Evaluating Vertical Stress in Backfilled Inclined Mine Stopes: Insights from Numerical Modeling and Monte Carlo Simulations

DOI

10.2991/978-94-6463-900-1_9How to use a DOI?

Keywords

Inclined Mine Stope; Monte Carlo Simulations; Numerical Modelling; Vertical Stress

Abstract

The stability of underground mine excavations is frequently im proved through the technique of backfilling, which enhances both environmental sustainability and operational efficiency. Accurately assessing vertical stress (σₓ) in inclined mine stopes with backfill is essential for the safe and optimal design of mining operations. This study uses numerical methods to evaluate vertical stress in an inclined narrow stope, measuring 90 m in height, 24 m in width, and with a base depth of 250 m, using RS2 software. The necessary geomechanical parameter datasets for the back fill were obtained via systematic laboratory testing of materials collected from the Niobec mine in Quebec. Vertical stress in the backfilled stope was then determined using both numerical and analytical solutions, employing both deterministic and probabilistic approaches. Initial numerical results show strong agreement with analytical methods, confirming the accuracy of the numerical model. Further validation using Monte Carlo simulations indicates that vertical stress values for various stope geometries and inclinations are consistent with analytical predictions. Standard deviations increase with depth and vary with stope inclination, with higher deviations observed at greater depths. Despite these variations, the overall trends remain consistent across all simulations. The results validate the numerical approach for assessing vertical stress in inclined mine stopes, highlighting its reliability for mine design and stability analysis.

Copyright

© 2025 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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TY  - CONF
AU  - Ali Saeidi
AU  - Rama Vara Prasad Chavali
AU  - Alireza Azami
PY  - 2025
DA  - 2025/12/07
TI  - Evaluating Vertical Stress in Backfilled Inclined Mine Stopes: Insights from Numerical Modeling and Monte Carlo Simulations
BT  - Proceedings of the Rocscience International Conference 2025 (RIC 2025)
PB  - Atlantis Press
SP  - 93
EP  - 101
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-900-1_9
DO  - 10.2991/978-94-6463-900-1_9
ID  - Saeidi2025
ER  -