›› 2006, Vol. 27 ›› Issue (11): 1997-2000.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Analysis of influence of discontinuous plane on strength of rock mass based on unified strength theory

LI Hang-zhou1, LIAO Hong-jian1,2, FENG Xia-ting2, LENG Xian-lun1   

  1. 1.Department of Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China; 2.Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2005-01-24 Online:2006-11-10 Published:2013-12-04

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Abstract: Based on unified strength theory, considering condition of plane style of rock mass with discontinuous plane, the unified strength formulation for strength of rock mass with single joint, i.e. failure criterion of rock mass of considering the intermediate principal stress, is derived by introducing unified strength parameters ct and φt of material; and the effective range of formulation is analyzed. The proposed formulation is verified by triaxial experiments of diatomaceous soft rock and gypsum; and the change of strength of rock mass with the variation of parameter b of intermediate principal shear stress is analyzed; and the results show that the strength increases with the increasing of parameter b. The parameters ct and φt are calculated and analyzed in term of determination method of parameters ct and φt of geomaterial; and note that they change with parameter b.

Key words: unified strength theory, discontinuous plane, strength of rock mass

CLC Number: 

  • TU 452
  • 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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