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Proceeding Paper

Parametric Analysis of Rib Pillar Stability in a Longitudinal Sublevel Open Stoping Operation in an Underground Copper Mine in Southern Africa †

by
Kostas Kaklis
1,*,
Zach Agioutantis
2,
Munyindei Masialeti
1,
Jerome Yendaw
1 and
Thierry Bineli Betsi
1
1
Department of Mining and Geological Engineering, Botswana International University of Science and Technology, Palapye 10071, Botswana
2
Department of Mining Engineering, University of Kentucky, Lexington, KY 40506, USA
*
Author to whom correspondence should be addressed.
†
Presented at International Conference on Raw Materials and Circular Economy, Athens, Greece, 5–9 September 2021.
Mater. Proc. 2021, 5(1), 11; https://doi.org/10.3390/materproc2021005011
Published: 9 November 2021
(This article belongs to the Proceedings of International Conference on Raw Materials and Circular Economy)
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Abstract

The pillar stability factor (PSF) is calculated in three different mining stages for a sublevel open stoping mining project located in northern Botswana. Several three-dimensional finite element models were developed by varying the stope span. Pillar strength was estimated using the Lunder and Pakalnis equation and pillar stress was obtained from the numerical models. As mining progresses, both the first and second mining stages meet the rib pillar stability factor requirement for safe extraction. Geometrical improvements are suggested in the mining layout for the third mining stage to achieve the required PSF, which is based on international practices.
Keywords: sublevel open stoping; 3D numerical modeling; pillar stability; metalliferous mining sublevel open stoping; 3D numerical modeling; pillar stability; metalliferous mining

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MDPI and ACS Style

Kaklis, K.; Agioutantis, Z.; Masialeti, M.; Yendaw, J.; Betsi, T.B. Parametric Analysis of Rib Pillar Stability in a Longitudinal Sublevel Open Stoping Operation in an Underground Copper Mine in Southern Africa. Mater. Proc. 2021, 5, 11. https://doi.org/10.3390/materproc2021005011

AMA Style

Kaklis K, Agioutantis Z, Masialeti M, Yendaw J, Betsi TB. Parametric Analysis of Rib Pillar Stability in a Longitudinal Sublevel Open Stoping Operation in an Underground Copper Mine in Southern Africa. Materials Proceedings. 2021; 5(1):11. https://doi.org/10.3390/materproc2021005011

Chicago/Turabian Style

Kaklis, Kostas, Zach Agioutantis, Munyindei Masialeti, Jerome Yendaw, and Thierry Bineli Betsi. 2021. "Parametric Analysis of Rib Pillar Stability in a Longitudinal Sublevel Open Stoping Operation in an Underground Copper Mine in Southern Africa" Materials Proceedings 5, no. 1: 11. https://doi.org/10.3390/materproc2021005011

APA Style

Kaklis, K., Agioutantis, Z., Masialeti, M., Yendaw, J., & Betsi, T. B. (2021). Parametric Analysis of Rib Pillar Stability in a Longitudinal Sublevel Open Stoping Operation in an Underground Copper Mine in Southern Africa. Materials Proceedings, 5(1), 11. https://doi.org/10.3390/materproc2021005011

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