Application of three-dimensional limit equilibrium in the slope stability assessment process

Authors: Dwumfour, D; Dixon, J; Croft, P; Fredlund, M Download Paper

DOI https://doi.org/10.36487/ACG_repo/2135_05

Cite As:
Dwumfour, D, Dixon, J, Croft, P & Fredlund, M 2021, 'Application of three-dimensional limit equilibrium in the slope stability assessment process', in PM Dight (ed.), SSIM 2021: Second International Slope Stability in Mining, Australian Centre for Geomechanics, Perth, pp. 121-132, https://doi.org/10.36487/ACG_repo/2135_05



Abstract:
The utilisation of three-dimensional limit equilibrium in evaluating open pit slope stability is becoming increasingly common in the industry. Implementation of this assessment approach requires developing new assessment workflows associated with the model inputs to ensure confidence in the modelling outcomes and leveraging the full benefits of the approach. Several challenges also exist in terms of understanding data reliability and software capability; a particular limitation identified was the practical application of the disturbance zone behind the slope. This paper provides a workflow adopted to ensure high confidence in the modelling outcomes and communication of the assessment results using a case study and highlights the software developments to address limitations.

Keywords: geotechnical, slope stability analysis

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