Examination of Redirected Continuous Miner Scrubber Discharge Configurations for Exhaust Face Ventilation Systems

Details

• Personal Author:
  Beck, Timothy W. ; Organiscak, John A.
• Description:
  The National Institute for Occupational Safety and Health (NIOSH) Office of Mine Safety and Health Research (OMSHR) has recently studied several redirected scrubber discharge configurations in its full-scale continuous miner gallery for both dust and gas control when using an exhaust face ventilation system. Dust and gas measurements around the continuous mining machine in the laboratory showed that the conventional scrubber discharge directed outby the face with a 12.2-m (40-ft) exhaust curtain setback appeared to be one of the better configurations for controlling both dust and gas. Redirecting all the air towards the face equally up both sides of the machine increased both the dust and gas concentrations around the machine. When all the air was redirected towards the face on the off-curtain side of the machine, gas accumulations tended to be reduced at the face at the expense of increased dust levels in the return and on the curtain side of the mining machine. A 6.1-m (20-ft) exhaust curtain setback without the scrubber operating resulted in the lowest dust levels around the continuous mining machine, but this configuration resulted In some of the highest levels of dust in the return and gas on the off-curtain side of the mining face. Two field studies showed some similarities to the laboratory findings, with elevated dust levels at the rear corners of the continuous miner when all the scrubber exhaust was redirected towards the face either up the off-tubing side or equally up both sides of the mining machine [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Engineering Mining Occupational Health Safety Staff Development
• Keywords:
  Coal-dust Coal-mining Control-systems Control-technology Dust-analysis Dust-control Dust-control-equipment Dust-measurement Dust-particles Dust-suppression Engineering-controls Gases Measurement-equipment Mining-industry Respirable-dust Sampling Scrubbers Underground-mining Ventilation

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• Series:
  Mining Publications
• Publisher:
  Society for Mining, Metallurgy, and Exploration, Inc.
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  Colorado ; OSHA Region 3 ; OSHA Region 8 ; Pennsylvania ; Utah
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  OMSHR - Office of Mine Safety and Health Research
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-7
• NIOSHTIC Number:
  nn:20045384
• Citation:
  2014 SME Annual Meeting, February 23-26, Salt Lake City, Utah, Preprint 14-002. Englewood, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2014 Feb; :1-7
• Federal Fiscal Year:
  2014
• NORA Priority Area:
  Mining
• Peer Reviewed:
  False
• Source Full Name:
  2014 SME Annual Meeting, February 23-26, Salt Lake City, Utah, Preprint 14-002
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:0c30a5eca350dff5fca8573e54ea5970464c92fb8edf56cb13fd7816bc552189b0256dc9a6a56c6626f757a3528e6678b1b08baebeaa7c4a29d2f20591a27e3f
• Download URL:
  https://stacks.cdc.gov/view/cdc/228076/cdc_228076_DS1.pdf
• File Type:
  [PDF - 395.16 KB ]