Modelling cave mining in the geotechnical centrifuge

S.W. Jacobsz, E. Kearsley, Daniel Cumming-Potvin, Johan Wesseloo

Research output: Chapter in Book/Conference paperConference paper

Abstract

A model study was undertaken using centrifuge modelling to investigate the mechanism of cave propagation occurring in cave mines. Cave mining involves controlled undercutting of ore bodies in deep mines, allowing the rock mass to fracture under in situ stress. The paper describes a weak artificial rock mass that was developed and presents results from tests in which caving was observed under conditions of high and low horizontal stress. Comments on appropriate scaling relations is presented. It was found that rock fracture occurred by means of extensional fracture banding, which differs from the Duplancic conceptual model, commonly accepted to describe processes associated with cave advancement.
Original languageEnglish
Title of host publicationPhysical Modelling in Geotechnics, Volume 2
Subtitle of host publicationProceedings of the 9th International Conference on Physical Modelling in Geotechnics (ICPMG 2018), July 17-20, 2018, London, United Kingdom
EditorsAndrew McNamara, Sam Divall, Richard Goodey, Neil Taylor, Sarah Stallebrass, Jignasha Panchal
PublisherCRC Press
Pages809-814
Number of pages6
ISBN (Electronic)9780429797620
Publication statusPublished - 2018
Event9th International Conference on Physical Modelling in Geotechnics, ICPMG 2018 - London, United Kingdom
Duration: 17 Jul 201820 Jul 2018
Conference number: 9

Conference

Conference9th International Conference on Physical Modelling in Geotechnics, ICPMG 2018
Abbreviated titleICPMG 2018
CountryUnited Kingdom
CityLondon
Period17/07/1820/07/18

Fingerprint

centrifuge
cave
modeling
rock
centrifugal model test
caving
in situ stress
ore body

Cite this

Jacobsz, S. W., Kearsley, E., Cumming-Potvin, D., & Wesseloo, J. (2018). Modelling cave mining in the geotechnical centrifuge. In A. McNamara, S. Divall, R. Goodey, N. Taylor, S. Stallebrass, & J. Panchal (Eds.), Physical Modelling in Geotechnics, Volume 2: Proceedings of the 9th International Conference on Physical Modelling in Geotechnics (ICPMG 2018), July 17-20, 2018, London, United Kingdom (pp. 809-814). CRC Press.
Jacobsz, S.W. ; Kearsley, E. ; Cumming-Potvin, Daniel ; Wesseloo, Johan. / Modelling cave mining in the geotechnical centrifuge. Physical Modelling in Geotechnics, Volume 2: Proceedings of the 9th International Conference on Physical Modelling in Geotechnics (ICPMG 2018), July 17-20, 2018, London, United Kingdom. editor / Andrew McNamara ; Sam Divall ; Richard Goodey ; Neil Taylor ; Sarah Stallebrass ; Jignasha Panchal. CRC Press, 2018. pp. 809-814
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abstract = "A model study was undertaken using centrifuge modelling to investigate the mechanism of cave propagation occurring in cave mines. Cave mining involves controlled undercutting of ore bodies in deep mines, allowing the rock mass to fracture under in situ stress. The paper describes a weak artificial rock mass that was developed and presents results from tests in which caving was observed under conditions of high and low horizontal stress. Comments on appropriate scaling relations is presented. It was found that rock fracture occurred by means of extensional fracture banding, which differs from the Duplancic conceptual model, commonly accepted to describe processes associated with cave advancement.",
author = "S.W. Jacobsz and E. Kearsley and Daniel Cumming-Potvin and Johan Wesseloo",
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editor = "Andrew McNamara and Sam Divall and Richard Goodey and Neil Taylor and Sarah Stallebrass and Jignasha Panchal",
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Jacobsz, SW, Kearsley, E, Cumming-Potvin, D & Wesseloo, J 2018, Modelling cave mining in the geotechnical centrifuge. in A McNamara, S Divall, R Goodey, N Taylor, S Stallebrass & J Panchal (eds), Physical Modelling in Geotechnics, Volume 2: Proceedings of the 9th International Conference on Physical Modelling in Geotechnics (ICPMG 2018), July 17-20, 2018, London, United Kingdom. CRC Press, pp. 809-814, 9th International Conference on Physical Modelling in Geotechnics, ICPMG 2018, London, United Kingdom, 17/07/18.

Modelling cave mining in the geotechnical centrifuge. / Jacobsz, S.W.; Kearsley, E.; Cumming-Potvin, Daniel; Wesseloo, Johan.

Physical Modelling in Geotechnics, Volume 2: Proceedings of the 9th International Conference on Physical Modelling in Geotechnics (ICPMG 2018), July 17-20, 2018, London, United Kingdom. ed. / Andrew McNamara; Sam Divall; Richard Goodey; Neil Taylor; Sarah Stallebrass; Jignasha Panchal. CRC Press, 2018. p. 809-814.

Research output: Chapter in Book/Conference paperConference paper

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AB - A model study was undertaken using centrifuge modelling to investigate the mechanism of cave propagation occurring in cave mines. Cave mining involves controlled undercutting of ore bodies in deep mines, allowing the rock mass to fracture under in situ stress. The paper describes a weak artificial rock mass that was developed and presents results from tests in which caving was observed under conditions of high and low horizontal stress. Comments on appropriate scaling relations is presented. It was found that rock fracture occurred by means of extensional fracture banding, which differs from the Duplancic conceptual model, commonly accepted to describe processes associated with cave advancement.

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PB - CRC Press

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Jacobsz SW, Kearsley E, Cumming-Potvin D, Wesseloo J. Modelling cave mining in the geotechnical centrifuge. In McNamara A, Divall S, Goodey R, Taylor N, Stallebrass S, Panchal J, editors, Physical Modelling in Geotechnics, Volume 2: Proceedings of the 9th International Conference on Physical Modelling in Geotechnics (ICPMG 2018), July 17-20, 2018, London, United Kingdom. CRC Press. 2018. p. 809-814