Quantification of rock caving within sinkholes by time domain reflectometry ( TDR).

K. O'Connor, Charles Dowding, M. B. Su

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Time Domain Reflectometry (TDR) is an electrical pulse testing technique originally developed to locate breaks in power transmission cables. Recently, this technique has been adapted to monitor caving of rock induced by underground mining. Coaxial cables are grouted into a rock mass which is expected to cave and the progressive rock movement deforms the cable. Consequently, there is a progressive change in cable deformation which produces changes in the TDR pulse reflection signatures, and these changes can be quantitatively related to the location and magnitude of rock mass movements. -Authors

Original languageEnglish (US)
Pages (from-to)157-160
Number of pages4
JournalUnknown Journal
StatePublished - Jan 1 1987

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

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