Use of the Schmidt Hammer for Rock and Coal Testing

Details

• Personal Author:
  DeMarco MJ ; Haramy, Khamis Y.
• Description:
  Several authors have reported specific applications of the Schmidt hammer for rock mass characterization, resulting in its acceptance as a convenient tool to index rock quality and to estimate engineering rock properties. The Bureau of Mines advanced the use of this instrument by testing 10 U.S. coals to determine the utility of the Schmidt hammer in designing underground coal mine pillars. Specifically, the tests investigated the correlation of hammer rebound index to uniaxial compressive strength of laboratory-prepared coal samples. Unconfined strength is of particular interest in coal mining since it is used in the majority of published equations on coal pillar design. A description of the Schmidt hammer, a summary of related research performed by several noted investigators, and results of the Bureau's investigation are presented in this paper. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Geology Laboratories Mining Occupational Health Safety
• Keywords:
  Analytical Instruments Coal Mining Compressive Strength Equipment Testing Geologic Characterization Geologic Structures Geotechnical Engineering Laboratory Testing Mining Equipment Mining Industry Pillar Design Pillar Mechanics Rock Mechanics Tools Underground Mining

  More +
• Series:
  Mining Publications
• ISBN:
  9789061916017
• Publisher:
  A. A. Balkema
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  Colorado ; OSHA Region 8 ; South Dakota
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DRC - Denver Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  1
• NIOSHTIC Number:
  nn:20053214
• Citation:
  Research & engineering applications in rock masses: proceedings 26th U.S. Symposium on Rock Mechanics, June 26-28, 1985, Rapid City, South Dakota. Ashworth E, ed. Boston, MA: A. A. Balkema, 1985 Jun; 1:549-555
• Editor(s):
  Ashworth E
• Federal Fiscal Year:
  1985
• Peer Reviewed:
  False
• Source Full Name:
  Research & engineering applications in rock masses: proceedings 26th U.S. Symposium on Rock Mechanics, June 26-28, 1985, Rapid City, South Dakota
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:23f9932600aa170698271f4a7b7d608e36ac2a18c3e2c4947c03d1119b3feb22614370ef3c78cb5ccc5ace0cf3bbc626a4fad8e70076b86bc1b989012140f07c
• Download URL:
  https://stacks.cdc.gov/view/cdc/227751/cdc_227751_DS1.pdf
• File Type:
  [PDF - 335.08 KB ]