ROCK BREAKAGE BY HIGH-SPEED IMPACT

RECENT INTEREST IN RAPID EXCAVATION HAS GIVEN NEW IMPETUS TO THE EXAMINATION OF NOVEL ROCK BREAKAGE TECHNIQUES. THIS PAPER REPORTS ON TWO EXPERIMENTAL INVESTIGATIONS IN WHICH ROCK WAS IMPACTED BY (1) SOLID PROJECTILES AT VARIOUS VELOCITIES UP TO 7 KM/SEC (23,000 FPS), AND (2) WATER JETS UP TO 1200 M/SEC (4,000 FPS). THE TEST EQUIPMENT EMPLOYED IN EACH CASE IS DESCRIBED, AND THE RESULTS OBTAINED ARE DISCUSSED BRIEFLY. SIX DIFFERENT ROCK TYPES WERE USED FOR THESE EXPERIMENTS. THE SPECIFIC ENERGY CONSUMPTION WAS COMPARED WITH THAT OBTAINED BY OTHER METHODS. THE FAILURE MECHANISMS FOR BOTH TECHNIQUES WERE EXAMINED. /AUTHOR/

  • Supplemental Notes:
    • Vol 3, No 5-13, PP 93-103, 16 FIG, 2 TAB, 19 REF
  • Corporate Authors:

    International Society for Rock Mechanics

    Laboratorio Nacional de Engenharia Civil, Avenida do Brasil
    Lisbon 5,   Portugal 
  • Authors:
    • Singh, M M
  • Publication Date: 1970-9

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00236124
  • Record Type: Publication
  • Report/Paper Numbers: No. 364
  • Files: TRIS
  • Created Date: May 1 1972 12:00AM