On the Effects of Parameters in a Nonlinear Thermo-Hydro-Mechanical Soil Model
Investigation on the thermo-hydro-mechanical behaviour of two-phase and multi-phase geomaterials is of a great importance in the problems of geotechnical and environmental engineering and more particularly in industrial, urban and nuclear waste disposals. The set of field equations of fully coupled thermo-hydro-mechanical behaviour of a saturated clayey engineering barrier based on the concept of the state surface of void ratio with a non-linear (hyperbolic) elastic response of the solid skeleton has been presented by (Gatmiri 1995). Study of the influence of different parameters on the thermo-hydro-mechanical response of soils in two dimensional case is the subject of this paper. Permeability, thermal conductivity and heat capacity of the medium seem to have a significant effect on the behaviour of the medium. It is concluded that the coefficient of permeability and the thermal conductivity have identical effects on the rate of consolidation, in such a way that the increase in their values causes an increase in the rate of consolidation. The contours of temperature, water pressure distribution and settlement at certain time steps after the application of loads with different values of heat capacity, thermal and hydraulic conductivity are presented.
KeywordsPore Pressure Void Ratio Pore Water Pressure Solid Skeleton Pore Pressure Distribution
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