Proposal of 2D finite element model for square pillar stability analysis

  • Nemanja Đokić University of Belgrade - Faculty of Mining and Geology
  • Miodrag Duranović University of Belgrade - Faculty of Mining and Geology
  • Veljko Lapčević University of Belgrade - Faculty of Mining and Geology
  • Slavko Torbica University of Belgrade - Faculty of Mining and Geology
  • Milenko Petrović University of Pristina – Faculty of Technical Sciences in Kosovska Mitrovica
  • Ljubinko Savić University of Pristina – Faculty of Technical Sciences in Kosovska Mitrovica
Keywords: tributary are method; room and pillar; Finite element method;

Abstract

It is suggested that 2D finite element method models are used for square pillar stability analysis. Equivalent width of strip pillar that is represented by FE models is determined from tributary area method by introducing equivalence of square and strip pillar loads in tributary area method analysis. With FE analysis it is shown that pillar loads are close to expected, but tributary area method is limited to pillars of small heights and with horizontal deposits. Proposed methodology provides opportunity to model much complex conditions and sequencing of excavation with respect of sequential stress redistribution.

References

MAYBEE, W.G. (2000) Pillar design in hard brittle rocks. Thesis (MSc), Laurentian University.

ESTERHUIZEN, G.S., DOLINAR, D.R. and ELLENBERGER, J.L. (2008) Pillar strength and design methodology for stone mines. In: Proceedings of the 27th international conference on ground control in mining. Morgantown WV: West Virginia University. pp. 241-253.

YORK, G., CANBULAT, I. and JACK, B.W. (2000) Coal pillar design procedures.

LUNDER, P.J. (1994) Hard rock pillar strength estimation an applied empirical approach. Thesis (PhD) University of British Columbia.

ROCSCIENCE INC. (2011) Phase2 Version 7.0 -Finite Element Analysis for Excavations and Slopes. Toronto, Ontario, Canada.
Published
2018-12-31
How to Cite
Đokić, N., Duranović, M., Lapčević, V., Torbica, S., Petrović, M., & Savić, L. (2018). Proposal of 2D finite element model for square pillar stability analysis. Podzemni Radovi, (33), 31-40. Retrieved from http://ume.rgf.bg.ac.rs/index.php/ume/article/view/125
Section
Articles

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