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Effects of intermediate principal stress on rock cavity stability

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Abstract

The linear Mohr-Coulomb and nonlinear Hoek-Brown failure criteria, which neglect the effects of intermediate principal stress, are widely used in soil and rock engineering. However, much experimental data shows that the failure envelope relates to the intermediate principal stress. Employing the failure criterion and the generalized plastic potential function, the stability of rock cavity driven in an isotropic and homogeneous medium was investigated under the condition of plane strain considering the effects of intermediate principal stress. The closed-form solutions for stresses and displacement around a rock cavity were given in the elastic and plastic zones. Based on the closed-form solutions, the intermediate principal stress has an important effect on cavity stability.

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Authors and Affiliations

  1. School of Civil and Architectural Engineering, Central South University, Changsha, 410075, China

    Yang Xiao-li  (杨小礼), Zou Jin-feng  (邹金锋) & Sui Zhi-rong  (眭志荣)

Authors
  1. Yang Xiao-li  (杨小礼)
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  2. Zou Jin-feng  (邹金锋)
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  3. Sui Zhi-rong  (眭志荣)
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Corresponding author

Correspondence to Yang Xiao-li  (杨小礼).

Additional information

Foundation item: Project (200631878557) supported by West Traffic of Science and Technology; Project (50408020) supported by National Natural Science Foundation of China

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Yang, Xl., Zou, Jf. & Sui, Zr. Effects of intermediate principal stress on rock cavity stability. J Cent. South Univ. Technol. 14 (Suppl 1), 165–169 (2007). https://doi.org/10.1007/s11771-007-0237-3

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  • DOI: https://doi.org/10.1007/s11771-007-0237-3

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