Evaluation method of slope stability based on the Qslope system and BQ method

  • Yanhui Song
  • Huishi XueEmail author
  • Xiangling Meng
Original Paper


At present, a variety of slope stability assessment methods based on rock mass quality classification have been proposed. However, the rather mature evaluation system for different types of rock slopes is still absent. In this paper, the existing classification methods for rock slope are first discussed, then by combining the Qslope and BQ methods based on the relationship between different classification systems, a relatively simple and applicable evaluation system is proposed, which uses the BQ method to obtain the basic quality of the rock slope and then the Qslope method to revise this rating according to the geological environment of the slope. The new system can reduce field survey and subjective factors. The case study shows that the evaluation results of the rock slope using the new method coincide with the actual stability status, showing that this method can be further tested in engineering practice.


Rock slope Rock mass quality classification Slope stability 


  1. Bar N, Barton N (2017) The Q-slope method for rock slope engineering. Rock Mech Rock Eng.
  2. Barton N (2002) Some new Q-value correlations to assist in site characterization and tunnel design. Int J Rock Mech Min Sci 39:185–216CrossRefGoogle Scholar
  3. Barton N, Bar N (2015) Introducing the Q-slope method and its intended use within civil and mining engineering projects. ISRM regional symposium EUROCK 2015 — future development of rock mechanics, 7–10 October 2015, Salzburg, Austria, pp 157–162Google Scholar
  4. Barton N, Lien R, Lunde J (1974) Engineering classification of rock masses for the design of tunnel support. Rock Mech 6(4):189–236CrossRefGoogle Scholar
  5. Chen Z (1995) Recent developments in slope stability analysis. In: Proceedings of the 8th international congress. ISRM, Tokyo, pp 1041–1048Google Scholar
  6. Hack R, Price D, Rengers N (2003) A new approach to rock slope stability—a probability classification (SSPC). Bull Eng Geol Environ 62:167–184Google Scholar
  7. Hoek E, Kaiser PK, Bawden WF (1995) Support of underground excavation in hard rock. Balkema, Rotterdam, p 105Google Scholar
  8. Mazzocola DF, Hudson JA (1996) A comprehensive method of rock mass characterization for indicating natural slope instability. Q J Eng Geol 29:37–56CrossRefGoogle Scholar
  9. Nicholson DT, Hencher SR (1997) Assessing the potential for deterioration of engineered rock slopes. In: Proceedings of the IAEG symposium, Athens, pp 911–917Google Scholar
  10. Robertson AM (1988) Estimating weak rock strength. In: Proceedings of the SME annual meeting, Phoenix, pp 1–5Google Scholar
  11. Romana M (1985) New adjustment ratings for application of Bieniawski classification to slopes. In: Proceedings of the international symposium on role of rock mechanics, Zacatecas, Mexico, pp 49–53Google Scholar
  12. Romana M, Serón JB, Montalar E (2003) SMR Geomechanics classification: application, experience and validation. In: Proceedings of the international symposium on role of rock mechanics, South African Institute of Mining and Metallurgy, pp 1–4Google Scholar
  13. Selby MJ (1980) A rock mass strength classification for geomorphic purposes: with tests from Antarctica and New Zeland. Z Geomorphol 24(1):31–51Google Scholar
  14. Shi YC, Wang Z, Wan GR et al (2005) Study of mountain highway slope mass rating. Chin J Rock Mech Eng 24(6):939–944 (In Chinese)Google Scholar
  15. Singh A (2004) FRHI—a system to evaluate and mitigate rockfall hazard in stable rock excavations. J Div Civ Eng Inst Eng (India) 85:62–75Google Scholar
  16. Singh A, Connolly M (2003) VRFSR—an empirical method for determining volcanic rock excavation safety on construction sites. J Div Civ Eng Inst Eng (India) 84:176–191Google Scholar
  17. Sun DY, Chen ZY, Du BH et al (1997) Modification to the RMR-SMR system for slope stability evaluation. Chin J Rock Mech Eng 16(4):297–304 (In Chinese)Google Scholar
  18. The National Standards Compilation Group of People’s Republic of China (2014) GB/T 50218—2014 standard for engineering classification of rock masses. China Planning Press, Beijing (in Chinese)Google Scholar
  19. Zhang YC, Huang RQ, Zhao LD et al (2010) Study of Tianshan slope rock mass rating (TSMR) system. Chin J Rock Mech Eng 29(3):617–623 (in Chinese)Google Scholar

Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Geology Engineering and GeometricsChang’an UniversityXi’anChina
  2. 2.Key Laboratory of Western Mineral Resources and Geological Engineering Ministry of EducationXi’anChina
  3. 3.Northwest Engineering Corporation LimitedXi’anChina

Personalised recommendations