Stability study on the northern batter of MBC Open Pit using Plaxis 3D

GeoMEast2017
  • 52 Downloads
Part of the following topical collections:
  1. Geotechnical Engineering for Urban and Major Infrastructure Development

Abstract

Cracks appeared on the northern batter at Maddingley Brown Coal Open Pit Mine, Victoria, Australia, on 8 November 2013 and a 2-day rainfall event happened 5 days later. This study models the stability of the northern batter considering the effect of the rainfall event and an emergency buttress using finite element method (FEM) encoded in Plaxis 3D. It is found that the batter tended to lead to block sliding after overburden removal. The observed vertical crack would be a combined action of the overburden removal and groundwater flow. The simulated location of cracks agrees well with the actual location, and the simulated heave of the coal seam is in good agreement with the experience in Victoria brown coal open pit mining. The rainfall accelerated the development of the cracks. With the construction of the emergency buttress, the batter became stable that is in good agreement with the monitored data.

Keywords

Batter stability Brown coal Ground crack Open pit mining Rainfall Buttress 

Notes

Acknowledgements

The authors sincerely express their appreciation to Maddingley Brown Coal Pty Ltd. for their support of this research project, in particular, to Mr. Tim Tillig, Environmental, Quality & Safety Officer.

The study is supported by the Australian Research Training Program (RTP) Scholarship and Federation University Australia George Collins Memorial Scholarship.

References

  1. Al Mandalawi M, You G, Dahlhaus P, Dowling K, Sabry M (2015) Slope stability and Rockfall hazard analysis in open pit zinc mine. Int J GEOMATE 8:1143–1150Google Scholar
  2. Australian Government Bureau of Meteorology (2013) Climate data online. http://www.bom.gov.au/climate/data/index.shtml?bookmark=136
  3. Chandrasekaran SS, Owaise RS, Ashwin S, Jain RM, Prasanth S, Venugopalan RB (2013) Natural Hazards. Investigation on infrastructural damages by rainfall-induced landslides during November 2009 in Nilgiris, India.  https://doi.org/10.1007/s11069-012-0432-x
  4. Chang KT, Huang HC (2015) Three-dimensional analysis of a deep-seated landslide in central Taiwan. Environ Earth Sci 74:1379–1390.  https://doi.org/10.1007/s12665-015-4128-x CrossRefGoogle Scholar
  5. Djerbal L, Melbouci B (2015) Numerical modeling of the climate effect on the evolution of the landslide of Ain El Hammam (Algeria). Eng Geol Soc Territory.  https://doi.org/10.1007/978-3-319-09057-3_220
  6. Durie RA (1991) The science of Victorian brown coal: structure, properties and consequences for utilization. Butterworth Heinemann, OxfordGoogle Scholar
  7. Hammouri NA, Malkawi AIH, Yamin MMA (2008) Stability analysis of slopes using the finite element method and limiting equilibrium approach. Bull Eng Geol Environ 67:471–478.  https://doi.org/10.1007/s10064-008-0156-z CrossRefGoogle Scholar
  8. Jamsawang P, Boathong P, Mairaing W, Jongpradist P (2015) Undrained creep failure of a drainage canal slope stabilized with deep cement mixing columns. Landslides 13:939–955.  https://doi.org/10.1007/s10346-015-0651-9 CrossRefGoogle Scholar
  9. Learmonth AP (1985) Geomechanics working in the power industry. The National Engineering Conference, MelbourneGoogle Scholar
  10. Liu K, Mackay R, Xue J, Tolooiyan A (2014) Experimental study of brown coal hydraulic behavior at low confining stress. Unsaturated soils: research and applications—proceedings of the 6th International Conference on Unsaturated Soils, Sydney, pp 1125–1130Google Scholar
  11. Liu K, Xue J, Yang M (2016) Deformation behaviour of geotechnical materials with gas bubbles and time dependent compressible organic matter. Eng Geol 213:98–106CrossRefGoogle Scholar
  12. Maiorano RMS, Russo G, Viggiani C (2014) A landslide in stiff, intake clay. Acta Geotech 9:817–829.  https://doi.org/10.1007/s11440-013-0249-0 CrossRefGoogle Scholar
  13. Mining Warden (2008) Yallourn Mine batter failure inquiry. http://eagcg.org/common/pdf/Yallourn.pdf
  14. Newcomb SR, Pilkington T, Raisbeck D (1988) Stability and earth movements on the western batters of Yallourn open cut mine. Fifth Australia—New Zealand Conference on Geomechanics SydneyGoogle Scholar
  15. Ozbay A, Cabalar AF (2015) FEM and LEM stability analyses of the fatal landslides at Çöllolar open-cast lignite mine in Elbistan, Turkey. Landslides 12:155–163.  https://doi.org/10.1007/s10346-014-0537-2 CrossRefGoogle Scholar
  16. Rosengren KJ (1961) The structure and strength of Victoria brown coal. MSc thesis, University of MelbourneGoogle Scholar
  17. Scott B, Ranjith G, Choi SK, Khandelwal M (2010) A review on existing opencast coal mining methods within Australia. J Min Sci 46:280–297.  https://doi.org/10.1007/s10913-010-0036-3 CrossRefGoogle Scholar
  18. Tolooiyan A, Mackay R, Xue J (2014) Measurement of the tensile strength of organic soft rock. Geotech Test J 37:20140028.  https://doi.org/10.1520/GTJ20140028 CrossRefGoogle Scholar
  19. Trollope DH, Rosengren KJ, Brown ET (1965) The mechanics of brown coal. Géotechnique 15:363–386CrossRefGoogle Scholar
  20. Usluogullari OF, Temugan A, Duman ES (2016) Comparison of slope stabilization methods by three-dimensional finite element analysis. Nat Hazards 81:1027–1050.  https://doi.org/10.1007/s11069-015-2118-7 CrossRefGoogle Scholar
  21. Vishal V, Pradhan SP, Singh TN (2015) Analysis of stability of slopes in Himalayan terrane along National Highway: 109, India. Eng Geol Soc Territory.  https://doi.org/10.1007/978-3-319-09300-0_96
  22. Wang M, Liu K, Yang G, Xie J (2017) Three-dimensional slope stability analysis using laser scanning and numerical simulation. Geomatics, Nat Hazards Risk 8:997–1011.  https://doi.org/10.1080/19475705.2017.1290696 CrossRefGoogle Scholar
  23. Washusen JA, Fraser CJ (1982) Stability control and monitoring in deep Latrobe Valley Open Cuts. The Aus.I.M.M. Conference, Melbourne, VicGoogle Scholar
  24. Xue J, Tolooiyan A (2012) Reliability analysis of block sliding in large brown coal open cuts. The 2012 World Congress on Advances in Civil, Environmental, and Materials Research (ACEM’ 12), 1578–1587, Seoul, KoreaGoogle Scholar

Copyright information

© Saudi Society for Geosciences 2018

Authors and Affiliations

  1. 1.School of Engineering and Information TechnologyFederation University AustraliaMt HelenAustralia

Personalised recommendations