... Abstract The effect of meso-structure heterogeneity in material on the mechanical behavior of rock is studied in this paper, using Discrete Element Method and Weibull distribution model. Several triaxial compressive tests are conducted. Different meso-structure distributions are used...

... relationships between the permeability and mechanical behavior are also established. However, the works carried out mainly concentrated on the impact of macroscopic behavior of rock sample, like deformation and stress condition. Few attentions have been paid on the damage evolution process, which is actually...

... behavior of intact rock, the spatial configuration of joint sets, and mechanical behavior of the joint plane on the non-linear behavior of a rock mass, this manuscript reveals the joint-induced anisotropy in failure zone and deformation surrounding a tunnel. The support effects of a rockbolt are generally...

... and induced anisotropy is carefully addressed and discussed. A series of numerical simulations are performed in order to check the predictive performance of the proposed model. Comparisons between numerical results and test data show the present model is capable of describing the main mechanical behaviors...

.... In this paper, the model size of 30m × 30m was analyzed by using the fracture geometry from two tunnel sites. PFC simulations were carried out to examine the mechanical behavior of rock masses. From the numerical tests, it can be concluded that as the number of joint sets increased, the values of mechanical...