Ground penetrating radar imaging of water leaks from buried pipes based on back-projection method

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• 作者：Sevket Demirci^a ; ^{sdemirci@mersin.edu.tr} ; Enes Yigit^b ; ^{enesyigit81@mersin.edu.tr} ; Ismail H. Eskidemir^c ; ^{ieskidemir@mersin.edu.tr} ; Caner Ozdemir^a ; ^d ; ^{cozdemir@mersin.edu.tr}
• 关键词：Ground penetrating radar ; Water leak detection ; Back-projection imaging
• 刊名：NDT and E International
• 出版年：2012
• 期刊代码：38_09638695
• 类别：ph
• 出版时间：April, 2012
• 卷：47
• 期：Complete
• 页码：35-42
• 文件大小：2095 K

摘要

In this paper, the application of ground penetrating radar (GPR) imaging for detecting the water leaks from buried pipes is examined. Experimental water leakage conditions for a shallowly buried plastic pipe are realized within the laboratory sand and outdoor soil mediums. The successive B-scan GPR measurements of the mediums are performed at various time instants while the water is leaking out of the pipe. The corresponding time-series B-scan images are reconstructed using the back-projection algorithm that we have specifically formulated for the subsurface GPR imaging applications. The signatures of the leak regions are then assessed by both direct interpretation of the resultant images and application of change detection procedures. The obtained results demonstrate the capability of GPR for locating the sources of the leaks accurately.