Study on fully coupled model for one-dimensional soil consolidation and contaminant transport in composite liner

被引：0

作者：

Jiang, Wenhao ^{[1
,2
,3
]}

Feng, Chen ^{[1
,2
]}

Liu, Jindu ^{[1
,2
]}

Li, Jiangshan ^{[1
,2
]}

机构：

[1] State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan

[2] University of Chinese Academy of Sciences, Beijing

[3] Zijin School of Geology and Mining, Fuzhou University, Fuzhou

来源：

Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2024年 / 52卷 / 12期

关键词：

composite liner; contaminant transport; fully coupled model; simulation analysis; soil consolidation;

D O I：

10.13245/j.hust.241219

中图分类号：

学科分类号：

摘要：

To investigate the fully coupled problem of one-dimensional soil consolidation and contaminant transport in geomembrane and compacted clay liner (GM+CCL) composite liner，the governing equations for soil consolidation and contaminant transport were respectively derived，and the fully coupled model was established by combining the corresponding solving conditions．In the coupled model，the interaction between soil consolidation and contaminant transport could be considered． The finite difference method was adopted to obtain the numerical solution for the coupled model．The correctness of the established coupled model was verified by comparing the calculation results of it with the calculation results of COMSOL software in different aspects．Based on the proposed coupled model，lead ion was used as a representative contaminant for simulation analysis．Results show that the contaminant transport accelerates the dissipation rate of excess pore water pressure during the consolidation process on the one hand，and reduces the settlement on the other hand．The consolidation of compacted clay liner reduces the parameters related to the transport process of contaminants，leading to the decrease of contaminant concentration and the bottom transport flux． © 2024 Huazhong University of Science and Technology. All rights reserved.

引用

页码：158 / 167

页数：9

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