Extension of Analytical Solution Methods to the Stability of Exposed Stratified Cemented Backfills
Publication: International Journal of Geomechanics
Volume 24, Issue 8
Abstract
The stability analysis of the backfill support system has been a significant analysis of stope performance in stoping mining method. For the past decades, the strength of exposed backfill was preferred to be conducted using analytical solutions based on the limit equilibrium theory. Nevertheless, these solutions have neglected the effect of layering that is endured by the backfill in the large stope. These methods appear to provide unrealistic results in stratified backfill stopes. This study introduces a modified solution that considers the shearing force along the backfill layers interface. The proposed solution method confirms that when the effect of layering is included the solution differs from the existing limit equilibrium solutions. Various examples are provided to validate the proposed analytical solution method.
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Data Availability Statement
All data (safety factors from the analytical solutions) and mathematical models that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The authors would like to thank the University of South Africa for supporting this work. This study did not receive any specific grant from any funding agencies in the public, commercial, or not-for-profit sectors.
Author contributions: Nhleko Monique Chiloane Original draft preparation, Conceptualization: Fhatuwani Sengani Writing- reviewing, and editing, Supervision: Francois Mulenga Supervision, Validation.
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Information & Authors
Information
Published In
International Journal of Geomechanics
Volume 24 • Issue 8 • August 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Sep 13, 2023
Accepted: Feb 2, 2024
Published online: May 17, 2024
Published in print: Aug 1, 2024
Discussion open until: Oct 17, 2024
ASCE Technical Topics:
- Backfills
- Business management
- Cement
- Concrete
- Construction engineering
- Construction methods
- Continuum mechanics
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering materials (by type)
- Engineering mechanics
- Equilibrium
- Excavation
- Forces (type)
- Limit equilibrium
- Materials engineering
- Methodology (by type)
- Practice and Profession
- Public administration
- Public health and safety
- Research methods (by type)
- Safety
- Shear forces
- Solid mechanics
- Statics (mechanics)
- Validation
Authors
Metrics & Citations
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