Investigating the Factors Affecting the Stability of Coal Ribs with In-Seam Rock Partings Through Numerical Simulations

Details

• Personal Author:
  Mohamed K ; Xue Y
• Description:
  Researchers from the National Institute for Occupational Safety and Health (NIOSH) have been working on the development of an engineering-based rib control method through the developed coal mass numerical model and strength reduction technique. The Coal Pillar Rib Rating (CPRR) was originally introduced to characterize the quality of solid coal ribs. In this study, the CPRR technique is updated to address coal ribs with in-seam rock partings. The rib factor of safety is a key parameter in calculating the CPRR. Therefore, a parametric study was conducted to determine the factor of safety of ribs with an in-seam rock parting under different mining scenarios and rib conditions. Statistical analysis was carried out on 1,842 cases to investigate the influence of various factors on the stability of coal ribs with in-seam rock partings. The results show that overburden depth, bedding condition, minimum coal strength, coal unit thickness, and parting strength have observable influence on rib stability, while the parting thickness and location were found to have negligible influence on rib stability. The statistical analysis of the data can be helpful for understanding the logic behind the CPRR technique. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Geology Mining Occupational Health Safety
• Keywords:
  Coal Mining Ground Control Ground Monitoring Models Pillar Mechanics Rock Mechanics Underground Mines
• Series:
  Mining Publications
• Publisher:
  Society for Mining, Metallurgy & Exploration, Inc. (SME)
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PMRD - Pittsburgh Mining Research Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-10
• NIOSHTIC Number:
  nn:20064705
• Citation:
  Proceedings of the 40th International Conference on Ground Control in Mining (ICGCM 2021), July 27-28, 2021, virtual event. Englewood, CO: Society for Mining, Metallurgy & Exploration, Inc. (SME), 2021 Jul; :1-10
• Federal Fiscal Year:
  2021
• NORA Priority Area:
  Mining
• Peer Reviewed:
  False
• Source Full Name:
  Proceedings of the 40th International Conference on Ground Control in Mining (ICGCM 2021), July 27-28, 2021, virtual event
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:2c6048055690188233f1d02afb10db29af5167f1e743186d844ecca2f5316e0d13af90c88f615d1a8e0032d58341e904476afede1b00ec8356d9aa5b6dfb2984
• Download URL:
  https://stacks.cdc.gov/view/cdc/215459/cdc_215459_DS1.pdf
• File Type:
  [PDF - 1.75 MB ]