Development of a Water Jet Assisted Cutterhead for Coal Measure Rocks

Details

• Personal Author:
  Ozdemir L
• Description:
  The results of a laboratory research program aimed at the development of a water jet assisted drag bit cutting system for coal mine applications are presented. Two types of drag bits, a conical and a plow bit, were tested in a hard sandstone rock with jet pressures of up to 20,000 psi. Jet locations investigated were in front of and behind the bits. For each jet mounting location, three jet impingement distances with respect to bit tip were tested. The closest jet impingement location to bit tip was found most effective, providing the greatest force reductions on the bit. Overall, significant bit force reductions up to 50 percent were obtained with jet assist. Also observed was a drastic reduction in airborne dust when jets were employed. [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Open File Report
• Document Type:
  Text
• Genre:
  Conference Publications ; Final Contract Report
• Place as Subject:
  Colorado ; OSHA Region 8
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-95
• NIOSHTIC Number:
  nn:10005153
• NTIS Accession Number:
  PB86-217692
• Citation:
  NTIS: PB 86-217692 :95 pages
• Federal Fiscal Year:
  1986
• Performing Organization:
  Colorado School of Mines
• Peer Reviewed:
  False
• Source Full Name:
  NTIS: PB 86-217692
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:ca5df03ffece713b2b9af949375b1e9f7a1fffcecbd3eedcdeaab883bdde048f16a741685b7db2f919898696f87a1b71be9f859e7afc442389d6dcc5ef8c81a7
• Download URL:
  https://stacks.cdc.gov/view/cdc/234674/cdc_234674_DS1.pdf
• File Type:
  [PDF - 4.70 MB ]