Abstract
There Has Been a Global Effort in the Past Decade, Especially in Major Coal-Producing Countries, toward Understanding the Mechanics Involved in the Stability of Coal Mine Ribs. Buckling and Spalling of Mine Ribs Are Known to Have an Impact on their Stability and Degradation. the Generation, Propagation, and Coalescence of Cracks in Mine Pillar Ribs Are Significantly Affected by the overburden Depths. in Addition, the in Situ Stress Magnitudes Tend to Affect the Rib Damage Process. High Horizontal Stresses and Increased Depths Can Lead to Unfavorable Stress Conditions, Inducing Coal Mass Damage and Strength Loss. Understanding the Dynamics Involved in Rib Behavior Will Inform Better Rib Control Practices. This Study Intended to Assess the Effect of Mining Depth, Mining Height, and Supports on Coal Mine Rib Stability. in This Research, the Response of the Coal Mass Was Studied using Distinct Element Modeling to Better Understand the Failure Process of Coal Mine Ribs. the Study Confirmed Mining Depth as a Significant Factor Controlling the Rib Loading and Failure Mechanism. in Addition, Increased Mining Heights Increased the Rib Deformation and Failure Process. the Evaluated Support Effect Revealed that at Shallower Depths, Shorter Bolt Lengths Are Sufficient to Control Rib Stability. Increasing the Bolt Length for Depths Greater Than 250 M is in Order, But Higher Depths Do Not Correlate with Longer Supports. the Approach Used in This Study Demonstrated its Capacity to Be Used in Designing Rib Support Requirements and Understanding Coal Mass and Support Mechanisms.
Recommended Citation
M. Sunkpal et al., "Evaluating the Effect of overburden Depth, Mining Height, and Support Density on Coal Rib Damage using DEM Modeling," Geosciences (Switzerland), vol. 13, no. 3, article no. 77, MDPI, Mar 2023.
The definitive version is available at https://doi.org/10.3390/geosciences13030077
Department(s)
Mining Engineering
Keywords and Phrases
coal rib stability; in situ stresses' mining depth; mine rib deformation; mining height; support effect
International Standard Serial Number (ISSN)
2076-3263
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2023 The Authors, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution 4.0 License.
Publication Date
01 Mar 2023
Comments
National Institute for Occupational Safety and Health, Grant None