Cemented Rockfill Size Effect Study with Specific Focus on Different Sample Preparation Techniques

Details

• Personal Author:
  Bourgeois J ; Emery T ; Porter, Dale ; Seymour B ; Sweet D
• Description:
  Cemented rockfill (CRF) is being used to backfill primary and secondary stopes at the Eagle Mine, an underground nickel and copper mine operated by Lundin Mining. National Institute for Occupational Safety and Health (NIOSH) researchers from the Spokane Mining Research Division (SMRD) are conducting cooperative research with the mine staff to determine if the size of a CRF sample affects its measured strength properties. Based on previous research by NIOSH, cylindrical samples of CRF ranging in size from six to eighteen inches in diameter were cast at the mine and cured underground. The samples were later transported to the SMRD laboratory and the Michigan Technological University where tests were conducted to determine the strength and elastic properties of the CRF. To further analyze the relationship between backfill density and compressive strength, different ASTM International compaction techniques were used to cast the samples. For comparison, tests were also conducted on in-situ core samples that were drilled from a stope which had been backfilled with the same CRF mix. The data collected from this study not only improves our understanding of CRF in-situ properties but also helps optimize Quality Assurance/Quality Control (QA/QC) methods for backfill preparation and testing. [Description provided by NIOSH]
• Subjects:
  Mining Occupational Health Quality Control Safety
• Keywords:
  Mining Industry Quality Assurance Quality Control Rock Mechanics Sampling Strata Control Underground Mines
• Series:
  Mining Publications
• ISBN:
  9781713872368
• Publisher:
  Society for Mining, Metallurgy & Exploration (SME)
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  Michigan ; OSHA Region 10 ; OSHA Region 5 ; 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:
  1-6
• NIOSHTIC Number:
  nn:20067849
• Citation:
  MineXchange: 2023 SME Annual Conference and Expo, February 26-March 1, 2023, Denver, Colorado, preprint 23-046. Englewood, CO: Society for Mining, Metallurgy & Exploration, 2023 Feb; :1-6
• Federal Fiscal Year:
  2023
• NORA Priority Area:
  Mining
• Peer Reviewed:
  False
• Source Full Name:
  MineXchange: 2023 SME Annual Conference and Expo, February 26-March 1, 2023, Denver, Colorado, preprint 23-046
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:d36f7e6873cc1cf20ab42b7cc6972c2ab92d694d909420db41e2b89852b2991a0aefae8a6c0cbb845736e1a6f590bf0342a0d838f84767f78356f51663202c0b
• Download URL:
  https://stacks.cdc.gov/view/cdc/215597/cdc_215597_DS1.pdf
• File Type:
  [PDF - 366.47 KB ]