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Geotechnical and Geological Engineering

, Volume 36, Issue 2, pp 1249–1266 | Cite as

Role of Geometry and Stiffness Contrast on Stability of Open Pit Mines Struck by Earthquakes

  • A. Azhari
  • U. OzbayEmail author
Original Paper
  • 116 Downloads

Abstract

We develop a database containing 95 historical natural slope and 37 tailing dam failures triggered by earthquake. The database analyses show that earthquake-triggered failures in natural slopes are mostly initiated in the narrow ridges. We also collect published data on 177 open pit mines struck by earthquakes of which 85 mines are located in the seismically active areas. The database indicates no reportable failures triggered by earthquakes in the affected mines. We employ a finite element code to investigate the geometrical and stiffness contrast effects distinguishing the behavior of natural slopes and tailing dams from open pit slopes experiencing earthquake dynamic loading. It is concluded that narrow ridge and the top soil layer in natural slopes and the hill-shaped geometry and unconsolidated top later of tailing dams amplifies the horizontal peak ground velocity by factor of 8 compared to open pit mine slopes. Our numerical modeling of the rock slopes suggests that the typical pit geometry and the competent material in open pit mines boost the slope stability through decreasing the topographical amplification effects.

Keywords

Seismic stability analysis Natural slopes Tailing dams Open pit mines Rock slopes Site effects Numerical analysis 

References

  1. Abdallah M, Shahrour I, Hage Chehade F (2015) Stability analysis of a fractured rock mass in seismic conditions: case study in Lebanon. Geotech Eng Infrastructure Dev, 1519–1524. www.icevirtuallibrary.com/doi/abs/10.1680/ecsmge.60678.vol4.222
  2. Allen TI, Wald DJ (2007) Topographic slope as a proxy for global seismic site conditions (VS30) and amplification around the globe. U.S. geological survey open-file report 2007-1357Google Scholar
  3. Anggraeni D (2010) Modelling the impact of topography on seismic amplification at regional scale. University of Twente Faculty of Geo-Information and Earth Observation (ITC)Google Scholar
  4. Ashford SA, Sitar N, Lysmer J, Deng N (1997) Topographic effects on the seismic response of steep slopes. Bull Seismol Soc America 87(3):701–709Google Scholar
  5. Azhari A (2016) Evaluating the effect of earthquakes on open pit mine slopes. Colorado School of MinesGoogle Scholar
  6. Bhasin R, Kaynia AM (2004) Static and dynamic simulation of a 700-m high rock slope in western Norway. Eng Geol 71(3):213–226CrossRefGoogle Scholar
  7. Biggs JM, Biggs JM (1964) Introduction to structural dynamics. McGraw-Hill College, New YorkGoogle Scholar
  8. Chuhan Z, Pekau OA, Feng J, Guanglun W (1997) Application of distinct element method in dynamic analysis of high rock slopes and blocky structures. Soil Dyn Earthq Eng 16(6):385–394CrossRefGoogle Scholar
  9. Dai ML, Li TC (2007) Analysis of dynamic stability safety evaluation for complex rock slopes by strength reduction numerical method. Chin J Rock Mechan Eng 26(Suppl 1):2749–2754Google Scholar
  10. Geologic Map California (2006) USGS. Retrieved from https://commons.wikimedia.org/wiki/File:Geologic_map_California.jpg
  11. Geological Map of New Zealand, nd. Retrieved from http://the-geography.blogspot.com/2016/10/geological-map-of-new-zealand.html
  12. Gouveia F, Gomes RC, Lopes IF, Author AB (2012) Influence of stiffness contrast in non-horizontally layered ground on site effects. In: Proceedings of the 15th world conference on earthquake engineering, Lisbon, Portugal.Google Scholar
  13. Hack R, Alkema D, Kruse GA, Leenders N, Luzi L (2007) Influence of earthquakes on the stability of slopes. Eng Geol 91(1):4–15CrossRefGoogle Scholar
  14. Havenith H-B, Jongmans D, Faccioli E, Abdrakhmatov K, Bard P-Y (2002) Site effect analysis around the seismically induced Ananevo rockslide, Kyrgyzstan. Bull Seismol Soc Am 92:3190–3209CrossRefGoogle Scholar
  15. Hughes TJ (2012) The finite element method: linear static and dynamic finite element analysis. Courier Corporation, North ChelmsfordGoogle Scholar
  16. Jibson RW (2011) Methods for assessing the stability of slopes during earthquakes—a retrospective. Eng Geol 122(1–2):43–50CrossRefGoogle Scholar
  17. Kainthola A, Singh PK, Singh TN (2015) Stability investigation of road cut slope in basaltic rockmass, Mahabaleshwar, India. Geosci Front 6(6):837–845CrossRefGoogle Scholar
  18. Keefer DK (1984) Landslides caused by earthquakes. Geol Soc Am Bull 95(4):406–421CrossRefGoogle Scholar
  19. Li HB, Xiao KQ, Liu YQ (2007) Factor of safety analysis of bedding rock slope under seismic load. Chin J Rock Mech Eng 26(12):2385–2394Google Scholar
  20. Li AJ, Lyamin AV, Merifield RS (2009) Seismic rock slope stability charts based on limit analysis methods. Comput Geotech 36(1–2):135–148CrossRefGoogle Scholar
  21. Lorig L (2016) Designing for extreme events in open pit slope stabilty. J South Afr Inst Min Metall 116(5):387–398CrossRefGoogle Scholar
  22. Ma S, Archuleta RJ, Page MT (2007) Effects of large-scale surface topography on ground motions, as demonstrated by a study of the San Gabriel Mountains, Los Angeles, California. Bull Seismol Soc Am 97(6):2066–2079CrossRefGoogle Scholar
  23. Mavroulis S, Fountoulis I, Lekkas E (2010) Environmental effects caused by the Andravida (08-06-2008, ML = 6.5, NW Peloponnese, Greece) earthquake. In Geologically active: 11th IAEG congress. Taylor & Francis Group, Auckland, pp 451–459Google Scholar
  24. McColl ST, Davies TRH, McSaveney MJ (2012) The effect of glaciation on the intensity of the seismic ground motion. Earth Surf Process Landf 37:1290–1301CrossRefGoogle Scholar
  25. McGill Research Group Investigating Canadian Mining in Latin America (2012) Maps and spatial data. Retrieved from http://micla.ca/resources
  26. Moore JR, Gischig V, Burjanek J, Amann F, Hunziker M (2012) Earthquake triggered rock slope failures: damage and site effects. In: Proceedings 11th international and 2nd North American symposium on landslidesGoogle Scholar
  27. New Zealand Geology Web Map (2014). Retrieved from https://data.gns.cri.nz/geology
  28. New Zealand Geology Web Map (2014). Retrieved from https://data.gns.cri.nz/geology
  29. Newmark NM (1965) Effects of earthquakes on dams and embankments. Geotechnique 15(2):139–160CrossRefGoogle Scholar
  30. Read J, Beale G (eds) (2013) Guidelines for evaluating water in pit slope stability. CSIRO PublishingGoogle Scholar
  31. Read J, Stacey P (2009) Guidelines for open pit slope design. CSIRO publishingGoogle Scholar
  32. Rodrıguez CE, Bommer JJ, Chandler RJ (1999) Earthquake-induced landslides: 1980–1997. Soil Dyn Earthquake Eng 18(5):325–346CrossRefGoogle Scholar
  33. Standards and Regulations (2016) MSHA. Retrieved from https://www.msha.gov/regulations/standards-regulations
  34. Stead D, Eberhardt E, Coggan JS (2006) Developments in the characterization of complex rock slope deformation and failure using numerical modelling techniques. Eng Geol 83(1):217–235CrossRefGoogle Scholar
  35. Terzaghi K (1950) Mechanisms of landslides. Engineering geology (Berkeley) volume. Geological Society of America, BoulderGoogle Scholar
  36. UDEC Manual, Version 4.01 (2008) Itasca Consulting Group Inc. Minneapolis, USAGoogle Scholar
  37. UDEC, Version 5.0 (2016) Itasca Consulting GroupGoogle Scholar
  38. Wilson RC, Keefer DK (1983) Dynamic analysis of a slope failure from the 6 August 1979 Coyote Lake, California, earthquake. Bull Seismol Soc Am 73(3):863–877Google Scholar
  39. Yaqun L, Haibo L, Junru L, Qingchun Z, Guangsheng L (2004). UDEC simulation on dynamic response of rock slope of huangmailing phosphorite mine under explosion [J]. Chinese J Rock Mechanics Eng 23(21):3659–3663Google Scholar
  40. Zeng K, Li J, Liang X, Xu J (2011) Collapsing mechanism of rock slopes in Wenchuan earthquake. In: Third international conference on transportation engineering (ICTE)Google Scholar

Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.Colorado School of MinesGoldenUSA
  2. 2.Department of Mining Engineering Isfahan University of TechnologyIsfahanIran

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