Research of Brittle Shear Failure Strength of Rock Materials

Yuan Li; Zhen Li; Tie Jun Xu

doi:10.4028/www.scientific.net/AMM.454.125

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 454Research of Brittle Shear Failure Strength of Rock...

Research of Brittle Shear Failure Strength of Rock Materials

Abstract:

In order to get brittle shear characteristics of rock material, acoustic emission accompanied with triaxial stress-strain test was applied to monitor the emergence and development of micro cracks. Theoretical analysis and data processing were conducted based on the theories of fracture mechanics and general rock mechanics, relations between the feature strength of three stages and the stress state were obtained, and a method was put forward for analyzing the brittle shear failure of rock material. The relationship of the Mohr-Coulomb strength theory, Griffith strength theory and Hoek-Brown criterion with the brittle-shear strength model were established. Strength analysis of mixed granite in Shuichang slope was carried out by the brittle shear failure model, and the theoretical value and experimental value has a good consistency.

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Periodical:

Applied Mechanics and Materials (Volume 454)

Pages:

125-128

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.454.125

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Online since:

October 2013

Authors:

Yuan Li, Zhen Li*, Tie Jun Xu

Keywords:

Acoustic Emission (AE), Brittle Shear Failure, Rock Mechanics, Strength Theory

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* - Corresponding Author

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