PARAMETERS SENSITIVE ANALYSIS OF CONTAMINANT TRANSPORT IN DEFORMABLE SOIL

Soil deformation plays an important impact on contaminant transport. In order to fully study the influence of parameters on contaminant transport in the deformable soil, this paper presented an approach to study how contaminant transport is affected by deformable soil parameters such as porosity, hydraulic conductivity and hydrodynamic dispersion coefficient. Formulation of the mathematical model considers a small landfill as case study, the soil response is based on biot's consolidation theory, while the contaminant transport is simulated with the solute transport theory in which it is accounted for diffusion, convection and dispersion contributions. The parameters sensitivity analysis is approached with the Morris-law method. Obtained results show that hydraulic conductivity has a significant influence on contaminant transport. Additionally, there are three parameters porosity, adsorption coefficient and longitudinal dispersivity, which are of major concern in the simulation of contaminant transport in deformable soil.