A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Coupled Mechanical Consolidation and Contaminant Transport Modelling of Composite Barrier Systems: A Parametric Sensitivity Analysis
This paper presents the results from an extensive parametric sensitivity analysis of coupled consolidation and solute transport in composite landfill liner systems. Analyses investigate various model parameters including waste loading rate, initial void ratio, compression index, hydraulic conductivity and thickness of the clay liner. Identification of dimensionless quantities characterizing transport and consolidation behaviour allows representation and comparison of a large amount of numerical data in compact form. Utilizing this approach, we could identify the key determinants governing contaminant transport through liner systems. Numerical results reveal that in cases of high liner compressibility, an order of magnitude reduction in contaminant transit time relative to a diffusion analysis may arise due to coupling between solute transport and consolidation. The results suggest that use of coupled consolidation-contaminant transport model is required for conservative design of engineered landfill liner systems.
Coupled Mechanical Consolidation and Contaminant Transport Modelling of Composite Barrier Systems: A Parametric Sensitivity Analysis
This paper presents the results from an extensive parametric sensitivity analysis of coupled consolidation and solute transport in composite landfill liner systems. Analyses investigate various model parameters including waste loading rate, initial void ratio, compression index, hydraulic conductivity and thickness of the clay liner. Identification of dimensionless quantities characterizing transport and consolidation behaviour allows representation and comparison of a large amount of numerical data in compact form. Utilizing this approach, we could identify the key determinants governing contaminant transport through liner systems. Numerical results reveal that in cases of high liner compressibility, an order of magnitude reduction in contaminant transit time relative to a diffusion analysis may arise due to coupling between solute transport and consolidation. The results suggest that use of coupled consolidation-contaminant transport model is required for conservative design of engineered landfill liner systems.
Coupled Mechanical Consolidation and Contaminant Transport Modelling of Composite Barrier Systems: A Parametric Sensitivity Analysis
Lewis, T. W. (author) / Pivonka, P. (author) / Smith, D. W. (author) / Fityus, S. G. (author)
GeoCongress 2008 ; 2008 ; New Orleans, Louisiana, United States
GeoCongress 2008 ; 1-8
2008-03-07
Conference paper
Electronic Resource
English
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