华中科技大学学报（自然科学版）2024，Vol.52Issue(12)：158-167,10.DOI:10.13245/j.hust.241219
复合衬垫中一维土体固结与污染物运移全耦合模型研究
Study on fully coupled model for one-dimensional soil consolidation and contaminant transport in composite liner
摘要
Abstract
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.关键词
复合衬垫/土体固结/污染物运移/全耦合模型/模拟分析Key words
composite liner/soil consolidation/contaminant transport/fully coupled model/simulation analysis分类
资源环境引用本文复制引用
江文豪,冯晨,刘金都,李江山..复合衬垫中一维土体固结与污染物运移全耦合模型研究[J].华中科技大学学报（自然科学版）,2024,52(12):158-167,10.基金项目
国家重点研发计划资助项目(2019YFC1804002) （2019YFC1804002）
国家自然科学基金资助项目(42177163). （42177163）
