REMOTE SEISMIC DETECTION BY LASER INTERFEROMETER FOR MINING GEOPHYSICS AND TUNNELING OPERATIONS

A modified laser interferometer system is developed that makes possible the noncontact detection and analysis of dynamic displacement on remote, unprepared rock surfaces. The system is a broadband device and does not suffer from acoustic-impedance-matching problems or frequency-response problems characteristic of conventional contact transducers. The potential applications of such a sysem include hazard detection in mines seeing ahead of a working face in tunneling operations, vibration-mode studies of large structures, and examination of vibrating surfaces in hostile environments.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1976/581/581-002.pdf
• Summary URL:
  • https://scholar.google.com/scholar_lookup?title=REMOTE+SEISMIC+DETECTION+BY+LASER+INTERFEROMETER+FOR+MINING+GEOPHYSICS+AND+TUNNELING+OPERATIONS&author=G.+Fitzpatrick&author=R.+Bruce&publication_year=1976
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309024951
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Exploration and Classification of Earth Materials. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Fitzpatrick, G L
  • Bruce, R A
• Conference:
  • 54th Annual Meeting of the Transportation Research Board
  • Location: Washington District of Columbia
  • Date: 1975-1-13 to 1975-1-17
• Publication Date: 1976

Media Info

• Media Type: Print
• Features: Figures; Photos; References;
• Pagination: pp 11-24
• Monograph Title: Innovations in Subsurface Exploration of Soils
• Serial:
  • Transportation Research Record
  • Issue Number: 581
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Geological events; Geophysics; Hazards; Interferometers; Lasers; Measuring instruments; Mineral dislocations; Mining; Physical properties; Remote sensing; Rocks; Seismicity; Surveys; Tunneling; Vibration
• Uncontrolled Terms: Hazard perception; Seismic investigations
• Old TRIS Terms: Geological conditions; Rock properties
• Subject Areas: Bridges and other structures; Geotechnology; Highways;

Filing Info

• Accession Number: 00141418
• Record Type: Publication
• ISBN: 0309024951
• Report/Paper Numbers: Conf Paper
• Files: TRIS, TRB
• Created Date: Nov 3 1976 12:00AM