X. Bai, Denis Marcotte, Michel Gamache, D. Gregory and A. Lapworth
Article (2018)
Open Acess document in PolyPublie and at official publisher |
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Open Access to the full text of this document Published Version Terms of Use: Creative Commons Attribution Download (1MB) |
Abstract
The design of pushbacks in an open pit mine has a significant impact on the mine's profitability. Automatic generation of practical pushbacks is a highly desirable feature, but current automatic solutions fail to sufficiently account for complex geometric requirements of pushbacks, including slopes, phase bench and bottom width, smoothness, and continuity. In this paper, we present a tool to fill this gap. Our proposed algorithm is based on modification of sets of blocks obtained by parametric optimization of the pit using a maximum flow method. A set of geometric operators is developed to modify the sets to present a feasible geometry for mining. The geometric operators are essentially derived from mathematical morphological tools. Case studies show that the proposed method generates practical pushback designs that meet all geometric constraints. The algorithm can be used to create a solution for medium-size pits in minutes. This significantly improves the efficiency of designing pushbacks for open pit mines.
Uncontrolled Keywords
pushbacks, geometric constraints, bench width, open pit planning, image processing, mathematical morphology
Subjects: |
1400 Mining and mineral processing > 1400 Mining and mineral processing 1400 Mining and mineral processing > 1401 Mining engineering |
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Department: |
Department of Mathematics and Industrial Engineering Department of Civil, Geological and Mining Engineering |
Research Center: | GERAD - Research Group in Decision Analysis |
Funders: | CRSNG/NSERC - Engage and Engage Plus Grants, Mitacs Accelerate, Datamine Software Inc., CRSNG/NSERC |
Grant number: | RGPIN-2015- 06653 |
PolyPublie URL: | https://publications.polymtl.ca/4765/ |
Journal Title: | Journal of the Southern African Institute of Mining and Metallurgy (vol. 118, no. 5) |
Publisher: | The Southern African Institute of Mining and Metallurgy |
DOI: | 10.17159/2411-9717/2018/v118n5a8 |
Official URL: | https://doi.org/10.17159/2411-9717/2018/v118n5a8 |
Date Deposited: | 17 Mar 2021 10:55 |
Last Modified: | 26 Sep 2024 23:57 |
Cite in APA 7: | Bai, X., Marcotte, D., Gamache, M., Gregory, D., & Lapworth, A. (2018). Automatic generation of feasible mining pushbacks for open pit strategic planning. Journal of the Southern African Institute of Mining and Metallurgy, 118(5), 515-530. https://doi.org/10.17159/2411-9717/2018/v118n5a8 |
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