A study of pipes and tunnel by Capacitively Coupled Resistivity System

• Main Authors: Guan-Hua Lee, 李冠樺
• Other Authors: Chien-Chih Chen
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/6s396g

碩士 === 國立中央大學 === 地球物理研究所 === 94 === A study of pipes and tunnel by Capacitively Coupled Resistivity System Guan Hua Lee Geophysical exploration has already been developed for a long time. The traditional instrument has the shortcomings of two items .First, it takes more times and needs more manpower .Second, it will be hardly influenced by the environment. The GeometricTM develops Capacitively Coupled Resistivity System-Ohmmapper in order to improve these two shortcomings. The Ohmmapper system was tested in a variety of environments to evaluate the data stability and repeatability under different survey conditions. Than using the Ohmmapper system investigate pipes and tunnel in three cases. Apparent resistivity Profiles with GPR (Ground Penetrating Radar) profiles and RIP (Restivity Image Profile Method) profiles will be compared by each other in this study.