Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/44090
PIRA download icon_1.1View/Download Full Text
Title: Perturbation mapping of water leak in buried water pipes via laboratory validation experiments with high-frequency ground penetrating radar (GPR)
Authors: Lai, WWL 
Chang, RKW
Sham, JFC
Pang, K
Issue Date: Feb-2016
Source: Tunnelling and underground space technology, Feb. 2016, v. 52, p. 157-167
Abstract: This paper studies the perturbation patterns of GPR images as a tool for water leakage detection in buried water pipes with laboratory experiments. Different perturbations patterns on GPR signals due to a water leak of metallic and PVC pipes buried in a sand box, were mapped and studied with controlled water injection and leak volume, as well as a fixed leak position in the pipes. These perturbation patterns of signal strength include the tale-tell signs of a central leak point and propagation of the radial wetting front vortex centered around the leak point at different injection times. These patterns, compared to the no-leak dry condition, were interpreted with the conventional principles of dielectric contrast and reflection coefficients, and the associated reflection and absorption mechanisms. It is believed that this set of data will serve as an image matching fingerprint to identify and map water leaks in the field.
Keywords: Ground penetrating radar
Water leak
Water perturbation patterns
Publisher: Pergamon Press
Journal: Tunnelling and underground space technology 
ISSN: 0886-7798
DOI: 10.1016/j.tust.2015.10.017
Rights: © 2015 Elsevier Ltd. All rights reserved.
© 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
The following publication Lai, W. W., Chang, R. K., Sham, J. F., & Pang, K. (2016). Perturbation mapping of water leak in buried water pipes via laboratory validation experiments with high-frequency ground penetrating radar (GPR). Tunnelling and Underground Space Technology, 52, 157-167 is available at https://doi.org/10.1016/j.tust.2015.10.017.
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Lai_Perturbation_Mapping_Water.pdfPre-Published version2.89 MBAdobe PDFView/Open
Open Access Information
Status open access
File Version Final Accepted Manuscript
Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page views

109
Last Week
0
Last month
Citations as of Jan 29, 2023

Downloads

20
Citations as of Jan 29, 2023

SCOPUSTM   
Citations

55
Last Week
0
Last month
Citations as of Jan 26, 2023

WEB OF SCIENCETM
Citations

45
Last Week
0
Last month
Citations as of Jan 26, 2023

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.