Report of Investigations 8267: Methane Accumulations in Coal Mine Roof Cavities

Details

• Journal Article:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8267
• Personal Author:
  Vinson, Robert P. ; Thimons, Edward D. ; Kissell, Fred N.
• Description:
  The Bureau of Mines investigated the presence and extent of methane accumulations in mine roof cavities using a full-scale mine model. Methane was released at a constant rate into the roof of a cavity built onto a 700-ft wind tunnel. Two box-shaped roof cavities were used in the study: one had a volume of 114.7 Cu ft; and the other had a volume of 57.3 Cu ft. Methane concentration was measured at 28 sampling points in the cavities using 21 different combinations of gas emission rates and air velocities. Brattice hung in the cavity helped reduce methane concentrations without auxiliary ventilation. It was also found that the effective ventilation rate increased by a factor of 40 in the large cavity and by a factor of 20 in the small cavity when air velocity was increased from 100 to 600 ft/min. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Engineering Explosions Methane Mining Occupational Health Safety
• Keywords:
  Mine-gases; Mining-industry; Methanes; Methane-drainage; Methane-control; Explosive-gases; Explosive-atmospheres; Underground-mining; Coal-mining; Control-technology; Engineering-controls; Explosion-prevention; Explosive-hazards
• Source:
  Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8267, 1978 Jan; :1-15
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  19 pdf pages
• NIOSHTIC Number:
  nn:10002521
• NTIS Accession Number:
  PB-277919
• CAS Registry Number:
  Methane (CAS RN 74-82-8)
• Federal Fiscal Year:
  1978
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:5c164e6f3c1993cd67928225c816d97fd1e74b2437eb4eff3906a675d9a319a536c9668163e02c29d3391d4379ebaa36e7046a4a356f2f305f3f7b25946149df
• Download URL:
  https://stacks.cdc.gov/view/cdc/9264/cdc_9264_DS1.pdf
• File Type:
  [PDF - 621.41 KB ]