Multiple-Seam Mining Interactions: Case Histories from the Harris No. 1 Mine

Details

• Personal Author:
  Chase, Frank E. ; Mark C ; Worley P
• Description:
  The Harris No. 1 Mine in Boone County, WV, has been longwalling the Eagle Coalbed for over 30 years. Harris has experienced numerous interactions associated with the extensive room-and-pillar and longwall mining operations that have been conducted in the overlying No. 2 Gas Coalbed. The problems have included roof falls, excessive rib sloughage, and gate road and bleeder entry closure. A detailed evaluation of the multiple-seam experiences at Harris No. 1 Mine was done as part of NIOSH's nationwide multiple-seam mining case history database. One observation was that smaller, critically loaded, upper-seam pillars seemed to cause more severe ground conditions than wider pillars. The LaMODEL program was used to investigate this. Results confirmed that critical-sized pillars transmit the highest amounts of stress to adjacent seams. In addition, the data suggest that the probability of a major multiple-seam mining interaction increases when the depth of cover is 1,000 ft or greater and when the Eagle Seam pillars have an ALPS stability factor of less than 1.50. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Geology Mining Occupational Health Safety
• Keywords:
  Coal-mining Ground-control Hazards Injuries Longwall-mining Mining-industry Models Multiple-seam-mining Safety-research
• Series:
  Mining Publications
• ISBN:
  0939084569
• Publisher:
  West Virginia University
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  OSHA Region 3 ; Pennsylvania ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRL - Pittsburgh Research Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  79-86
• NIOSHTIC Number:
  nn:20028270
• Citation:
  Proceedings of the 24th International Conference on Ground Control in Mining, August 2-4, 2005, Morgantown, West Virginia. Peng SS, Mark C, Tadolini SC, Finfinger GL, Khair AW, Heasley KA, eds. Morgantown, WV: West Virginia University, 2005 Aug; :79-86
• Contact Point Address:
  NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
• Editor(s):
  Peng SS; Mark C; Tadolini SC; Finfinger GL; Khair AW; Heasley KA
• Federal Fiscal Year:
  2005
• NORA Priority Area:
  Research Tools and Approaches: Control Technology and Personal Protective Equipment
• Peer Reviewed:
  False
• Source Full Name:
  Proceedings of the 24th International Conference on Ground Control in Mining, August 2-4, 2005, Morgantown, West Virginia
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:a8cb51e3070315001584d30fc3ad4b74c68b1166dbdb3c12b352afd7bd4c8e5e5173f947c5498c2011183b0852acb09a61e9535adfa57bce21128bbafc3752d3
• Download URL:
  https://stacks.cdc.gov/view/cdc/221099/cdc_221099_DS1.pdf
• File Type:
  [PDF - 1000.08 KB ]