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Macro and meso analysis of jointed rock mass triaxial compression test by using equivalent rock mass (ERM) technique

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Abstract

Methods that can efficiently model the effects of rock joints on rock mass behavior can be beneficial in rock engineering. The suitability of equivalent rock mass (ERM) technique based upon particle methods is investigated. The ERM methodology is first validated by comparing calculated and experimental data of lab triaxial compression test on a set of cylindrical rock mass samples, each containing a single joint oriented in various dip angles. The simulated results are then used to study the stress-strain nonlinearity and failure mechanism as a function of the joint dip angle and confining stress. The anisotropy and size effects are also investigated by using multi-scale cubic ERM models subjected to triaxial compression test. The deformation and failure behavior are found to be influenced by joint degradation, the micro-crack formation in the intact rock, the interaction between two joints, and the interactions of micro-cracks and joints.

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Authors and Affiliations

  1. Key Laboratory for Efficient Mining and Safety of Metal Mine of Ministry of Education of China, University of Science and Technology Beijing, Beijing, 100083, China

    Yu Zhou  (周喻), Shun-chuan Wu  (吴顺川) & Yong-tao Gao  (高永涛)

  2. School of Engineering, University of Kansas, Kansas City, KS, 66045-7609, USA

    Yu Zhou  (周喻) & A. Misra

Authors
  1. Yu Zhou  (周喻)
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  2. Shun-chuan Wu  (吴顺川)
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  3. Yong-tao Gao  (高永涛)
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  4. A. Misra
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Corresponding author

Correspondence to Shun-chuan Wu  (吴顺川).

Additional information

Foundation item: Projects(51074014, 51174014) supported by the National Natural Science Foundation of China

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Zhou, Y., Wu, Sc., Gao, Yt. et al. Macro and meso analysis of jointed rock mass triaxial compression test by using equivalent rock mass (ERM) technique. J. Cent. South Univ. 21, 1125–1135 (2014). https://doi.org/10.1007/s11771-014-2045-x

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  • DOI: https://doi.org/10.1007/s11771-014-2045-x

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