Experimental Study on the Strength Failure Characteristics of Columnar Jointed Rock Masses under Three-Dimensional Stress

2021 ◽  
Author(s):  
Zhende Zhu ◽  
Wenbin Lu ◽  
Yanxin He ◽  
Xiangcheng Que
Keyword(s):  
Experimental Study ◽  
Three Dimensional ◽  
Jointed Rock ◽  
Rock Masses ◽  
Failure Characteristics ◽  
Jointed Rock Masses ◽  
Strength Failure

Experimental study on the mechanical properties of simulated columnar jointed rock masses

2014 ◽  
Vol 12 (1) ◽  
pp. 80-89 ◽  
Author(s):  
Wei-min Xiao ◽  
Rong-gui Deng ◽  
Zhi-bin Zhong ◽  
Xiao-min Fu ◽  
Cong-yan Wang
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Jointed Rock ◽  
Rock Masses ◽  
Jointed Rock Masses

scholarly journals A Simple Three-Dimensional Failure Criterion for Jointed Rock Masses under True Triaxial Compression

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Yaohui Gao ◽  
Chunsheng Zhang ◽  
Zhaofeng Wang ◽  
Jun Chen
Keyword(s):  
Failure Criterion ◽  
Triaxial Compression ◽  
Three Dimensional ◽  
Friction Angle ◽  
Failure Criteria ◽  
Jointed Rock ◽  
Rock Masses ◽  
True Triaxial ◽  
Jointed Rock Masses ◽  
Triaxial Strength

The joint configuration and the intermediate principal stress have a significant influence on the strength of rock masses in underground engineering. A simple three-dimensional failure criterion is developed in this study to predict the true triaxial strength of jointed rock masses. The proposed failure criterion in the deviatoric and meridian planes adopts the elliptic and hyperbolic forms to approximate the Willam–Warnke and Mohr–Coulomb failure criterion, respectively. The four parameters in the proposed failure criterion have close relationships with the cohesion and the internal friction angle and can be linked with the joint inclination angle using a cosine function. Two suits of true triaxial strength data are collected to validate the correctness of the proposed failure criterion. Compared with other failure criteria, the proposed failure criterion is more reasonable and acceptable to describe the strength of jointed rock masses.

Experimental Study on Fracture Behavior of Jointed Rock with Filled Crack in Uniaxial Compression

2011 ◽  
Vol 243-249 ◽  
pp. 2439-2442
Author(s):  
Ming Tian Li ◽  
Shu Cai Li ◽  
Dong Liang Shao
Keyword(s):  
Experimental Study ◽  
Thin Plate ◽  
Surface Crack ◽  
Fracture Behavior ◽  
Jointed Rock ◽  
Thin Plates ◽  
Surface Cracks ◽  
Rock Masses ◽  
Jointed Rock Masses ◽  
Made In

The influences of the ways in which the surface cracks were made and fillings in the surface cracks on the fracture behavior of the jointed rock masses were studied by a number of experiments. In the experiments the surface cracks were made in different methods such as placing polyester and aluminum thin plate, cutting. The experiment results show that the surface crack made by placing polyester thin plates and cutting may well simulate the natural cracks in jointed rock masses, but the specimens can’t initiate and fracture through the surface cracks formed by placing aluminum thin plate. In order to study the influences of the fillings in the cracks on the fracture behavior of the jointed rock masses polyester and aluminum thin plates were placed in the surface cracks to simulate different fillings. Compare with the surface crack without fillings those with fillings initiated and coalescence at a higher load. However the influences of fillings on the crack growth were very complex, which required to be studied further.

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