Authors: Read, JRL


Cite As:
Read, JRL 2013, 'Data gathering, interpretation, reliability and geotechnical models', in PM Dight (ed.), Slope Stability 2013: Proceedings of the 2013 International Symposium on Slope Stability in Open Pit Mining and Civil Engineering, Australian Centre for Geomechanics, Perth, pp. 81-89,

Download citation as:   ris   bibtex   endnote   text   Zotero

The geotechnical model is the cornerstone of open pit design (Read and Stacey, 2009). It must be in place before the steps of setting up the geotechnical domains, allocating the design sectors and preparing the slope design can commence. The processes that must be followed to construct the model are outlined in this paper. They include recent advances in assessing parameter and model uncertainty, in particular, a modified Bayesian approach that has been developed to estimate the expected value of the measure of reliability. Overall, they form part of a system of reporting confidence in the geotechnical model and matching target levels of geotechnical effort with target levels of confidence in the data at each stage of project development.

Armstrong, M., Galli, A., Beucher, H., Le Loc’h, G., Renard, D., Doligez, B., Eschard, R. and Geffroy, D. (2011) Plurigaussian Simulations in Geosciences 2nd edition, Springer, ISBN-10: 3642196063.
Beale, G. and Read, J. (2013) Guidelines for evaluating water in pit slope stability, CSIRO Publishing, Melbourne (in press).
Cressie, N. (1993) Statistics for spatial data, Wiley Interscience.
Dowd, P.A. (2012) The use of generalised plurigaussian simulation to simulate lithologies and structures and thereby quantify the uncertainty associated with geometries and boundaries (e.g., lithologies and geological structures), Reports to LOP Sponsor’s Management Committee (unpublished).
Dowd, P.A., Pardo-Igúzquiza, E. and Xu, C. (2003) Simulating spatial facies using the truncated plurigaussian method, Computers and Geosciences, Elsevier, Vol. 29(2), pp. 123–141.
Dowd, P.A., Xu, C., Mardia, K.V. and Fowell, R. J. (2006) A flexible true plurigaussian code for spatial facies simulations, Computers and Geosciences, Elsevier, Vol. 32(10), pp. 1629–1645.
Dowd, P.A., Xu, C., Mardia, K.V. and Fowell, R.J. (2007). A comparison of methods for the stochastic simulation of rock fractures, Mathematical Geology, Springer, Vol. 39(7), pp. 697–714.
Emery, X. and Gonzalez, K.E. (2007a) Probabilistic modelling of mineralogical domains and its application to resources evaluation, Journal of the South African Journal of South African Institute of Mining and Metallurgy, South African Institute of Mining and Metallurgy, Vol. 107(12), pp. 803–809.
Galli, A., Beucher, H., Le Loc'h, G. and Doligez, B. (1994) The pros and cons of the truncated gaussian method, Geostatistical simulations, M. Armstrong and P.A. Dowd (eds), Kluwer, Dordrecht, pp. 217–233.
Harr, M.E. (1996) Reliability-based design in civil engineering, Dover Publications, New York.
JORC (2004) The Joint Ore Reserves Committee of The Australasian Institute of Mining and Metallurgy, Australian Institute of Geoscientists and Minerals Council of Australia, Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves, viewed 10 April 2013, .
Matheron, G. (1963) Principles of geostatistics, Economic Geology, Society of Economic Geologists, Vol. 58, pp. 1246-1266.
Matheron, G., Beucher, H., de Fouquet, C., Galli, A. and Ravenne, C. (1987) Conditional simulation of the geometry of fluvio-deltaic reservoirs. Paper SPE 16753, presented at Dallas, TX, 591-599.
Read, J.R.L. (1994) Risk analysis and uncertainty in open pit mining, in Proceedings 4th Large Open Pit Mining Conference, 5−9 September 1994, Perth, Australia, Australian Institute of Mining and Metallurgy, Perth, pp. 139–143.
Read, J.R.L. and Stacey, P. (2009) Guidelines for open pit slope design, CSIRO Publishing, Melbourne.

© Copyright 2024, Australian Centre for Geomechanics (ACG), The University of Western Australia. All rights reserved.
View copyright/legal information
Please direct any queries or error reports to