scholarly journals Seismic response of rock joints and jointed rock mass

1996 ◽  
Author(s):  
A. Ghosh ◽  
S.M. Hsiung ◽  
A.H. Chowdhury
Keyword(s):  
Rock Mass ◽  
Seismic Response ◽  
Jointed Rock ◽  
Jointed Rock Mass ◽  
Rock Joints

Dynamic Response of Intermittent Jointed Rock Mass Subjected to Blast Waves

2006 ◽  
Vol 306-308 ◽  
pp. 1415-1420
Author(s):  
Peng Shao ◽  
Yong Zhang ◽  
Wen Ming Gao ◽  
Yong Qiang Liu
Keyword(s):  
Rock Mass ◽  
Crack Initiation ◽  
Dynamic Response ◽  
Jointed Rock ◽  
Static Field ◽  
Jointed Rock Mass ◽  
Blast Waves ◽  
Rock Joints ◽  
Rock Masses ◽  
Linear Superposition

The propagation of blast waves in intermittent jointed rock masses will result in a complex interaction between propagating waves and rock joints. Such being the case, the analysis of dynamic response of rock masses is important to rock engineering design and stability prediction. In this paper, the fracture process of intermittent jointed rock mass subjected to blast waves and initial static field, including wing crack initiation, propagation and arrest, is analyzed using linear superposition principle and sliding crack model. Crack initiation conditions and propagation lengths under incident P-waves is put forward, and the kinking effect of propagating wing cracks subjected to S-wave is also discussed. Additional, it is demonstrated that crack arrest is controlled by static field. In order to validate the correctness of dynamic response analysis, experimental investigations were performed using lucite specimens, and the experimental results show good agreement with the analytical results.

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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