Progressive failure in stratified and jointed rock mass

1985 ◽  
Vol 18 (4) ◽  
pp. 267-292 ◽  
Author(s):  
Mustafa Gencer
Keyword(s):  
Rock Mass ◽  
Progressive Failure ◽  
Jointed Rock ◽  
Jointed Rock Mass

Study on Stability and Anchoring Effect of Jointed Rock Mass of An Underground Powerhouse

2004 ◽  
Vol 261-263 ◽  
pp. 1551-1556
Author(s):  
S.C. Li ◽  
Wei Zhong Chen ◽  
Wei Shen Zhu ◽  
X.B. Qiu ◽  
Chien Hsin Yang
Keyword(s):  
Rock Mass ◽  
Damage Evolution ◽  
Evolution Equations ◽  
Progressive Failure ◽  
Failure Process ◽  
Jointed Rock ◽  
Jointed Rock Mass ◽  
Surrounding Rock ◽  
Underground Powerhouse ◽  
Anchoring Effect

This present paper adopts a constitutive model for elastic damage of intermittently jointed rock mass, damage-evolution equations and a supporting model of damaged rock-bolt bar(DRBB) element to simulate effect of reinforcement. The results have indicated that the above method well describes the progressive failure process of the surrounding rock mass and the anchorage effect. The theoretical achievements are of referential value to designers.

Analysis of TBM Tunnel Behavior in Jointed Rock Mass

2011 ◽  
Vol 90-93 ◽  
pp. 2033-2036 ◽  
Author(s):  
Jin Shan Sun ◽  
Hong Jun Guo ◽  
Wen Bo Lu ◽  
Qing Hui Jiang
Keyword(s):  
Rock Mass ◽  
Numerical Models ◽  
Jointed Rock ◽  
In Situ Stress ◽  
Jointed Rock Mass ◽  
Joint Orientation ◽  
Joint Spacing ◽  
Factors Affecting ◽  
Dip Angle

The factors affecting the TBM tunnel behavior in jointed rock mass is investigated. In the numerical models the concrete segment lining of TBM tunnel is concerned, which is simulated as a tube neglecting the segment joint. And the TBM tunnel construction process is simulate considering the excavation and installing of the segment linings. Some cases are analyzed with different joint orientation, joint spacing, joint strength and tunnel depth. The results show that the shape and areas of loosing zones of the tunnel are influenced by the parameters of joint sets and in-situ stress significantly, such as dip angle, spacing, strength, and the in-situ stress statement. And the stress and deformation of the tunnel lining are influenced by the parameters of joint sets and in-situ stress, too.

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