Stability analysis of rock slopes with a modified Hoek-Brown failure criterion

Xiao Li Yang, Liang Li, Jianhua Yin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

90 Citations (Scopus)


The original Hoek-Brown (HB) failure criterion was used to analyse the stability of rock slopes. For highly fractured rock, the original HB failure criterion has been modified, but its effect on the stability of rock slopes has not been studied. Within the framework of the kinematical approach of limit analysis, this paper computes the rigorous upper bounds of stability factors of homogeneous rock slopes with the modified HB failure criterion under the plane strain condition, by employing a 'generalized tangential' technique. In such technique, instead of using the modified HB failure criterion, a series of linear failure surfaces tangent to the actual non-linear failure surface are utilized to derive the upper bound solutions, incorporating a new parameter n ranging from 0.5 to 0.65. The numerical results are compared with other published solutions for the case of n = 0.5. The effects of the n on the stability factors of rock slopes are discussed.
Original languageEnglish
Pages (from-to)181-190
Number of pages10
JournalInternational Journal for Numerical and Analytical Methods in Geomechanics
Issue number2
Publication statusPublished - 1 Feb 2004


  • Limit analysis
  • Modified Hoek-Brown failure criterion
  • Rock slope
  • Stability

ASJC Scopus subject areas

  • Computational Mechanics
  • Materials Science(all)
  • Geotechnical Engineering and Engineering Geology
  • Mechanics of Materials


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