Effects of Corrosion on Ground Support and Corrosion Monitoring Methods

Details

• Personal Author:
  Benton DJ ; Chambers AJ ; Finley SA ; Orr DT ; Stepan MA
• Description:
  Corrosion of ground support can lead to falls of ground that pose a significant risk to miner safety. To address this problem, the National Institute for Occupational Safety and Health (NIOSH) is investigating corrosion at the Hecla Mining Company's Greens Creek Mine, located near Juneau, Alaska, USA. Field studies have used photogrammetry surveys to document welded-wire mesh corrosion, and laboratory studies at NIOSH's Spokane Mining Research Division (SMRD) have investigated the effects of corrosion on ground support integrity. Findings show that (1) corrosion monitoring through photogrammetric methods may be effective for qualitative measurements of welded-wire mesh corrosion, and (2) there is a relationship between loss of load-bearing capacity and the diameter loss due to corrosion in welded-wire mesh. Photogrammetry results thus far have measured an apparent bulking of the corroded welded-wire mesh, and preliminary laboratory tests have investigated the relationship between the larger bulked and effective wire diameter. If this relationship is verified, these results may indicate that photogrammetry, when combined with the models produced in laboratory tests, could offer a means of monitoring corrosion levels, as well as rock rib deformation. [Description provided by NIOSH]
• Subjects:
  Environmental Monitoring Laboratories Mining Occupational Health Safety
• Keywords:
  Analytical Instruments Analytical Models Coatings Corrosive Materials Environmental Control Environmental Monitoring Environmental Technology Ground Control Ground Falls Ground Monitoring Ground Stability Laboratory Testing Load Monitoring Materials Testing Measurement Equipment Mining-industry Monitoring Systems Photographic Equipment Photometry Qualitative Methods

  More +
• Series:
  Mining Publications
• Publisher:
  Society for Mining, Metallurgy, and Exploration, Inc.
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  Alaska ; Colorado ; OSHA Region 10 ; OSHA Region 8 ; Washington
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  SMRD - Spokane Mining Research Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-8
• NIOSHTIC Number:
  nn:20049551
• Citation:
  2017 SME Annual Meeting, February 19-22, 2017, Denver, Colorado, preprint 17-050. Englewood, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2017 Feb; :1-8
• Contact Point Address:
  Amy J. Chambers, National Institute for Occupational Safety and Health, Spokane Mining Research Division, Spokane, WA
• Email:
  achambers@cdc.gov
• Federal Fiscal Year:
  2017
• NORA Priority Area:
  Mining
• Peer Reviewed:
  False
• Source Full Name:
  2017 SME Annual Meeting, February 19-22, 2017, Denver, Colorado, preprint 17-050
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:478f2cb3dd90bddd16c0317bbc454c6afdf37bd95dcb0fbcf6782c0d3e51b32a48331e15a97ce471ac8eeec24732b4cfe136ea59f20c05f9a8091c5e84eb49a9
• Download URL:
  https://stacks.cdc.gov/view/cdc/228387/cdc_228387_DS1.pdf
• File Type:
  [PDF - 1.02 MB ]