Assessing the Mechanical Behavior of Large-Scale Shotcrete Panels

Details

• Personal Author:
  Benton D ; Johnson J ; Martin L ; Raffaldi M ; Stepan M
• Description:
  The Office of Mine Safety and Health Research (OMSHR), Spokane Mining Research Division (SMRD), is continuing its High-Energy High-Displacement (HEHD) testing of field-scale shotcrete panels. A test program was developed to determine the relationship between applied force, displacement, and energy for both unreinforced and reinforced shotcrete panels. Reinforcement options consisted of synthetic macro-fibers, sprayed polyurea liners, chain-link fence, welded-wire mesh, and combinations of these products. During testing, photogrammetry was used to measure the geometric changes of the panels, including volume changes and panel cracking. These measurements were correlated with the toad and displacement data, allowing visual observation to be related to the applied force and displacement. The test results provide a comparison of the mechanical performance of the various panel types and can be used by the practicing engineer to evaluate installed support based on visual observation of cracking and deformation. Visual assessment of the loading cycle and strength capacity of shotcrete in underground excavations will improve mine safety by providing a means to quantify the stability of installed shotcrete support. [Description provided by NIOSH]
• Subjects:
  Accidental Falls Accidents Mining Occupational Health Safety
• Keywords:
  Coal Mining Excavations Force Load Monitoring Mechanical Properties Mining-industry Safety Measures Safety Monitoring Testing Equipment Underground Mining
• Series:
  Mining Publications
• Publisher:
  Society for Mining, Metallurgy, and Exploration, Inc.
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  Arizona ; OSHA Region 10 ; OSHA Region 9 ; 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:
  1-10
• NIOSHTIC Number:
  nn:20049264
• Citation:
  2016 SME Annual Meeting, February 21-24, 2016, Phoenix, Arizona, preprint 16-036. Englewood, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2016 Feb; :1-10
• Federal Fiscal Year:
  2016
• NORA Priority Area:
  Mining
• Peer Reviewed:
  False
• Source Full Name:
  2016 SME Annual Meeting, February 21-24, 2016, Phoenix, Arizona, preprint 16-036
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:0ec9e76af40e741770740677552fee40c7f52057a43043f0cf55c4ea0b5b28b1a7f9c17d2d35fa39fa34ed1e93b7a7a10989b7c5a55add666e436502f0411b5a
• Download URL:
  https://stacks.cdc.gov/view/cdc/228356/cdc_228356_DS1.pdf
• File Type:
  [PDF - 1.65 MB ]