Numerical Study of the Influence of Joint Angle on the Failure Behavior of Randomly and Nonpersistently Jointed Rock Mass

2020 ◽  
Vol 45 (5) ◽  
pp. 4023-4036
Author(s):  
Wenqiang Ma ◽  
Tongxu Wang
Keyword(s):  
Rock Mass ◽  
Joint Angle ◽  
Numerical Study ◽  
Jointed Rock ◽  
Jointed Rock Mass ◽  
Failure Behavior

Stress-dependent anisotropy index of strength and deformability of jointed rock mass: insights from a numerical study

2019 ◽  
Vol 78 (8) ◽  
pp. 5905-5917 ◽  
Author(s):  
Na Wu ◽  
Zheng-zhao Liang ◽  
Ying-chun Li ◽  
Hong Li ◽  
Wan-run Li ◽  
...  
Keyword(s):  
Rock Mass ◽  
Numerical Study ◽  
Jointed Rock ◽  
Jointed Rock Mass ◽  
Anisotropy Index ◽  
Stress Dependent

Numerical Study on Tunnel Mechanics in Jointed Rock Mass with Finite Element Method

2011 ◽  
Vol 99-100 ◽  
pp. 790-795
Author(s):  
Ming Gao Zhang ◽  
Heng Bin Wu ◽  
Ze Ping He ◽  
Ting Qiang Zhou
Keyword(s):  
Finite Element ◽  
Rock Mass ◽  
Plastic Zone ◽  
Lateral Pressure ◽  
Numerical Study ◽  
Pressure Coefficient ◽  
Jointed Rock ◽  
Jointed Rock Mass ◽  
Lateral Pressure Coefficient ◽  
Element Method

Tunnel mechanics mainly depend on joints properties in layered and jointed rock mass, and most of the present methods adopted in numerical analysis are distinct element method. Combining to the Gaixiaba tunnel, considering the jointed properties such as dip angles, distances and lateral pressure coefficient, the finite element models are made in this paper. Results show that the plastic zone and total displacement presented a symmetric distribution with the axial of joints dip, and the plastic zone is very similar to the results suggested by Goodman. The dip angles, distances of joints and lateral pressure coefficient have significant effect on the tunnel mechanics.

Failure behavior and crack evolution mechanism of a non-persistent jointed rock mass containing a circular hole

2019 ◽  
Vol 114 ◽  
pp. 101-121 ◽  
Author(s):  
Sheng-Qi Yang ◽  
Peng-Fei Yin ◽  
Yuan-Chao Zhang ◽  
Miao Chen ◽  
Xiao-Ping Zhou ◽  
...  
Keyword(s):  
Rock Mass ◽  
Circular Hole ◽  
Jointed Rock ◽  
Jointed Rock Mass ◽  
Failure Behavior ◽  
Crack Evolution ◽  
Evolution Mechanism

scholarly journals Crack Initiation, Propagation, and Failure Characteristics of Jointed Rock or Rock-Like Specimens: A Review

2019 ◽  
Vol 2019 ◽  
pp. 1-31 ◽  
Author(s):  
Ri-hong Cao ◽  
Ping Cao ◽  
Hang Lin ◽  
Xiang Fan ◽  
Chunyang Zhang ◽  
...  
Keyword(s):  
Rock Mass ◽  
Crack Initiation ◽  
Failure Modes ◽  
Failure Process ◽  
Jointed Rock ◽  
Jointed Rock Mass ◽  
Failure Behavior ◽  
Failure Characteristics ◽  
Deformation And Failure ◽  
Natural Rock

Rock masses are heterogeneous materials containing a large number of discontinuities, and the failure of the natural rock mass is induced by the crack propagation and coalescence of discontinuities, especially for the rock mass around tunnel or underground space. Because the deformation or failure process of jointed rock mass exhibits strongly nonlinear characteristics, it is also very difficult to predict the strength and failure modes of the rock mass. Therefore, it is very necessary to study the failure mechanisms of jointed rock mass under different stress conditions. Apart from the stress condition, the discontinuities geometry also has a significant influence on the mechanical behavior of jointed rock mass. Then, substantial, experimental, and numerical efforts have been devoted to the study of crack initiation, propagation, and coalescence of rock or rock-like specimens containing different kinds of joints or fissures. The purpose of this review is to discuss the development and the contribution of the experiment test and numerical simulation in failure behavior of jointed rock or rock-like specimens. Overall, this review can be classified into three parts. It begins by briefly explaining the significance of studying these topics. Afterwards, the experimental and numerical studies on the strength, deformation, and failure characteristics of jointed rock or rock-like materials are carried out and discussed.

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