Surrounding Rock Stress and Deformation Evolution Character Analysis of Circular Openings in Deep Underground Engineering
2011 ◽
Vol 418-420
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pp. 2001-2005
Keyword(s):
Hard rock generally performs ideal plastic character after the stress reaches its peak value with high confining pressure. Once the plastic strain satisfies certain condition, the brittle failure occurs, and the rock mass located in the residual region. Based on the mechanical model of hard rock under high confining pressure, we studied the surrounding rock stress and deformation evolution law of circular openings. The results shows that there is a significant end constraint effect at the opening face, and the deformation induced by disturbance is about one sixth of its total value. The results can provide theoritical foundation for deep underground engineer lining design.
2012 ◽
Vol 605-607
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pp. 210-214
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Keyword(s):
2014 ◽
Vol 1030-1032
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pp. 815-818
2012 ◽
Vol 170-173
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pp. 1735-1739
Keyword(s):
2012 ◽
Vol 616-618
◽
pp. 533-537
2013 ◽
Vol 868
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pp. 251-254
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2011 ◽
Vol 261-263
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pp. 1079-1083
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