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
• Publisher:
  Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health
• 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:
  63-71
• NIOSHTIC Number:
  nn:20032067
• Citation:
  Proceedings: New Technology for Ground Control in Multiple-Seam Mining. Mark C; Tuchman RJ, eds., Pittsburgh, PA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 2007 May; :63-71
• Federal Fiscal Year:
  2007
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:9601307fba4f4680a9e8db66cacf454842b44a443a93d694577173d0cace9d0c23d7fd3fe6bf2652aed7f1874b69ec480aa7c049f9db1f8d06daf11245f1ed23
• Download URL:
  https://stacks.cdc.gov/view/cdc/226757/cdc_226757_DS1.pdf
• File Type:
  [PDF - 3.18 MB ]