Centrifuge Tests on Comixing of Mine Tailings and Waste Rock
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 144, Issue 1
Abstract
A series of centrifuge tests were conducted to examine self-weight consolidation, dynamic response, liquefaction potential, and slope stability of mine tailings alone and in mixtures with waste rock. Mixture ratio of waste rock to tailings by dry mass varied around the region of a rock skeleton just-filled with liquefiable mine tailings (roughly in this case). The performance of three mixtures was compared to that of tailings in terms of pore pressure dissipation, shear wave velocity, soil acceleration, lateral displacement, pore pressure buildup, liquefied depth, settlement, and slope stability. Comixing proved to be a promising alternative to conventional separate disposal. Consolidation time and settlement were reduced significantly, and shear wave velocity increased with increasing rock content. The improvement in dynamic response was not pronounced when the tailings proportion was larger than required to fill the rock skeleton but became very apparent when that ratio was reached or surpassed.
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Acknowledgments
The authors would like to acknowledge Golder Associates Ltd. for partial funding of this research.
References
Antonaki, N., Sasanakul, I., Abdoun, T., Sanin, M. V., Puebla, H., and Ubilla, J. (2013). “Centrifuge modelling of the consolidation evolution of fine-grained mine tailings.” Proc., Tailings 2013: 1st Int. Seminar on Tailings Management, Gecamin, Chile.
Antonaki, N., Sasanakul, I., Abdoun, T., Sanin, M. V., Puebla, H., and Ubilla, J. (2014). “Centrifuge modeling of deposition and consolidation of fine-grained mine tailings.” Proc., Geo-Congress: Geo-Characterization and Modelling for Sustainability, ASCE, Reston, VA.
Blight, G. (2009). Geotechnical engineering for mine waste storage facilities, Taylor & Francis Group, London.
Brawner, C. O. (1978). “Concepts and experience for subsurface storage of tailings.” Proc., 2nd Int. Tailings Symp., Tailings Disposal Today, Miller Freeman Publications, San Francisco, 153–177.
Bussiere, B. (2007). “Hydro-geotechnical properties of hard rock tailings from metal mines and emerging geo-environmental disposal approaches.” Can. Geotech. J., 44(9), 1019–1052.
Engels, J. (2002). “Beach slope prediction methods.” ⟨http://www.tailings.info/technical/beach-slope.html⟩ (May 18, 2016).
Leduc, M., and Smith, M. E. (2003). “Tailings co-disposal: Innovations for cost savings and liability reduction.” Latin America Mining Record, Sedalia, CO.
Morris, P. H., and Williams, D. J. (1997). “Co-disposal of washery wastes at Jeebropilly colliery, Queensland, Australia.” Trans. Inst. Min. Metall. Sect. A Min. Ind., 106, A25–A29.
Rico, M., Benito, G., Salgueiro, A. R., Díez-Herrero, A., and Pereira, H. G. (2008). “Reported tailings dam failures: A review of the European incidents in the worldwide context.” J. Hazard. Mater., 152(2), 846–852.
Sanin, M. V., Humberto, P., and Terry, E. (2012). “Cyclic behaviour of thickened tailings.” Proc., Tailings and Mine Waste 2012, Univ. of British Columbia, Vancouver, BC, Canada.
Taylor, R. E. (1995). Geotechnical centrifuge technology, Blackie Academic and Professional, London.
TEMA version 3.5-016 [Computer software]. Image systems, Linköping, Sweden.
Vick, S. G. (1990). Planning, design, and analysis of tailings dams, BiTech Publishers, Vancouver, BC, Canada.
Wickland, B. E. (2006). “Volume change and permeability of mixtures of waste rock and fine tailings.” Ph.D. dissertation, Univ. of British Columbia, Vancouver, BC, Canada.
Wickland, B. E., and Wilson, G. W. (2005). “Self-weight consolidation of mixtures of mine waste rock and tailings.” Can. Geotech. J., 42(2), 327–339.
Wickland, B. E., Wilson, G. W., and Wijewickreme, D. (2010). “Hydraulic conductivity and consolidation response of mixtures of mine waste rock and tailings.” Can. Geotech. J., 47(4), 472–485.
Wickland, B. E., Wilson, G. W., Wijewickreme, D., and Klein, B. (2006). “Design and evaluation of mixtures of mine waste rock and tailings.” Can. Geotech. J., 43(9), 928–945.
Wijewickreme, D., Khalili, A., and Wilson, G. W. (2010). “Mechanical response of highly gap-graded mixtures of waste rock and tailings. II: Undrained cyclic and post-cyclic shear response.” Can. Geotech. J., 47(5), 566–582.
Zeghal, M., Elgamal, A. W., and Parra, E. (1996). “Analyses of site liquefaction using downhole array seismic records.” Proc., 11th World Conf. on Earthquake Engineering, Pergamon, Oxford, U.K.
Zeghal, M., and Elgamal, A.-W. (1994). “Analysis of site liquefaction using earthquake records.” J. Geotech. Eng., 996–1017.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 144 • Issue 1 • January 2018
Copyright
©2017 American Society of Civil Engineers.
History
Received: Jul 26, 2016
Accepted: May 18, 2017
Published online: Oct 25, 2017
Published in print: Jan 1, 2018
Discussion open until: Mar 25, 2018
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