..., as Mogi-Coulomb strength criterion can better describe the failure features of rocks under high geostress and rock micro-unit strength obeys the Weibull distribution, a new statistical damage constitutive model is established. Then, comparing the new model based on Mogi-Coulomb criterion with the Drucker...

... for several decades (Hunsche, 1984, Cristescu, 1996, Hampel, 1996). Several constitutive models have been constructed (Cristescu, 1993, Chan, 1996, Hou, 2003). Permeability values derived by laboratory measurements on undisturbed rock salt samples are generally less than 10 −20 m 2 (Schulze, 2001). Even...

... Abstract Based on a three-dimensional non-linear constitutive model, this study investigates the anisotropic deformation of a tunnel excavated in jointed rock masses and associate supporting effects of rockbolts. Using a numerical model capable of describing the influence of mechanical...

... variation Deformational Characteristic shear stress volumetric strain dilation loading constitutive model Upstream Oil & Gas sandstone moduli deformation behavior hydrostatic stress Reservoir Characterization anisotropic degradation weak sandstone volumetric deformation...

... constitutive model classical exponential model exponential model normal deformation constitutive model rock fracture fracture ISRM-Sponsored International Symposium on Rock Mechanics: Rock Characterisation, Modelling and Engineering Design Methods Improved elastic nonlinear normal deformation...

... ABSTRACT One of the difficulties in describing the rock mass behavior is assigning the appropriate constitutive model. This limitation may be overcome with the progress in discrete element software such as PFC, which does not need the user to prescribe a constitutive model for rock mass...