Progressive and retrogressive failure in discontinuous rock masses subjected to shear loading

1975 ◽  
Vol 12 (11) ◽  
pp. 154
Keyword(s):  
Shear Loading ◽  
Rock Masses ◽  
Discontinuous Rock

Physical Simulation Study on Transverse Effect of Bolted Discontinuous Rock Mass

2014 ◽  
Vol 1008-1009 ◽  
pp. 1292-1296
Author(s):  
Ying Xuan Jia ◽  
Hong Wei Song ◽  
Gui Zhang ◽  
Xing Kuang
Keyword(s):  
Rock Mass ◽  
3D Model ◽  
Physical Simulation ◽  
Shear Loading ◽  
New Findings ◽  
Bolt Stress ◽  
Negative Effect ◽  
Transverse Effect ◽  
Discontinuous Rock ◽  
Bolt Diameter

In order to illustrate the mechanism of supporting, maintain the safety and keep the stable of underground projects, it is of great significance to study the transverse effect of bolted discontinuous rock mass. With a 3D model and corresponding physical simulation, analyzing the testing results of the bolt stress, rock stress and displacement discovers some new findings. Besides its reinforcing effect to the rock mass, the bolt has a negative effect on the discontinuous rock mass by its so-called ‘railway effect’ under shear loading. The finding of this bolt function will help to further understand of bolting mechanism and it is very important to raise the safety of bolt supporting design. Furthermore the effect grade is a positive correlativity with the bolt diameter, and the shear displacement is one of its necessary conditions.

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