Geotechnical sensing by TDR: A slope monitoring system example

Chih-Ping Lin*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Up-hole time domain reflectometry (TDR) devices that interrogate passive mechanical transducers are advantageous for engineering monitoring in situ. This technology is based on transmitting an electromagnetic pulse through a coaxial cable connected to a sensing waveguide and watching for reflections of this transmission due to changes in characteristic impedance along the waveguide. Depending on the design of the waveguide and analysis method, the reflected signal can be used to "sense" various engineering parameters. When embedded in a geotechnical structure, TDR can be seen as a "geonerve" system. New design concepts and data reduction procedures for each type of sensing waveguide are introduced in this article. The versatility and merits of TDR are highlighted by a TDR slope monitoring system example composed of a single TDR device and multiple sensing waveguides.

Original languageEnglish
Title of host publicationThe Proceedings of the 19th (2009) International OFFSHORE AND POLAR ENGINEERING CONFERENCE
Pages242-245
Number of pages4
StatePublished - 1 Dec 2009
Event19th (2009) International OFFSHORE AND POLAR ENGINEERING CONFERENCE - Osaka, Japan
Duration: 21 Jun 200926 Jun 2009

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Conference

Conference19th (2009) International OFFSHORE AND POLAR ENGINEERING CONFERENCE
CountryJapan
CityOsaka
Period21/06/0926/06/09

Keywords

  • Slope monitoring
  • Time Domain Reflectometry (TDR)

Fingerprint Dive into the research topics of 'Geotechnical sensing by TDR: A slope monitoring system example'. Together they form a unique fingerprint.

Cite this