifuge conditions. The pore-water concentration profiles and the effluent concentration curves in the columns are obtained, and the applicability of boundary conditions for different scenarios is discussed. For the modelling of pore-water concentration profile in the low-permeability soil column, the continuous mass flux at the inlet boundary is better than the continuous concentration, and the combination of the continuous mass flux at the inlet boundary and the semi-infinite at the outlet boundary is recommended for the modelling of pore-water concentration profile. For the modelling of effluent concentration curve, the combination of the continuous concentration at the inlet boundary and the semi-infinite at the outlet boundary is better than other three combinations of boundary conditions, which is recommended for the modelling of effluent concentration curve.
- contaminant transport /
- boundary condition /
- advection-dispersion /
- low-permeability clay

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参考文献(26)

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