TUNNELING TECHNOLOGY: ITS PAST AND PRESENT

THIS REPORT BRIEFLY DESCRIBES THE PRESENT STATE OF THE ART AND THE TECHNOLOGICAL HIGHLIGHTS OF TUNNELING FROM ITS INCEPTION TO THE PRESENT. THE DISCUSSION IS CONCERNED PRIMARILY WITH TUNNELS DRIVEN THROUGH RELATIVELY COMPETENT ROCK FOR MINE DEVELOPMENT AND VARIOUS CIVIL PURPOSES. IN ADDITION TO PINPOINTING THE MAJOR TECHNOLOGICAL BREAKTHROUGHS IN TUNNELING, THIS REPORT INDICATES THEIR GENERAL EFFECT ON THE SPEED OF TUNNELING. THE TUNNELING SPEEDS ARE BASED UPON DATA FROM APPROXIMATELY 80 TUNNELS LISTED IN THE APPENDIX. THESE DATA INCLUDE LENGTH, CROSS SECTION SHAPE AND DIMENSION, TYPE OF ROCK, TUNNELING METHOD, METHOD OF BREAKING, LOADING, AND TRANSPORTING THE ROCK, AVERAGE LINEAR PROGRESS RATE, AND COST IN VALUES DURING THE PERIOD OF CONSTRUCTION. MOST OF THE TUNNELS DESCRIBED HAVE DIAMETERS OF 15 TO 30 FEET. /AUTHOR/

  • Supplemental Notes:
    • Info CirculAR 8375, 12 PP
  • Corporate Authors:

    Bureau of Mines /US

    ,    

    Government Printing Office

    Superintendent of Documents
    Washington, DC  United States  20402-9325
  • Authors:
    • Nasiatka, T M
  • Publication Date: 1968

Subject/Index Terms

Filing Info

  • Accession Number: 00215139
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 28 1994 12:00AM