Using the point load test to determine the uniaxial compressive strength of coal measure rock

Details

• Personal Author:
  Mark, Christopher ; Rusnak, John A.
• Corporate Authors:
  National Institute for Occupational Safety and Health
• Description:
  "Point load testing is used to determine rock strength indexes in geotechnical practice. The point load test apparatus and procedure enables economical testing of core or lump rock samples in either a field or laboratory setting. In order to estimate uniaxial compressive strength, index-to-strength conversion factors are used. These factors have been proposed by various researchers and are dependent upon rock type. This study involved the extensive load frame and point load testing of coal measure rocks in six states. More than 10,000 individual test results, from 908 distinct rock units, were used in the study. Rock lithologies were classified into general categories and conversion factors were determined for each category. This allows for intact rock strength data to be made available through point load testing for numerical geotechnical analysis and empirical rock mass classification systems such as the Coal Mine Roof Rating (CMRR)." - NIOSHTIC-2
  
  NIOSHTIC no. 20021059
  
  
• Subjects:
  Coal Coal Mining Mining Occupational Health Safety
• Source:
  Proceedings of the 19th International Conference on Ground Control in Mining, August 8-10, 2000, Morgantown, West Virginia. Peng SS, Mark C, eds., Morgantown, WV: West Virginia University, 2000 Aug ; :362-371.
• Series:
  Mining Publications
• Document Type:
  Text
• Genre:
  Conference Publications
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  p. 362-371
• NIOSHTIC Number:
  nn:20021059
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:aa2d8a76f7ea858600d0731852f1fa810008e7c4fad923a7f5af7110f28e5624f38ccb1fa2d718a9f9b810847ef4ba32e604a87447ae85b82aa84e0c1f0e671f
• Download URL:
  https://stacks.cdc.gov/view/cdc/9302/cdc_9302_DS1.pdf
• File Type:
  [PDF - 271.15 KB ]