Rib Support Optimization for a Room-and-Pillar Mine

Details

• Personal Author:
  Kimutis R ; Mohamed K ; Rashed G ; Xue Y
• Description:
  The National Institute for Occupational Safety and Health (NIOSH) conducted a monitoring field study to optimize the rib control plan in a room-and-pillar coal mine. The study mine is located in the Central Appalachia coal basin. Two monitoring sites were selected at different sections in the study mine. The selected sites have different overburden depths and geologies. The instrumentation plans at study sites include borehole pressure cells installed at various depths in studied pillars, rib and roof extensometers and load cells mounted on number of the rib bolts. The instrumentation results and observed geology for one of the study sites showed great potential for optimizing the rib bolt plan at that section of the mine. Therefore, a rib support optimization study was followed using numerical modeling technique. A calibrated three-dimensional model was developed using the instrumentation results of the optimization section. The calibrated model was used to determine the optimum rib support for expected overburden depths and rib heights. Baseline rib bolt patterns were assumed for the optimization study. Additional rib bolts, above and beyond the baseline bolting parameters, were outlined and identified as solutions to contain the rib fracturing identified by the modeling results. [Description provided by NIOSH]
• Subjects:
  Mining Occupational Health Safety
• Keywords:
  Coal Mines Ground Control Ground Monitoring Mining Engineering Models Pillar Design Pillar Mechanics Room And Pillar Mining Underground Mines
• Series:
  Mining Publications
• ISBN:
  9780873354806
• 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:
  247-256
• NIOSHTIC Number:
  nn:20061165
• Citation:
  Proceedings of the 39th International Conference on Ground Control in Mining (ICGCM 2020), July 28-30, 2020, Canonsburg, Pennsylvania. Klemetti T, Mishra B, Lawson H, Murphy M, Perry K eds. Englewood, CO: Society for Mining, Metallurgy & Exploration, Inc. (SME), 2020 Jul; :247-256
• Editor(s):
  Klemetti T; Mishra B; Lawson H; Murphy M; Perry K
• Federal Fiscal Year:
  2020
• NORA Priority Area:
  Mining
• Peer Reviewed:
  False
• Source Full Name:
  Proceedings of the 39th International Conference on Ground Control in Mining (ICGCM 2020), July 28-30, 2020, Canonsburg, Pennsylvania
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:320344493d568c293a3e617385dba783a56e66140ae4ea314c71f64e129d5dccd6f5df90b8eceb44b373772c87704b2793c0bb60abad38dc88f8a8dc335c29e2
• Download URL:
  https://stacks.cdc.gov/view/cdc/215328/cdc_215328_DS1.pdf
• File Type:
  [PDF - 856.91 KB ]