›› 2003, Vol. 24 ›› Issue (1): 127-129.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Finite element analyses for influence of embedded depth of an underground opening on double-nonlinearity of surrounding rockmass

ZHANG Yu-jun1, LIU Yi-ping2   

  1. 1. Key Laboratory of Rock and soil Mechanics, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China ; 2. Institute of physics and mathematics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2001-11-17 Online:2003-02-10 Published:2014-08-27

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Abstract: The finite-element method with small deformation formulation as well as the large deformation formulation, is used to perform elastoplastic analyses of an underground opening with different embedded depths, and investigate the plastic zones, displacement distributions and secondary stress fields in the surrounding rockmass. It can be seen that when the embedded depth is small the computations obtained from small deformation and large deformation methods are quite close to each other, but when the embedded depth is larger , there exists a distinct difference between the results of the two methods because the double-nonlinearity of surrounding rockmass acts obviously at this time , so for the latter case, the right selection is applying the large deformation theory.

Key words: underground opening, surrounding rockmass, embedded depth, double-nonlinearity, finite element analysis

CLC Number: 

  • TU 457
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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