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:侧压系数对圆孔周边松动区破坏模式影响的数值试验研究
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Date of Publication:2009-02-10
Journal:岩土力学
Included Journals:EI、PKU、ISTIC、CSCD、Scopus
Volume:30
Issue:2
Page Number:413-418
ISSN No.:1000-7598
Key Words:圆孔;地应力;松动区;侧压系数;数值模拟
Abstract:利用岩石破裂过程分析软件RFPA2D,对岩体中的圆孔周边的变形及非线性渐进破坏特征、巷道周边关键部位的应力变化进行了分析,研究了应力场中侧压力系数对围岩应力场分布的影响.研究指出,侧压系数对应力场分布及圆孔周边松动区的破坏特征起决定作用.当≤1时,顶板的塑性区和卸压范围较大,但顶板挠度却较小;当时,顶板的塑性区和卸压范围较小,但顶板挠度却较大.对于进一步深入理解深部岩体中巷道破坏失稳机制并采取有效的加固措施等具有重要的理论和实践意义.
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