Full text loading...
-
Utilização De Gpr E Eletrorresistividade Para Mapeamento De Dutos Decorrentes De Piping, Gouveia, Mg
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 7th International Congress of the Brazilian Geophysical Society, Oct 2001, cp-217-00089
Abstract
A piping system was recognized using different<br>geophysical methodologies to access the subsurficial<br>distribution of its channels. The responses of three<br>antennas (100, 200, and 400 MHz) of the groundpenetrating<br>radar (GPR) method were compared, as<br>well as resistivity profiles obtained with different<br>electrode arrays (Cacau, Wenner, and dipole-dipole).<br>The best GPR results were obtained with the 100<br>MHz antennas, which was used to achieve five<br>profiles to demarcate the path of the pipe. The pipe<br>was well identified by using the Cacau (with fixed<br>electrodes with offset of 40 meters) and Wenner<br>arrays, and all the other profiles has indicated a<br>second pipe unrelated to the main pipe.