Improving Check Curtains, Line Curtains and Extensible Face Ventilation Systems

Details

• Personal Author:
  Bartlett PT ; Muldoon TL ; Schroeder WE
• Description:
  A fieldworthy 10-ft extensible brattice to maintain a 10-ft setback was found in use in two mines on continuous miner faces. The technique was evaluated in the laboratory for leakage and methane control at the face. Significant results include the following: (1) air leakage through a gap in the extensible curtain depends upon the ratio of the cross-sectional areas between entry and return as well as gap area, (2) gap shape has no significant effect on methane concentrations at the face--increasing gap area diminishes ventilation effectiveness, and (3) substantial reductions of ch4 concentrations at the face were accomplished by brattice extensions with gaps up to 5 ft2 in area. An inby hook, inserted in the roof automatically to make possible the deployment of a longer brattice extension in the context of a remotely controlled miner, was tested in various roof types. Insertion of this design succeeded only in coal. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Open File Report
• Document Type:
  Text
• Genre:
  Conference Publications ; Final Contract Report
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-112
• NIOSHTIC Number:
  nn:10002944
• NTIS Accession Number:
  PB83-216242
• Citation:
  NTIS: PB/83-216242; :1-112
• Federal Fiscal Year:
  1982
• Performing Organization:
  Foster-Miller, Inc.
• Peer Reviewed:
  False
• Source Full Name:
  NTIS: PB/83-216242
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:c9ebdef4620a522d913f26d001f9612e79277daddc693702c456803af8fb3afd33c3ae8e1fecec1bba74e2148105c1b6968e5280e913f44dac8590a19d542203
• Download URL:
  https://stacks.cdc.gov/view/cdc/234986/cdc_234986_DS1.pdf
• File Type:
  [PDF - 27.67 MB ]