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 language||English (US)|
|State||Published - Jun 1 2003|
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology