LASER FINDS APPLICATION ON TUNNEL JOB

A BEAM OF LIGHT IS GUIDING A 280-TON CONTINUOUS HARD ROCK BORING MACHINE ALONG ITS COURSE WITH COMPUTER-LIKE ACCURACY. THE TUNNEL IS BEING BORED AS PART OF AN IRRIGATION PROJECT IN THE SAN JUAN RIVER BASIN IN NORTHERN NEW MEXICO. THE LIGHT IS PROVIDED BY A GAS LASER. THE BEAM FALLS ON PHOTOCELL TRAGETS WHICH CAUSES CORRESPONDING LIGHTS ON THE DISPLAY PANEL NEAR THE OPERATOR OF THE BORER. ANY DEVIATION SHOWS IMMEDIATELY ON THE PANEL AND NECESSARY CORRECTIONS CAN BE MADE. A SURVEYOR CAN BACK SIGHT ON A TARGET, CHANGE THE COURSE, OR CONTINUE THE COURSE FROM A NEW STATION POINT. ALIGNMENT OF TRANSIT ALIGNS THE LASER. OTHER APPLICATIONS OF LASER USES ARE IN THE LAYOUTS OF PIPE LINES OR HIGHWAYS. THE BEAM PROVIDES A CONTINUOUS VISIBLE LINE WHICH CAN NOT BE KNOCKED DOWN BY MACHINERY OR DESTROYED BY VANDALS. /AUTHOR/

  • Supplemental Notes:
    • Vol 19, No 6, PP 29-30
  • Publication Date: 1966-6

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  • Accession Number: 00214698
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 19 1994 12:00AM