Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates
Main positions: President of international exchange committee of the Chinese Society of Rock Mechanics and Engineering CSRME
Other Post: Vice President of the Chinese Society of Rock Mechanics and Engineering CSRME
Title of Paper:NUMERICAL SIMULATION ON MECHANISM OF CIRCULAR LANEWAY LOOSE ROCK ZONE
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Date of Publication:2006-01-01
Included Journals:CPCI-S
Page Number:589-+
Key Words:Deep Rock Mass; Circular Roadway; Loose Rock Zone; Numerical Simulation
Abstract:Based on the heterogeneity of rock, by introducing the constitutive model based on damage mechanics and statistical theory and using the RFPA2D, the deformation and nonlinear gradual failure characteristics of circular roadway in deep rock mass as well as the displacement and the stress variation of the key position in the periphery of the roadway were analyzed, meanwhile, the mechanism of loose rock zone in the surrounding rock of the circular roadway was also studied. The study indicates that the stress concentration occurs in the periphery of the roadway after evacuation and plastic deformation zone engenders under the persisting stress of the surrounding rock, then the cracks appears and expands continuously, the loose fraction zone (loose rock zone) appears at last and the intensity of the stress concentration decreases as well as the stress field shifts beyond. This study is very useful and significant both on the theoretical and practical aspect.
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