scholarly journals Numerical Study on Crack Propagation in Brittle Jointed Rock Mass Influenced by Fracture Water Pressure

Materials ◽  
2015 ◽  
Vol 8 (6) ◽  
pp. 3364-3376 ◽  
Author(s):  
Yong Li ◽  
Hao Zhou ◽  
Weishen Zhu ◽  
Shucai Li ◽  
Jian Liu
Keyword(s):  
Rock Mass ◽  
Crack Propagation ◽  
Numerical Study ◽  
Water Pressure ◽  
Jointed Rock ◽  
Jointed Rock Mass

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

scholarly journals A Model of Anisotropic Property of Seepage and Stress for Jointed Rock Mass

2013 ◽  
Vol 2013 ◽  
pp. 1-19 ◽  
Author(s):  
Pei-tao Wang ◽  
Tian-hong Yang ◽  
Tao Xu ◽  
Qing-lei Yu ◽  
Hong-lei Liu
Keyword(s):  
Rock Mass ◽  
Stress Field ◽  
Underground Mining ◽  
Principal Direction ◽  
Water Pressure ◽  
Jointed Rock ◽  
Jointed Rock Mass ◽  
Surrounding Rock ◽  
Metal Mine ◽  
Roadway Stability

Joints often have important effects on seepage and elastic properties of jointed rock mass and therefore on the rock slope stability. In the present paper, a model for discrete jointed network is established using contact-free measurement technique and geometrical statistic method. A coupled mathematical model for characterizing anisotropic permeability tensor and stress tensor was presented and finally introduced to a finite element model. A case study of roadway stability at the Heishan Metal Mine in Hebei Province, China, was performed to investigate the influence of joints orientation on the anisotropic properties of seepage and elasticity of the surrounding rock mass around roadways in underground mining. In this work, the influence of the principal direction of the mechanical properties of the rock mass on associated stress field, seepage field, and damage zone of the surrounding rock mass was numerically studied. The numerical simulations indicate that flow velocity, water pressure, and stress field are greatly dependent on the principal direction of joint planes. It is found that the principal direction of joints is the most important factor controlling the failure mode of the surrounding rock mass around roadways.

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.

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