HARD ROCK TUNNELING MACHINE CHARACTERISTICS

THE PAPER REVIEWS THE SPECIFICATIONS AND PERFORMANCE OF HARD ROCK TUNNELING MACHINES OBTAINED FROM MANUFACTURERS CATALOGS, PUBLISHED LITERATURE, AND TALKS AND VISITS WITH MANUFACTURERS IN THE UNITED STATES AND EUROPE. GRAPHICAL FIGURES ILLUSTRATE DATA ON MAXIMUM AXIAL THRUST, RATED BORING HEAD POWER AND RATED BORING HEAD TORQUE, AS FUNCTIONS OF FACE DIAMETER FOR ABOUT 75 HARD ROCK TUNNELING MACHINE INSTALLATIONS. DETAILS ARE GIVEN OF AXIAL THRUST, CUTTER HEAD POWER, ROTARY SPEED AND TORQUE. AN IMPORTANT FACTOR FOR ASSESSMENT OF BORING MACHINES IS THE SPECIFIC ENERGY CONSUMPTION, I.E., THE ENERGY CONSUMED IN EXCAVATING UNIT VOLUME OF ROCK. VALUES ARE OBTAINED BY DIVIDING THE POWER UTILIZED AT THE VOLUMETRIC EXCAVATION RATE. GRAPHS ARE PRESENTED OF THE POWER CONSUMPTION VERSUS CUTTING RATE FOR HARD ROCK TUNNELING MACHINES, SPECIFIC ENERGY VERSUS COMPRESSIVE STRENGTH, HEAD POWER VERSUS MACHINE THRUST AND THE SPECIFIC ENERGIES ACHIEVED IN ROCK CUTTING TESTS.

Media Info

  • Features: Figures; References;
  • Pagination: p. 1149-58
  • Serial:
    • Volume: 2

Subject/Index Terms

Filing Info

  • Accession Number: 00236583
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 27 1974 12:00AM