An analytical solution for evaluating the safety of an exposed face in a paste backfill stope incorporating the arching phenomenon

Xu Zhao; Andy Fourie; Chong-chong Qi

doi:10.1007/s12613-019-1885-7

Volume 26 Issue 10

Oct. 2019

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2019 > 26(10): 1206-1216

Xu Zhao, Andy Fourie, and Chong-chong Qi, An analytical solution for evaluating the safety of an exposed face in a paste backfill stope incorporating the arching phenomenon, Int. J. Miner. Metall. Mater., 26(2019), No. 10, pp. 1206-1216. https://doi.org/10.1007/s12613-019-1885-7

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Xu Zhao, Andy Fourie, and Chong-chong Qi, An analytical solution for evaluating the safety of an exposed face in a paste backfill stope incorporating the arching phenomenon, Int. J. Miner. Metall. Mater., 26(2019), No. 10, pp. 1206-1216. https://doi.org/10.1007/s12613-019-1885-7

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Research Article

An analytical solution for evaluating the safety of an exposed face in a paste backfill stope incorporating the arching phenomenon

+ Author Affiliations

Corresponding author:
Chong-chong Qi E-mail: 21948042@student.uwa.edu.au
Received: 31 May 2019; Revised: 25 June 2019; Accepted: 27 June 2019

Abstract

Abstract

In current underground mining, the stability of the exposed backfill face is a basic issue associated with mining design and has been the subject of considerable research in mining safety and efficiency. In this study, an improved analytical solution for evaluating the safety of vertically exposed faces in backfilling was proposed. Based on a differential slice method, the proposed solution emphasizes the arching effect as having the advantages of more rigor and wider scalability. Feasibility of the proposed solution was validated with classic centrifuge results. Good agreement between compared results indicated that the proposed solution skillfully predicts the behavior of the paste centrifuge model. Additionally, calculation of exposed face safety in sequential filling was presented. The proposed solution has practical significance in mine backfill design.
- mine safety;
- cemented paste backfill;
- exposed face;
- arching;
- sequential filling

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References

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