Chunyang Zhang

TL;DR: Wang et al. as discussed by the authors adopted the method of steel fiber-reinforced shotcrete to improve the excavation rate of roadways and guarantee the safety of the tunnel when it passes through unfavorable geological bodies, such as shale rocks and broken argillaceous limestone.

TL;DR: In this paper, the peak shear strength and failure processes of specimens with multiple joints are studied by lab testing and particle flow code (PFC2D), and four types of failure modes are observed: (a) shear failure through a plane (Mode-I), (b) intact shear failures (Mode II), (c) oblique shear crack connection failure (Mode III), and (d) stepped path failure (mode-IV).

TL;DR: In this paper, an elasto-visco-plastic model based on stress functions is proposed, which consists of the elastic, viscoelastic and viscoplastic submodels.

TL;DR: In this paper, the propagation mechanism of an oblique straight crack has been studied theoretically, which reveals its mechanical characteristics under in-plane biaxial compression, and the effect of stresses on the strength of cracked rocks is discussed.

TL;DR: In this article, the authors discuss the development and the contribution of the experiment test and numerical simulation in failure behavior of jointed rock or rock-like specimens and discuss the experimental and numerical studies on the strength, deformation, and failure characteristics of joints or fissures.