›› 2006, Vol. 27 ›› Issue (4): 509-513.

• Fundamental Theroy and Experimental Research •     Next Articles

Three-dimensional expanded Cosserat medium constitutive model for laminated salt rock

LI Yin-ping, YANG Chun-he   

  1. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2005-07-22 Online:2006-04-10 Published:2013-11-05

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Abstract: Based on two-dimensional Cosserat constitutive model for layered rockmass, a new three-dimensional expanded Cosserat medium constitutive model, in which the influence of meso bending was taken into account, was proposed for layered salt rock containing two alternate layers with mismatch mechanical properties. It was validated primarily by an experiment on laminated salt rock samples under uniaxial compression. By using this new model, it can be analyzed the influence on stiffness of layered salt rock of the presence of hard or soft interlayer and also the macroscopical isotropy of layered salt rock due to interlayer. Combined with conventional strength theories, this model can be utilized further through a routine way for the strength and failure analysis. The proposed model can be expanded to solve nonlinear problems directly, and can be embedded to numerical analytical software for analysis of the stability of complicated underground openings in laminated salt rock.

Key words: Cosserat medium, laminated salt rock, heterogeneity, coordination of displacement, constitutive model

CLC Number: 

  • TU 454
  • 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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