Fig. 10From: Triaxial testing and hydraulic–mechanical modeling of sandstone reservoir rock in the Upper Rhine GrabenMaximum differential stress of the different sandstones types PfSst (blue), TenSst (red) and VsSst (green). The results are compared with the criteria of Drucker and Prager (1952), Khan et al. (1991) and the concept of CSL (Rutter and Glover 2012) in normalized q–p spaceBack to article page