Dillon, MJ & Wardlaw, HJ 2010, 'Strength and liquefaction assessment of tailings', in R Jewell & AB Fourie (eds), Proceedings of the First International Seminar on the Reduction of Risk in the Management of Tailings and Mine Waste
, Australian Centre for Geomechanics, Perth, pp. 347-360.
Historically, in situ testing of tailings has been primarily based on drilling techniques with the recovery of
tube samples, coupled with standard penetration test (SPT), shear vane testing and laboratory test work used
to assess the tailings properties. These techniques have limitations. In more recent time, the uses of cone
penetrometer testing (CPTu) and associated analytical techniques have lead to an improved understanding
of tailings in situ properties.
A combination of both drilling and CPTu techniques is considered appropriate for identifying the key
engineering properties of tailings. The results of the investigation can then be used in both stability and
seismic liquefaction analyses.
Results from the investigation of two different tailing deposition regimes are presented together with their
strength and liquefaction assessments.
Ishihara, K., Troncoso, J.H., Kaware, Y. and Takahashi, Y. (1980) Cyclic Strength Characteristics of Tailings Materials,
Soils and Foundations, Vol. 20, No. 4.
Lunne, T., Robertson, P.K. and Powell, J.J.M. (2001) Cone Penetration Testing in Geotechnical Practice, Blackie
Academix and Professional, pp. 63–66.
Olson, S. and Stark, T. (2002) Liquefied Strength Ratio from Liquefaction Flow Failure Case Histories, Canadian
Geotechnical Journal, Vol. 39, pp. 627–647.
Robertson, P.K. (1990) Soil Classification using the Cone Penetration Test, Canadian Geotechnical Journal, Vol. 27.
Seed, R.B., Cetin, K.O., Moss, R.E.S., Kammerer, A.M., Wu, J., Pestana, J.M., Riemer, M.F., Sancio, J.B., Bray, J.D.,
Kayen, R.E. and Faris, A. (2003) Recent Advances in Soil Liquefaction Engineering: A Unified and Consistent
Framework, 26th Annual ASCE Los Angeles Geotechnical Spring Seminar.
Youd, T.L., Idriss, I.M., Andrus, R.D., Arango, I., Castro, G., Christian, J.T., Dobry, R., Finn, W.D., Harder Jr., L.F.,
Hynes, M.E., Ishihara, K., Koester, J.P., Liao, S.S.C., Marcuson III, W.F., Martin, G.R., Mitchell, J.K.,
Moriwaki, Y., Power, M.S., Robertson, P.K., Seed, R.B. and Stofoe II, K.H. (2001) Liquefaction Resistance of
Soils: Summary Report from the 1996 NCEER and 1998 NCEER/NSF Workshops on Evaluation of
Liquefaction Resistance of Soils, Journal of Geotechnical and Geoenvironmental Engineering, October,