Study on Mechanism of Propagation of Consolidated Jointed Rock Mass

Zhong Chang Wang

doi:10.4028/www.scientific.net/AMR.179-180.703

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 179-180Study on Mechanism of Propagation of Consolidated...

Study on Mechanism of Propagation of Consolidated Jointed Rock Mass

Abstract:

To obtain failure characteristic of jointed rock mass, the propagation mechanism of twin collinear cracks with different angle is simulated by finite element under different consolidated condition. The change laws of stress strength gene, the slipping displacement of middle nodes of faces of crack, shear strain and plastic strain near crack tip is derived under different consolidated condition. It is shown that the consolidation role is the evident and the stress concentration is weakened when the inclination angle of crack is in range of 30°-60°. The corresponding value under consolidated condition is smaller than that under without consolidated condition. The slipping displacement of middle points of crack faces in y direction is mainly. The slipping displacement in y direction decreases and the slipping displacement in x direction increases with the increases of the inclination angle of crack. The compressive effect is bigger than that the shear effect.

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Periodical:

Advanced Materials Research (Volumes 179-180)

Pages:

703-706

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.179-180.703

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Online since:

January 2011

Authors:

Zhong Chang Wang

Keywords:

Consolidated Jointed Rock Mass, Crack with Different Angle, Plastic Strain, Slipping Displacement, Stress Strength Gene

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