Full-Panel Screen Testing: More Realistic but What Changes?

Details

• Personal Author:
  Batchler TJ ; Klemetti, Ted M. ; Matthews TJ
• Description:
  How representative are partial-panel screen tests of the in situ response of screen to roof and rib deterioration and displacements? Can a more representative procedure that tests up to two full screen panels improve the utilization and effectiveness of screen as a roof and rib support? This paper details a new full-panel screen test procedure and the initial results. The full-panel test frame was designed to test a 2.4 by 3.6-meter screened area with bolt spacing as small as 0.3-meter increments. The initial design included up to 6 screen pull points, but additional locations can be added to produce a more uniform loading. The test frame was developed to capitalize on the capabilities of the Mine Roof Simulator (MRS) at the Pittsburgh Mining Research Division (PMRD) of the National Institute for Occupational Safety and Health (NIOSH). The initial tests included a baseline test of a partial panel (1.22 by 1.22-m screen section) using the original 1.52 by 1.52-meter test frame, a 1.22 by 1.22-meter screen section test in the new full-panel test frame, and two tests of 2.4 by 3.6-meter screened area in the full-panel test frame. The 1.22 by 1.22-meter screen section tests in the full-panel test frame produced a peak load 6% higher and a yield load 30% lower than the partial-panel (original) test frame. The multiple pull points of the full-panel frame produced variable yield, peak, and intermediate loads, but on average were lower than the single pull-point tests. [Description provided by NIOSH]
• Subjects:
  Mining Occupational Health Risk Assessment Risk Factors Safety
• Keywords:
  Coal Mines Load Monitoring Miners Mining Industry Risk Factors Roof Supports Roof Support Systems Statistical Analysis Testing Equipment Underground Mines Worker Health Worker Safety

  More +
• 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
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PMRD - Pittsburgh Mining Research Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-5
• NIOSHTIC Number:
  nn:20059783
• Citation:
  2019 SME Annual Meeting, February 24-27, 2019, Denver, Colorado, preprint 19-048. Englewood, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2019 Feb; :1-5
• Federal Fiscal Year:
  2019
• Peer Reviewed:
  False
• Source Full Name:
  2019 SME Annual Meeting, February 24-27, 2019, Denver, Colorado, preprint 19-048
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:51a18b5e8f99f01cb594a9bb1af57cfd3c98d9d0eb78243b157f75161ecf7e534fd09475a409deb663fdf4358b1ab738f60173c7cfb37addd24388c831560fe4
• Download URL:
  https://stacks.cdc.gov/view/cdc/215238/cdc_215238_DS1.pdf
• File Type:
  [PDF - 510.50 KB ]