STILLWATER TUNNEL PROJECT

THE BASIC PURPOSE OF THE PROJECT IS THE DEVELOPMENT OF COMPLETE SYSTEMS FOR RAPID TUNNEL CONSTRUCTION. CONTRACTS AND SPECIFICATIONS WILL BE WRITTEN TO ENCOURAGE INNOVATION BY THE BIDDERS. TUNNEL BORING MACHINES WILL BE USED TO EXCAVATE ALL OF THE TUNNEL EXCEPT THE 4500 FT OF QUARTZITIC ROCK AT THE UPSTREAM END WHICH WILL BE EXCAVATED BY DRILL AND BLAST TECHNIQUES. RESEARCH WILL INCLUDE GEOLOGIC, GEOPHYSICAL, ROCK MECHANICS, AND SOIL MECHANICS INVESTIGATIONS AS WELL AS THE RESEARCH AND DEVELOPMENT OF THE EXCAVATION PROCESS, MATERIALS HANDLING, LINING SYSTEMS, AND ENVIRONMENTAL CONTROLS. THE OBJECTIVES SOUGHT IN THE BORING MACHINE DEVELOPMENT AND OPERATION ARE ENUMERATED. TRAIN, SLURRY, PNEUMATIC, CONVEYOR, AND UNITIZED SYSTEMS ARE SOME OF THE MATERIALS HANDLING SYSTEMS CONSIDERED. EVALUATION OF THE SIZING OF SYSTEM COMPONENTS SUCH AS PUMPS AND PIPING WILL ALSO BE DONE. CEMENT AND CHEMICAL GROUTING, THREE TYPES OF PRECAST SEGMENT LINERS SHOTCRETE, CAST-IN- PLACE CONCRETE, EXPANDED METAL SHEETS WITH CONCRETE BACKFILL AND SHOTCRETE FINAL LINING AND OTHER YET UNDEVELOPED SYSTEMS WILL BE EVALUATED. THE PROGRAM INCLUDES DETAILED SURFACE GEOLOGIC MAPPING OF THE TUNNEL ALIGNMENT ON ORTHOPHOTOGRAPHS MODIFICATION AND TRIAL OF SEVERAL SURFACE GEOPHYSICAL TECHNIQUES, AND THE TESTING OF SEVERAL BOREHOLE LOGGING SYSTEMS. LABORATORY AND FIELD TESTING IS DISCUSSED AS ARE ALSO CERTAIN ASPECTS OF OCCUPATIONAL HEALTH AND SAFETY, AND CONSTRUCTION CONTRACT ADMINISTRATION.

Media Info

  • Features: Figures; References;
  • Pagination: p. 965 81
  • Serial:
    • Volume: 2

Subject/Index Terms

Filing Info

  • Accession Number: 00236570
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jan 28 1974 12:00AM