• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 28 Issue 6
Dec.  2015
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Article Contents
ZHANG Julian, SHEN Mingrong, LIANG Zhirong. Experimental Study on Shear Strength Characteristics of Irregular Rock Mass Discontinuities[J]. Journal of Southwest Jiaotong University, 2015, 28(6): 993-1000. doi: 10.3969/j.issn.0258-2724.2015.06.004
Citation: ZHANG Julian, SHEN Mingrong, LIANG Zhirong. Experimental Study on Shear Strength Characteristics of Irregular Rock Mass Discontinuities[J]. Journal of Southwest Jiaotong University, 2015, 28(6): 993-1000. doi: 10.3969/j.issn.0258-2724.2015.06.004

Experimental Study on Shear Strength Characteristics of Irregular Rock Mass Discontinuities

doi: 10.3969/j.issn.0258-2724.2015.06.004
  • Received Date: 24 Oct 2014
  • Publish Date: 25 Dec 2015
  • To study on mechanical properties of irregular discontinuities in rock mass engineering, conventional shear tests under different normal stress were carried out with No.1, 4, 6, 8, 10 standard discontinuities proposed by Barton, and simulated with cement mortar specimens. Based on experimental data analysis, shear characteristics and shear dilatancy phenomenon are analyzed in depth. Besides, an empirical shear strength formula and an arc tangent equation of discontinuity shear properties are put forward. Results show that, cutting failure effect is more likely to take place when roughness coefficient or normal stress is higher; dilatancy phenomenon is prone to emerge along with the increase of roughness coefficient or the decrease of normal stress.

     

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