3D model evolution of a leak based on GPR image interpretation

Abstract

This paper presents some aspects regarding time propagation of underground water leakage in controlled laboratory conditions using a drilled PVC pipe and interpreting ground penetrating radar (GPR) images. GPR pre-processed images are interpreted for an easy identification and extraction of surfaces and volumes of water leakage. Finally, the temporal evolution of a water leak is shown using 3D models based on interpretation of GPR images. Water volumes obtained using this approach can be easily observed by personnel who lack highly specialized training in the analysis of raw data. The results of this study are promising and can help develop techniques to validate non-destructive models for the identification, distribution, and prediction of water leaks in water supply systems using GPR.

GPR image interpretation advancement for smarter technical management of water leakage in urban water infrastructures

“…In addition, it should be mentioned that the number of traces obtained varies from 214 to 294 samples/image. However, additional criteria to refine the initial classification for the training of the removal process (and eventually for further classification) in order to extract and/or characterise the families of objects could be the uses or contrast images as in Ayala-Cabrera et al [14] or Ocaña-Levario et al [5] or even manual classifications as previously conducted.…”

“…The use of GPR for leak detection is well established in the literature (e.g. De Coster et al [3] ; Amran et al [4] ; Ocaña-Levario et al [5] ; Ayala-Cabrera et al [6] ), and is motivated by its characteristics as a non-destructive geophysical method that allows to evaluate both non-metallic and metallic objects and soil materials. *david.ayala-cabrera@ucd.ie; phone +353 Hyperbolas are the most common shapes obtained in GPR images from subsurface surveying [7] .…”

Enhancement of leak detection in pipelines through time‐domain reflectometry/ground penetrating radar measurements

“…Furthermore, in this paper, the authors also investigate the possibility of implementing an integrated approach that exploits TDR in combination with ground penetrating radar (GPR). The GPR technique has been widely used for leak localisation [8,9], as it is very accurate, reliable, and non-destructive. In this work, the use of GPR is considered as an additional tool that can be used for integrating, when necessary, the information obtained through TDR.…”