Report of Investigations 9148: Leakage and Performance Characteristics of Large Stoppings for Room-and-Pillar Mining

Details

• Journal Article:
  MISSING
• Personal Author:
  Adam, Marvin E. ; Agapito, Joseph F. T. ; Brechtel, Carl E. ; Thimons, Edward D.
• Description:
  This report presents a Bureau of Mines study comparing the construction costs, leakage measurements, and predicted performance of different types of large stoppings built and tested in a room-and- pillar oil shale mine. The six full-sized structures (30 ft high by 55 ft wide) included both permanent and temporary stoppings and were fabricated using materials ranging from structural steel to coated brattice cloth. Leakage across each stopping was measured at differential pressures ranging up to 1.0 In w.G., Using both the brattice window method and sulfur hexafluoride (sf6) tracer gas. Blast air pressures resulting from a full-scale face blast of approximately 1,800 lb of ammonium nitrate-fuel oil (anfo) explosives were measured across two of the stoppings, and the pre- and post-leakage rates were compared for all the stoppings. Overall performance of the stoppings for production applications was evaluated using an operational model of a two-panel oil shale mine. Different combinations of temporary and permanent stoppings were evaluated based upon ventilation performance and construction and operating costs. [Description provided by NIOSH]
• Subjects:
  Mining Occupational Health Safety
• Source:
  MISSING :17 pages
• Series:
  NIOSH Numbered Publications   ; Mining Publications  
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Report
• Place as Subject:
  United States
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  22 pdf pages
• NIOSHTIC Number:
  nn:10005956
• Federal Fiscal Year:
  1988
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:741d76faf22ef5db98dfb7aefbbbd109b23e6b69c14f894ba36a4f1c725f5f318009187de22fc96208386709cc43d3e05335432aa0ff0f01d8d84d9ad937fdd5
• Download URL:
  https://stacks.cdc.gov/view/cdc/10578/cdc_10578_DS1.pdf
• File Type:
  [PDF - 987.39 KB ]