Monitoring deformation in rock and soil with TDR sensor cables: Part 1. Concept and case history

Charles Dowding*, Matthieu L. Dussud, William F. Kane, Kevin M. O'Connor

*Corresponding author for this work

Research output: Contribution to journalReview article

13 Scopus citations

Abstract

Deformation in rock and soil was monitored with time domain reflectometry (TDR) sensor cables. The distance to the deformation was calculated by knowing the propagation velocity of the signal in the cable, and the time of travel of the voltage pulse from the disruption to the cable tester. Deformation occurring along a shear band in soil was transferred to the cable through the grout. It was found that for TDR to be effective in soil, a shear band must occur to produce the localized strain necessary to locally deform the cable.

Original languageEnglish (US)
Pages (from-to)51-54+59
JournalGeotechnical News
Volume21
Issue number2
StatePublished - Jun 1 2003

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

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