RQD MODELS AND FRACTURE SPACING

Various statistical models are proposed for estimating the quality of rock masses. These models are then employed to relate Rock Quality Designation (RQD) with the average number of discontinuity or average intact lengths. It is observed that the standard deviation of the intact lengths plays an additional important role in the rock quality classification. Increase in the standard deviation improves the rock quality. The proposed models are verified with the limited amount of data that are available in the rock mechanics literature. The models as a whole cover almost all of the feasible region in the RQD versus average number of discontinuity domain.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339410
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • SEN, Z
• Publication Date: 1984-2

Media Info

• Features: References;
• Pagination: p. 203-216
• Serial:
  • Journal of Geotechnical Engineering
  • Volume: 110
  • Issue Number: 2
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9410

Subject/Index Terms

• TRT Terms: Fracture mechanics; Mathematical models; Rock mechanics; Rocks; Spacing; Standard deviation; Statistical analysis
• Uncontrolled Terms: Fracture; Rock masses
• Subject Areas: Data and Information Technology; Geotechnology; Highways; I43: Rock Mechanics;

Filing Info

• Accession Number: 00387009
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Aug 30 1984 12:00AM