A Study of Applying Ground Penetration Radar Detect Underground Pipelines

• Main Authors: Wei-Hua Huang, 黃韋華
• Other Authors: 陳水龍
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/k78epd

碩士 === 國立臺北科技大學 === 土木與防災研究所 === 93 === In geotechnical engineering, it is often necessary to carry out inspection work prior to the acceptance of pipelines or pavement thickness. Traditionally, digging or drilling is used for this purpose. However, this is not only costly and time consuming, but also destroyed the pavement structures and caused disturbances to nearby residents. A simpler and more effective method in solving this kind of problem is necessary. The topic here is a non-destructive investigation method, which is calledthe Ground Penetrating Radar (GPR) that employs the radar wave reflection principle. By analyzing the round-trip reflected wave, waveform, the amplitude and frequency of vibration, and other characteristics we can derive the location and size of an object below ground. This study use a sand box to simulate typical hole pipe test. Vary different material pipeline and geometry arrange the way and carry on the test in the sand box, then analyse the picture characteristic of the underground pipeline of the different material with the actual project case of different situations, and strengthened the signal of pipeline by use filter and gain, analyse the distribution situation of the pipeline under road , and compare with the result of the simulated test of the sand box observing the characteristic of radar wave. And use 3–D image deal with software easy 3–D and Gradix image analysis of making data, improve the shortcoming of 2–D，and comparative advantage and disadvantage and difference, examine its suitability , survey the preliminary achievement in the pipeline, can differentiate the picture characteristic that PE and PVC pipeline cause because of the material difference,verify this way prospecting suitable effect to the real underground pipeline position ,verify GPR has potentiality to demand urgently to be popularized.