Detection of subsurface utilities using GPR techniques

Sherif Mahmoud*, Mohamed A. Gamal

*Corresponding author for this work

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

Abstract

The nondestructive evaluation of buried utilities is of interest for engineering and environmental applications. The use of Ground Penetrating Radar (GPR) for buried utility detections is one of the most common geophysical techniques due to its capacity for accurate results in either horizontal or vertical directions. Electric cables and metallic pipes are easily recognized on GPR profiles due to their high dielectric values relative to surrounding soils. In this study, 12 different sites are investigated using GPR techniques to detect buried utilities, such as electrical cables, water, and derange pipes located within the first 3 meters of the ground's surface. At each investigation site, two perpendicular GPR profiles, using a 200 MHz antenna, are collected in order to detect any buried utilities. The area under study is excavated after GPR data acquisition for manual verification. It is found that electric cables are easy to recognize on radar profiles by their sharp hyperbola edges and multiples extending to the bottom of the data set. Water pipes have especial characteristics on GPR lines, indicated by a thick, small hyperbola without any multiples. The presence of cement blocks masks any object beneath them, but they are prominent on radar lines as high amplitude reflections.

Original languageEnglish (US)
Title of host publication18th Symposium on the Application of Geophysics to Engineering and Environmental Problems, SAGEEP 2005
Subtitle of host publicationGeophysical Solutions for Today's Challenges
Pages554-559
Number of pages6
StatePublished - Dec 1 2005
Event18th Symposium on the Application of Geophysics to Engineering and Environmental Problems: Geophysical Solutions for Today's Challenges, SAGEEP 2005 - Atlanta, GA, United States
Duration: Apr 3 2005Apr 7 2005

Publication series

NameProceedings of the Symposium on the Application of Geophyics to Engineering and Environmental Problems, SAGEEP
Volume1
ISSN (Print)1554-8015

Other

Other18th Symposium on the Application of Geophysics to Engineering and Environmental Problems: Geophysical Solutions for Today's Challenges, SAGEEP 2005
CountryUnited States
CityAtlanta, GA
Period04/3/0504/7/05

ASJC Scopus subject areas

  • Geophysics
  • Geotechnical Engineering and Engineering Geology
  • Environmental Engineering

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