A New High Force and Displacement Shotcrete Test [2015/07]

Details

• Personal Author:
  Clark C ; Johnson J ; Martin L ; Stepan M
• Description:
  Shotcrete and mesh are often installed to control ground deformation, falls and ejection between bolts. The combination of mesh and shotcrete forms a panel or plate that is typically bent by ground extruding between restraining rockbolts. The ground pressure applied (that is, the resistance of these panels to bending) over large ground deformations is important for maintaining ground support safety. This paper describes a new test device that measures this resistance and its evolution over large deformations. Mixes of shotcrete, mesh and other components that can maintain significant support pressure are desired, a characteristic described as the "toughness" of support. Results show toughness depends largely on how shotcrete is integrated with other components. Shotcrete strength is less important. [Description provided by NIOSH]
• Subjects:
  Mining Occupational Health Safety Software
• Keywords:
  Concretes Environmental-control Environmental-technology Force Geophysics Ground-control Ground-stability High-pressure Materials-testing Mining-industry Rock-falls Rock-mechanics Spraying-equipment Sprays Structural-analysis Surface-properties Tensile-strength Testing-equipment Underground-mining

  More +
• Series:
  Mining Publications
• ISBN:
  9781510801240
• Publisher:
  Society for Mining, Metallurgy, and Exploration, Inc.
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  Colorado ; OSHA Region 10 ; OSHA Region 8 ; Washington
• 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:
  434-441
• NIOSHTIC Number:
  nn:20047084
• Citation:
  2015 SME Annual Conference and Expo and CMA 117th National Western Mining Conference - Mining: Navigating the Global Waters, February 15-18, 2015, Denver, Colorado. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2015 Jul; :434-441
• Federal Fiscal Year:
  2015
• NORA Priority Area:
  Mining
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:0b52b538ccec4e5dfe8f047a779b1073b0e7d93f4be7e2182ecc185d898a9abd3576148e86622204f9a4048eb97b01363ce32ffa827341eb5a9cd471b42c9711
• Download URL:
  https://stacks.cdc.gov/view/cdc/228205/cdc_228205_DS1.pdf
• File Type:
  [PDF - 4.65 MB ]