Coupled thermo-hydro-mechanical behaviour of soils and applications in energy geotechnics
Résumé
With the rise of energy geo-engineering, the temperature effects on the behaviour of geomaterials have gained a strong attention in geotechnical research and engineering applications in the past couple of decades. Many applications are con- cerned, ranging from thermo-active geostructures, radioactive waste disposals, gas and energy storage in geological reservoirs, landscape evolution studies, etc. In this paper, we present a brief overview of thermo-hydro-mechanical behaviour features of geomaterials, mainly focusing on the mechanical behaviour at the material scale or at the soil-structure interface scale, on the hydraulic behaviour and on the thermal behaviour of geomaterials. We also discuss key issues regarding the thermo-hydro- mechanical constitutive modelling of soils and considerations about the modelling of this coupled behaviour as opposed to sim- plified approaches usually considered in geotechnical engineering. We finally brush an overview of recent advances in some engineering applications where the thermo-hydro-mechanical behaviour of geomaterials plays a fundamental role.
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