RESEARCH AND DEVELOPMENT - KEY TO ADVANCES FOR RAPID EXCAVATION IN HARD ROCK

THIS PAPER SHOWS THE POTENTIAL ABILITY OF TECHNOLOGIC FORECASTING TO MEET FUTURE DEMANDS IN RAPID EXCAVATION THROUGH THE ACCELERATION OF EXCAVATION RATES BY RESEARCH AND DEVELOPMENT IN RELATED TECHNOLOGIC FIELDS. IT ALSO BRIEFLY REVIEWS THE INITIAL DEVELOPMENT OF THE ARPA (ADVANCED RESEARCH PROJECTS AGENCY) ROCK MECHANICS AND RAPID EXCAVATION PROGRAM. ATTENTION IS DRAWN TO RESEARCH PROJECTS EITHER COMPLETED OR UNDERWAY. THE PROGRESS OF THE APPLIED RESEARCH CONTRACTS IN THE ROCK DISINTEGRATION ELEMENT OF THE PROGRAM IS SUMMARIZED AND THE DIRECTIONS OF FUTURE RESEARCH ARE DISCUSSED. PROGRAM DEVELOPMENT AND MANAGEMENT IS REVIEWED. MAJOR EMPHASIS OF THE PROGRAM IS DIRECTED TOWARD THE ROCKS WHICH ARE TOO HARD OR ABRASIVE FOR EXCAVATION WITH AVAILABLE BORING MACHINES. DETAILS ARE GIVEN OF THE PROGRAM FRAMEWORK AND MANAGEMENT. IN ADDITION TO THE LABORATORY AND FIELD PHASES OF TESTING THE FEASIBILITY OF THREE CATEGORIES OF NOVEL CONCEPTS (THERMAL ENERGY PROCESSES; HYDRAULIC IMPACT; AND COMBINATION ENERGY PROCESSES), SEVERAL CONTRACTS INCLUDED THEORETICAL STUDIES OF THE MECHANISMS OF BREAKAGE. THESE EXPLOSIVE DISTINTEGRATION PROJECTS ARE OUTLINED AND INNOVATIONS IN MECHANICAL FRAGMENTATION ARE DESCRIBED. TABULATIONS OF SPECIFIC ENERGY VALUES ARE PRESENTED.

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 1393-44
  • Serial:
    • Volume: 2

Subject/Index Terms

Filing Info

  • Accession Number: 00236595
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 27 1974 12:00AM