Retreat Mining Pillar Stability

Details

• Personal Author:
  Mark C
• Description:
  Room-and-pillar retreat mining has been growing in popularity because of productive new technology, including remote control continuous miners, ex-tended cuts, and mobile roof supports. Pillar retreat mines can achieve the same high recovery as longwalls, with lower capital costs and greater flexibility. Unfortunately, between 1990 and 1995, nearly 30 percent of all roof and rib fatalities occurred on retreat mining sections. Also, millions of tons of minable coal are left in place each year because of pillar squeezes, floor heave, pillar line roof falls, and pillar bumps. Traditional pillar design methods are of little help due to the complex mining geometrics and abutment pressures that are present during pillar extraction [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Mining Occupational Health Safety Software
• Keywords:
  Analytical-processes Coal-mining Computer-models Geophysics Ground-control Ground-stability Mathematical-models Mining-industry Retreat-mining Room-and-pillar-mining Underground-mining

  More +
• Series:
  Mining Publications
• ISSN:
  0271-3888
• Publisher:
  U.S. Department of Labor, Mine Safety and Health Administration
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRL - Pittsburgh Research Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  15
• NIOSHTIC Number:
  nn:20032085
• Citation:
  Holmes Saf Assn Bull 1998 Nov; :15
• Contact Point Address:
  National Institute for Occupational Safety and Health, Pittsburgh Research Laboratory, 626 Cochrans Mill Road, Pittsburgh, PA 15236
• Federal Fiscal Year:
  1999
• Peer Reviewed:
  False
• Source Full Name:
  Holmes Safety Association Bulletin
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:1e174671f77302b7c10fa0dc7229d79c7db238991457611aa6842cf068dfeb33e205fc041b951a4af1a911d085894c08f49f373606e4f8492aed3eefc073f6a6
• Download URL:
  https://stacks.cdc.gov/view/cdc/226760/cdc_226760_DS1.pdf
• File Type:
  [PDF - 201.23 KB ]