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Assessment of rock slope stability by slope mass rating (SMR): A case study for the gas flare site in Assalouyeh, South of Iran

  • Received : 2016.04.30
  • Accepted : 2017.03.04
  • Published : 2017.10.25

Abstract

Slope mass rating (SMR) is commonly used for the geomechanical classification of rock masses in an attempt to evaluate the stability of slopes. SMR is calculated from the $RMR_{89-basic}$ (basic rock mass rating) and from the characteristic features of discontinuities, and may be applied to slope stability analysis as well as to slope support recommendations. This study attempts to utilize the SMR classification system for slope stability analysis and to investigate the engineering geological conditions of the slopes and the slope stability analysis of the Gas Flare site in phases 6, 7 and 8 of the South Pars Gas Complex in Assalouyeh, south of Iran. After studying a total of twelve slopes, the results of the SMR classification system indicated that three slope failure modes, namely, wedge, plane and mass failure were possible along the slopes. In addition, the stability analyses conducted by a number of computer programs indicated that three of the slopes were stable, three of the slopes were unstable and the remaining six slopes were categorized as 'needs attention'classes.

Keywords

References

  1. Azarafza, M. (2013), "Geotechnical site investigation gas flares site of phase 6, 7 and 8 in south pars gas complex", M.Sc. Dissertation, University of Yazd, Yazd, Iran.
  2. Azarafza, M., Asghari-Kaljahi, E. and Moshrefy-Far, M.R. (2014), "Numerical modeling and stability analysis of shallow foundations located near slopes (case study: Phase 8 gas flare foundations of south pars gas complex)", J. Appl. Geol., 10(2), 92-99.
  3. Azarafza, M., Yarahmadi-Bafghi, A.R., Asghari-Kaljahi, E., Bahmannia, G.R. and Moshrefy-Far, M.R. (2013), "Stability analysis of jointed rock slopes using key block method (case study: Gas flare site in 6, 7 and 8 phases of south pars gas complex)", J. Appl. Geol., 9(3), 169-185.
  4. Barton, N. (1999), "TBM performance estimation in rock using QTBM", Tunnels and Tunneling International Magazine, September, 30-34.
  5. Barton, N., Lien, R. and Lunde, J. (1974), "Engineering classification of rock masses for the design of tunnel support", Rock Mech., 6(4), 189-236. https://doi.org/10.1007/BF01239496
  6. Bieniawski, Z.T. (1976), "Rock mass classification in rock engineering", Proceedings of the Symposium of Exploration for Rock Engineering, Johannesburg, South Africa, November.
  7. Bieniawski, Z.T. (1979), "The geomechanics classification in rock engineering applications", Proceedings of the 4th International Congress on Rock Mechanics, Montreux, Switzerland, September.
  8. Bieniawski, Z.T. (1989), Engineering Rock Mass Classification, John Wiley, New York, U.S.A.
  9. Chen, Z. (1995), "Recent developments in slope stability analysis", Proceedings of the 8th International Congress of Rock Mechanics, Tokyo, Japan, September.
  10. Cummings, R.A., Kendorski, F.S. and Bieniawski, Z.T. (1982), Caving Rock Mass Classification and Support Estimation, US Bureau of Mines Contract Report #J0100103, Engineers International Inc., Chicago, U.S.A.
  11. Deere, D.U. (1989), Rock Quality Designation (RQD) after 20 Years, USACE, Contract Report GL-89-1, Waterways Experimental Station, Vicksburg, Mississippi, U.S.A.
  12. Deere, D.U. and Deere, D.W. (1988), "The rock quality designation (RQD) index in practice", Am. Soc. Test. Mater., 984, 91-101.
  13. Deere, D.U., Hendron, A.J., Patton, F.D. and Cording, E.J. (1967), "Design of surface and near surface construction in rock", Proceedings of the 8th Symposium on Rock Mechanics, New York, U.S.A. September.
  14. Gupte, S.S., Singh, R., Vishal, V. and Singh, T.N. (2013), "Detail investigation of stability of in-pit dump slope and its capacity optimization", J. Earth Sci. Eng., 6(2), 146-159.
  15. Hack, H.R. (1998), Slope Stability Probability Classification, ITC Delf Pub., ITC Enschede, the Netherlands.
  16. Hack, R., Price, D. and Rengers, N.A. (2003), "A new approach to rock slope stability-a probability classification (SSPC)", Bull. Eng. Geol. Environ., 62(2), 167-184. https://doi.org/10.1007/s10064-002-0155-4
  17. Haines, A. and Terbrugge, P.J. (1991), "Preliminary estimation of rock slope stability using rock mass classification system", Proceedings of the 7th ISRM Congress on Rock Mechanics, Aachen, Germany, September.
  18. Hoek, E., Carter, T.G. and Diederichs, M.S. (2013), "Quantification of the Geological Strength Index Chart", Proceedings of the 47th US Rock Mechanics/Geomechanics Symposium, San Francisco, California, U.S.A., June.
  19. Kendorski, F., Cummings, R., Bieniawski, Z.T. and Skinner, E. (1983), "Rock mass classification for block caving mine drift support", Proceedings of the 5th International Congress on Rock Mechanics, Melbourne, Australia, April.
  20. Laubscher, D.H. (1990), "A geomechanical classification system for the rating of rock mass in mine design", J. S. AFR. I. Min. Metal, 90(10), 257-273.
  21. Marinos, V., Marinos, P. and Hoek, E. (2005), "The geological strength index: applications and limitations", Bull. Eng. Geol. Environ., 64(1), 55-65. https://doi.org/10.1007/s10064-004-0270-5
  22. Pantelidis, L. (2010), "An alternative rock mass classification system for rock slopes", Bull. Eng. Geol. Environ., 69(1), 29-39. https://doi.org/10.1007/s10064-009-0241-y
  23. Pradhan, S.P., Vishal, V. and Singh, T.N. (2011), "Stability of slope in an open cast mine in Jharia coalfield, India-a slope mass rating approach", Min. Eng. J., 12(10), 36-40.
  24. Rocscience (2010a), SWEDGE-3D Surface Wedge Analysis for Slopes (Version 4.0), Rocscience Inc., Toronto, Canada.
  25. Rocscience (2010b), ROCPLANE-Planar Sliding Stability Analysis for Rock Slopes (Version 2.0), Rocscience Inc., Toronto, Canada.
  26. Rocscience (2010c), SLIDE-2D Limit Equilibrium Analysis of Slope Stability (Version 3.0), Rocscience Inc., Toronto, Canada.
  27. Romana, M., Seron, J.B. and Montalar, E. (2001), "La clasificacion geomecanica SMR: Aplicacion experiencias y validacion", Proceedings of the V Simp Nacional sobre taludes y laderas inestables, Centro de publications, Secretaria General Tecnica. Ministerio de Fomento, CEDEX, Madrid.
  28. Romana, M., Seron, J.B. and Montalar, E. (2003), "SMR geomechanics classification: application, experience and validation", Proceedings of the 10th Congress of the International Society for Rock Mechanics, South Africa, Sandton, South Africa, September.
  29. Romana, M., Seron, J.B., Jorda, L. and Velez, M.I. (2005), "La clasificacion geomecanica SMR parataludes: Estado actual, aplicacion y experiencia internacional", Proceedings of the VI Symposium Nacional sobre taludes y laderas inestables, Valencia, June.
  30. Selby, M.J. (1980), "A rock mass strength classification for geomorphic purposes: With test from Antarctica and New Zealand", Zeit. Geomorph., 24, 31-51.
  31. Singh, R.P., Dubey, C.S., Singh, S.K., Shukla, D.P., Mishra, B.K., Tajbakhsh, M., Ningthoujam, P.S., Sharma, M. and Singh, N. (2013), "A new slope mass rating in mountainous terrain, Jammu and Kashmir Himalayas: Application of geophysical technique in slope stability studies", Landsl., 10(3), 255-265. https://doi.org/10.1007/s10346-012-0323-y
  32. Singh, B. and Goel, R.K. (1999), Rock Mass Classification: A Practical Approach in Civil Engineering, 1st Edition, Elsevier Sciences.
  33. Singh, T.N., Verma, A.K. and Sarkar, K. (2010), "Static and dynamic analysis of a landslide", Geomat. Natur. Hazard. Risk, 1(4), 323-338. https://doi.org/10.1080/19475705.2010.521354
  34. Tomas, R., Delgado, J. and Seron, J.B. (2007a), "Visual sensibility analysis of slope mass rating (SMR) correction parameters using continuous functions", Proceedings of the 11th Congress of the International Society for Rock Mechanics, Lisbon, Portugal, July.
  35. Tomas, R., Delgado J. and Seron, J.B. (2007b), "Modification of slope mass rating (SMR) by continuous functions", J. Rock Mech. Min. Sci., 44(7), 1062-1069. https://doi.org/10.1016/j.ijrmms.2007.02.004
  36. Tomas, R., Cuenca, A., Cano M. and Garcia-Barba, J. (2012), "A graphical approach for slope mass rating (SMR)", Eng. Geol., 124, 67-76. https://doi.org/10.1016/j.enggeo.2011.10.004
  37. Trivedi, R., Vishal, V., Pradhan, S.P., Singh, T.N. and Jhanwar, J.C. (2012), "Slope stability analysis in limestone mines", J. Earth Sci. Eng., 5(4), 759-766.
  38. Unal, E. (1996), "Modified rock mass classification: M-RMR system", Proceedings in Milestone in Rock Engineering, The Bieniawski Jubilee Collection, Balkema, 203-223.
  39. Vishal, V., Pradhan, S.P. and Singh, T.N. (2010), "Instability analysis of mine slope by finite element method approach", J. Earth Sci. Eng., 3(6), 11-23.
  40. Vishal, V., Pradhan, S.P. and Singh, T.N. (2011), "Tensile strength of rock under elevated temperatures", Geotech. Geol. Eng., 29(6), 1127-1133. https://doi.org/10.1007/s10706-011-9440-y
  41. Vishal, V., Pradhan, S.P. and Singh, T.N. (2015), "Analysis of stability of slopes in Himalayan terrine along national highway", Ind. Int. Eng. Geol. Soc. Territ., 1, 511.
  42. Wickham, G.E., Tiedemann, H.R. and Skinner, E.H. (1972), "Support determination based on geologic predictions", Proceedings of the American Rapid Excavation & Tunneling Conference (RETC), American Institute of Mining, Metallurgical and Petroleum Engineers (AIME), Chicago, June.

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