STRENGTH OF ROCK

A NEW METHOD INVOLVING THE USE OF AN ELECTRICAL RESISTANCE STRAIN GAUGE FOR MEASURING ROCK STRESSES IN SITU IS DESCRIBED. THE GAUGE DESCRIBED INCORPORATES A WATER-PROOFED STRAIN CELL, WITH THE USE OF STANDARD DIAMONDCORE DRILLING EQUIPMENT IT ENABLES MEASUREMENTS TO BE MADE MORE THAN 100 FT FROM THE ROCK FACE. PNEUMATIC AND MANUALLY OPERATED TOOLS WERE DEVELOPED FOR INSTALLING THE STRAIN CELLS AT THE END OF THE BORE HOLES. /RRL/

• Supplemental Notes:
  • Vol3, No6, PP1-4, 4FIG, 1REF
• Publication Date: 0

Media Info

• Serial:
  • Csir Tech Info for Industry /S Africa/

Subject/Index Terms

• TRT Terms: Boreholes; Core samples; Drill bits; Drilling; Drilling machines; Field tests; Manual control; Measurement; Pneumatics; Resistance (Electricity); Rocks; Strain (Mechanics); Strain gages; Stresses; Waterproofing materials
• Old TRIS Terms: Cells; Core drilling; Diamond bits; Drilling equipment; Insitu methods; Pneumatic control; Strains
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00228753
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: Aug 15 2004 1:47AM