Journal Published Online: 30 July 2019
Volume 48, Issue 3

Simulation and Detection Leakage of Underground Water Pipeline by Ground Penetrating Radar

CODEN: JTEVAB

Abstract

In recent years, a series of leakage accidents have been caused by the destruction of water leakage of water supply pipelines in urban areas. In order to determine the leakage characteristics of underground pipelines, GeoStudio was used to simulate the leakage areas in different pipeline diameters. Based on the finite difference method and the Maxwell equation of the electromagnetic wave propagation, signal characteristics of the ground penetrating radar (GPR) wave were analyzed for different ground conditions through forward simulation. Additionally, the properties of the data were analyzed by applying the technology of trace integration and frequency dividing on S-transform to fully determine the location and extent of the leakage. The correctness of the forward simulation results as well as the validity of attribute analysis were verified by field experiments where the different characteristics of morphological and moisture content distribution are proposed in different soils, pipeline diameters, and damage points. The relationship between soil moisture content and dielectric constant showed a three-dimensional function through Topp model, thereby establishing a standard electromagnetic wave reflection of the GPR for pipeline leakage. The trace integration and frequency dividing on S-transformation are used to improve the accuracy of detection. The results would provide a reference for an accurate evaluation of pipeline leakage in the future.

Author Information

Shen, Yupeng
Beijing Engineering and Technology Research Center of Rail Transit Line Safety and Disaster Prevention, Beijing Jiaotong University, Beijing, P.R. China
Lin, Yuanrong
Department of Railway and Highway Engineering, School of Civil Engineering, Beijing Jiaotong University, Beijing, P.R. China
Li, Ping
Department of Railway and Highway Engineering, School of Civil Engineering, Beijing Jiaotong University, Beijing, P.R. China
Fu, Yujie
Department of Railway and Highway Engineering, School of Civil Engineering, Beijing Jiaotong University, Beijing, P.R. China
Wang, Yaqiong
Key Laboratory for Bridge and Tunnel of Shanxi Province, Chang’an University, Xi’an, P.R. China
Pages: 25
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Details
Stock #: JTE20190181
ISSN: 0090-3973
DOI: 10.1520/JTE20190181