Pit wall stability analysis for hard rocks
https://doi.org/10.17073/2500-0632-2016-3-10-19
Abstract
The paper discusses the methodology for assessing stability of pit walls in hard rocks, taking into account geological and structural features the rock mass and spatial position of weakness zones in relation to the pit walls. It is shown that, depending on the walls mutual orientation, the problem of pit wall stability can be solved in two-dimensional or three-dimensional formulation. Examples are given for assessing pit wall stability taking into account weakness zones in two-dimensional formulation by limit equilibrium and finite element methods, and, in three-dimensional formulation, by the method of volume rock blocks. Modern strength criteria, which are recommended to be used for modeling pit wall stability to prevent rock landslides, are described. The proposed method for assessing pit wall stability in hard rocks allows reasonable selecting the calculation method depending on structural pattern of the rock mass and the pit walls spatial position.
About the Authors
I. K. Fomenko
Russian State Geological Prospecting University named after Sergo Ordzhonikidze
Russian Federation
Igor K. Fomenko - Doctor of Geological-Mineralogical Sciences, chief scientific officer
Russian Federation
Igor K. Fomenko - Doctor of Geological-Mineralogical Sciences, chief scientific officer
V. V. Pendin
Russian State Geological Prospecting University named after Sergo Ordzhonikidze
Russian Federation
Vadim V. Pendin - Doctor of Geological-Mineralogical Sciences, Professor
Russian Federation
Vadim V. Pendin - Doctor of Geological-Mineralogical Sciences, Professor
D. N. Gorobtsov
Russian State Geological Prospecting University named after Sergo Ordzhonikidze
Russian Federation
Denis N. Gorobtsov - candidate of geological-mineralogical, associate professor
Russian Federation
Denis N. Gorobtsov - candidate of geological-mineralogical, associate professor
References
1. Barton N.R., Bandis S. Review of predictive capabilities of JRC-JCS model in engineering practice // Rock joints:Proc. Int. Symp. оn Rock Joints / N. Barton, O. Stephansson, eds. - Rotterdam: Balkema, 1990. – pp. 603-610.
2. Barton N.R. and Choubey V., The shear strength of rock joints in theory and practice. Rock Mech. 10(1-2), 1-54.
3. Esterhuizen J., Filz G.M. and Duncan, J.M.. Constitutive Behaviour of Geosynthetic Interfaces, Journal of GeoTechnical and Geoenvironmental Engineering, October 2001, pp. 834-840.
4. Hoek E., Bray J., Boyd J. The stability of a rock slope containing a wedge resting on two intersecting discontinuities // Quarterly Journal of Engineering Geology and Hydrogeology, 1973. – v. 6. – №1, pp. 22-35.
5. Hoek E., Bray J.W. Rock Slope Engineering/3rd ed. - London: Institution of Mining and Metallurgy, 1981. – 358 p.
6. Hoek E., Caranza-Torres C.T., Corcum B. Hoek-Brown failure criterion-2002 edition//Proc. of the North American Rock Mechanics Society (NARMS-TAC’2002). – Toronto: Mining Innovation and Technology, 2002. – v. 1. – pp. 267-273.
7. Krahn J. Stability modeling with SLOPE/W. An Engineering Methodology: First Edition, Revision 1. Calgary, Alberta: GEO-SLOPE International Ltd., 2004. – 396 pp.
8. Krahn J., Price V.E., and Morgenstern, N. R. Slope stability computer program for Morgenstern- Price method of analysis // University of Alberta, Edmonton, Alta. 1971. Vol. 14.
9. Markland J.T. A useful technique for estimating the stability of rock slopes when the rigid wedge sliding type of failure is expected // Imperial College Rock Mechanics Research Report, 1972. – №19. – 10 p.
10. Patton F.D. Multiple models of shear failure in rock // Proc. 1stInternat.Congr. on Rock Mechanics. – Lisbon, 1966. – v. 1. – pp. 509-513
11. Snowden, “Proposal for Additional Features in SLIDE and SWEDGE”, unpublished memorandum to Rocscience, 5th April 2007.
12. Snowden, "Snowden Modified Anisotropic Linear strength model", unpublished memorandum to Rocscience, November 2011.
13. Wyllie D.C., Mah C.W. Rock Slope Engineering: civil and mining/4rd ed. – London: Spon Press / Taylor&Francis Group, 2010. – 431 p.
14. Zerkal' O.V., Fomenko I.K. Opolzni v skal'nyh gruntah i ocenka ih ustojchivosti [landslides in rocky soil and evaluation of their stability] // Engineering geology. – 2016. – No. 4. – Pp. 4-21.
15. Zerkal' O.V., Fomenko I. K. Ocenka vlijanija anizotropii svojstv gruntov na ustojchivost' sklonov [Assessment of the anisotropy of the properties of the soil on the slope stability] // Engineering survey. – 2013. – No. 9. – Pp. 44-50.
16. Kalinin Je.V., Panas'jan L.L., Shirokov V.N., Artamonova N.B., Fomenko I.K. Modelirovanie polej naprjazhenij v inzhenerno-geologicheskih massivah. [Simulation of stress fields in geotechnical arrays] – M.: Moscow State University, 2003. – 261 p.
17. Krauch S., Starfild A. Metody granichnyh jelementov v mehanike tverdogo tela. [Boundary element methods in solid mechanics] – M.: Mir, 1987. – 217 p.
18. Pravila obespechenija ustojchivosti otkosov na ugol'nyh razrezah. [Rules on the slope stability at the coal mines] – SPb.: State. Research Institute of Mining of geomechanical and Surveying – Interdisciplinary Research Center VNIMI, 1998. – 208 p.
19. Pendin V.V., Fomenko I.K. Metodologija ocenki i prognoza opolznevoj opasnosti. [Methodology for assessment and prediction of landslide hazard] – M.: LENAND Moscow, 2015. – 320 p.
20. Rekomendacii po raschetu ustojchivosti skal'nyh otkosov: P-843-86. [Guidelines for the calculation of the stability of rock slopes: P-843-86.] – M.: Hydroproject, 1986. – 51 p.
21. SP 11-105-97 Inzhenerno-geologicheskie izyskanija dlja stroitel'stva. Chast' II. Pravila proizvodstva rabot v rajonah razvitija opasnyh geologicheskih i inzhenerno-geologicheskih processov. [SP 11-105-97 Engineering survey for construction. Part II. Terms of works in the areas of development of dangerous geological and engineering-geological processes.] – M.: Russian State Committee for Construction, 2003. – 93 p.
22. SP 116.13330.2012 Inzhenernaja zashhita territorij, zdanij i sooruzhenij ot opasnyh geologicheskih processov. Osnovnye polozhenija (Aktualizirovannaja redakcija SNiP 22-02- 2003). [JV 116.13330.2012 Engineering protection of territories, buildings and structures from dangerous geological processes. Basic provisions (SNIP 22/02/2003 The updated edition)] – M.: Russian Ministry of Regional Development, 2012. – 60 p.
23. SP 47.13330.2012 Inzhenernye izyskanija dlja stroitel'stva. Osnovnye polozhenija (Aktualizirovannaja redakcija SNiP 11-02-96). [SP 47.13330.2012 Engineering surveys for construction. Basic provisions (The updated edition of SNIP 11-02-96)] – M.: Russian Ministry of Regional Development, 2012. – 116 p.
Review
For citations:
Fomenko I.K., Pendin V.V., Gorobtsov D.N. Pit wall stability analysis for hard rocks. Gornye nauki i tekhnologii = Mining Science and Technology (Russia). 2016;(3):10-21. (In Russ.) https://doi.org/10.17073/2500-0632-2016-3-10-19
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