Numerical study of thermo-hydro-mechanical responses of in situ heating test with phase-field model

This study is part of numerical simulations performed on an in situ heating test conducted by the French National Radioactive Waste Management Agency (Andra) at Meuse/Haute-Marne Underground Research Laboratory (URL) to thermal-hydromechanical behavior host Callovo-Oxfordian COx claystone quasi real conditions, through international research project DECOVALEX. The emphasis put pore pressure increase generated heat released from high level radioactive waste and consequence damage evolution rock. A phase-field method proposed describe damaged zones around borehole. Both tensile shear cracks are taken into account. coupled with temperature variation, rock deformation, fluid change. Moreover, structural anisotropy elastic properties, permeability, conductivity Numerical results compared in-situ measurements.