SOME CONSIDERATION OF IN-SITU TESTING ON MECHANICAL PROPERTIES OF ROCK MASS

The first part of this paper compares the different methods of determining the moduli of elasticity and deformation of hard rock. It was found that the plate bearing test has a serious shortcoming. The slit flat jack method seems to be giving more reasonable results; it is recommended as a desirable method for in situ testing. In part 2, a new method of determining the deformation and strength of weak planes in rock masses is recommended. The weak plane charateristics is related to the stress-strain curve, normal stress to the shear displacement curve. The yielding of weak planes is discussed. For the covering abstract of the symposium see TRIS 452576. (TRRL)

• Supplemental Notes:
  • Proceedings of the 23rd Symposium on Rock Mechanics, Issues in Rock Mechanics, University of California, Berkeley, California, August 25-27, 1982.
• Corporate Authors:

  American Institute of Mining, Mettalurgy & Petroleum Engineers

  345 East 47th Street
  New York, NY  United States  10017
• Authors:
  • Weishen, Z
  • Dongjun, X
• Conference:
  • Proceedings of the 23rd Symposium on Rock Mechanics, Issues in Rock Mechanics, University of California, Berkeley, California, August 25-27, 1982.
• Publication Date: 1982

Media Info

• Features: Figures; References;
• Pagination: p. 864-871

Subject/Index Terms

• TRT Terms: Conferences; Deformation; Deformation curve; Dislocation (Geology); Field tests; Jacks (Mechanical equipment); Mass; Mechanical properties; Mechanics; Modulus; Modulus of elasticity; Physical properties; Plastic deformation; Plate bearing test; Properties of materials; Rocks; Shear strength; Strength of materials; Stresses; Test procedures; Testing; Tests
• Uncontrolled Terms: Rock mass
• Old TRIS Terms: Insitu methods; Rock properties
• ITRD Terms: 8525: Conference; 4732: Creep (mater); 5595: Deformation; 6226: In situ; 3831: Jack; 5455: Mechanics; 5919: Modulus of elasticity; 5483: Movement; 6279: Plate bearing test; 5925: Properties; 4154: Rock; 5531: Shear; 5544: Strength (mater); 5575: Stress (in material); 6255: Test; 6288: Test method
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00452607
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Jul 31 1986 12:00AM