Observations of Rockfall and Earth Slope Movements using Ground-Based Interferometric Radar

Rockfall events and earth slope movements are geotechnical hazards that can have serious economic consequences and impact the safety of the travelling public. There is a need for technologies that can detect hazards at an early stage and accurately monitor on-going movements. Differential radar interferometry is a remote sensing technology that uses phase shifts from pairs of radar scans to detect surface movements. Satellite-based radar interferometry has been successfully used for decades to measure large spatial-scale (km2) ground movements associated with events such as earthquakes and subsidence from oil and water extraction. In recent years, portable ground-based interferometric radar (GBIR) systems have been developed that can be used for monitoring movements of geotechnical features and structures. This technology can rapidly scan massive geotechnical features or landscapes and detect movements at sub-mm resolution. In this paper, results are presented from slope stability applications of GBIR, including: continuous monitoring of active slope movements, periodic monitoring of a potential rockfall site in Glenwood Canyon, Colorado, and a unique controlled study where individual boulders were moved and monitored using GBIR. The results demonstrate the capabilities of GBIR for slope stability applications.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Photos; References;
  • Pagination: pp 285-306
  • Monograph Title: Proceedings of the 67th Highway Geology Symposium (HGS 2016)

Subject/Index Terms

Filing Info

  • Accession Number: 01628005
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 28 2017 9:41PM