MICROSONIC DETECTION OF LANDSLIDES

The microsonic activity (subaudible rock noise) that is recorded in a material can be used to evaluate the stability of slopes in the area. The method can be used in conjunction with other monitoring devices for more thorough monitoring of slope stability. The California Department of Transportation, through a series of research studies, has shown the feasibility of the technique. Currently, the method is used to provide information on activity of landslides, stability of cut slopes, and effectiveness of field corrections for stability problems. Several case histories illustrate uses of microsonic monitoring. The Porto Marina landslide was monitored to minimize the hazard and inconvenience to traffic on Calif-1. Monitoring of the Thornton Bluffs landslide illustrates the relationship of microsonic activity, slope indicators, and nail measurements. Newly constructed cut slopes have been monitored to determine potential for slope failures. Corrective measures for the American Canyon landslide were monitored to evaluate their effectiveness.

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• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Exploration and Classification of Earth Materials.
• Authors:
  • McCauley, Marvin L
• 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;
• Pagination: pp 25-30
• 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: Case studies; Embankments; Indicators (Instruments); Landslides; Monitoring; Noise; Rocks; Slope stability; Slopes
• Old TRIS Terms: Slope indicators; Subaudible rock noise
• Subject Areas: Environment; Geotechnology; Highways;

Filing Info

• Accession Number: 00141419
• Record Type: Publication
• ISBN: 0309024951
• Report/Paper Numbers: Conf Paper
• Files: TRIS, TRB
• Created Date: Nov 3 1977 12:00AM