Use of Ground Penetrating Radar Electromagnetic Wave Method for Detecting the Pipeline Leakage

• Main Authors: Tzu-Yao Lin, 林子堯
• Other Authors: Che-Way Chang
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/71565008498977082214

碩士 === 中華大學 === 土木工程學系碩士班 === 102 === This study uses the 1GHz ground penetrating radar(GPR) to inspect the leakage of the pipeline in sand and mortar with the rebar. The research applies the basic theory of electricmagnetic wave and digital signal acquisition technique to explore the equivalent relative dielectric constant changes of the Ottawa sand and cement mortar containing reinforcement under the situation of pipeline leakages. The experiment analyzes the related leakage signal characteristics and changes according to the electromagnetic wave reflections, time difference and equivalent relative dielectric constant. It then uses the difference of the equivalent relative dielectric constant of GPR in dry Ottawa sand and cement mortar material to determine the range of leakage distribution in the material.