Numerical Modelling for Improved Open Pit Optimization

DOI

10.2991/978-94-6463-104-3_10How to use a DOI?

Keywords

Slope Stability; Mining Engineering; Open Pit Optimization; Numerical Modelling

Abstract

Simple open pit optimization using industry standard approaches (e.g. Whittle or NPV scheduler) provides a range of pit shells for an engineer to evaluate and select an optimal pit, and/or interim push backs to which a mine design can be developed. The first optimization step requires the definition of an overall slope angle condition that must be met by any pit shell output by the software. The issue with this is that the inability to increase slope angles for smaller pit shells, may result in a suboptimal early production schedule. This paper outlines how the use of custom slope stability curves generated using numerical modelling techniques can be used to estimate slope angles for sequential pit shells, to generate a slope angle optimized ‘pit-by-pit’ graph. This would allow for maximum flexibility in mine planning focused on increasing revenue in initial push back designs.

Copyright

© 2023 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - S. J. Jackson
PY  - 2023
DA  - 2023/03/01
TI  - Numerical Modelling for Improved Open Pit Optimization
BT  - Proceedings of the TMIC 2022 Slope Stability Conference (TMIC 2022)
PB  - Atlantis Press
SP  - 92
EP  - 102
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-104-3_10
DO  - 10.2991/978-94-6463-104-3_10
ID  - Jackson2023
ER  -