Proceedings of the Rocscience International Conference (RIC 2023)

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Back Analysis of Narrow Vein Open Stope Stability and Verification Using Kinematic and Empirical Methods

Authors
David Saiang1, *
1Lulea University of Technology, 97187, Lulea, Sweden
*Corresponding author. Email: david.saiang@ltu.se
Corresponding Author
David Saiang
Available Online 8 November 2023.
DOI
10.2991/978-94-6463-258-3_3How to use a DOI?
Keywords
narrow vein orebody; stope stability; back analyses; empirical stability graph analysis; kinematic analysis
Abstract

High walls of open stopes in underground stoping mines can be considered to behave in a similar manner to open pit slopes if stability is largely controlled by geological structures. With this assumption the kinematic method of analyses can be used to assess the stability of the footwall, hangingwall, the roof and floor of an open stope. This paper demonstrates the application of kinematic analyses tools such as Rocscience’s DIPS® and UNWEDGE® to assess the stability of underground stopes in a narrow vein mine. A back analysis was conducted, using both kinematic methods and the empirical stability graph method, after field investigation of stope failures and review of stope closure reports. The stability graph method showed that the designed stopes were stable with support. However, majority of the stopes audited have apparently failed or were in state of failure, i.e., unstable. Kinematic analyses showed that these stopes were certainly at risk of failure which confirmed the observations. The stability chart used by the mine was eventually adjusted based on the kinematic analyses and observations made, resulting in the stability graph having only three regions: stable, unstable and fail.

Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the Rocscience International Conference (RIC 2023)
Series
Atlantis Highlights in Engineering
Publication Date
8 November 2023
ISBN
978-94-6463-258-3
ISSN
2589-4943
DOI
10.2991/978-94-6463-258-3_3How to use a DOI?
Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - David Saiang
PY  - 2023
DA  - 2023/11/08
TI  - Back Analysis of Narrow Vein Open Stope Stability and Verification Using Kinematic and Empirical Methods
BT  - Proceedings of the Rocscience International Conference  (RIC 2023)
PB  - Atlantis Press
SP  - 13
EP  - 22
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-258-3_3
DO  - 10.2991/978-94-6463-258-3_3
ID  - Saiang2023
ER  -