New numerical modelling of the mechanical long-term behaviour of the GMR gallery in ANDRA's Underground Research Laboratory

► Study of the mechanical long-term behaviour of ANDRA's URL in France ► GMR gallery: dissymmetry between horizontal and vertical convergence measurements ► Use of Lemaître's creep law including a volume variation in the viscoplastic strain ► Validation through FEM modelling ► Satisfactory results when the stress field around the gallery is anisotropic.