The GPR method applied to the location of pipes used in water supply of the municipal district of Belém-Pará

This work was carried out to evaluate the feasibility of the method GPR (Ground Penetrating Radar) to locate steel, cement-asbestos, PVC and cast iron pipes of several diameters, used by the Companhia de Saneamento do Para (COSANPA) for water supply to the population of the urban area of Belem-Para. To achieve this goal 14 profiles were performed at 6 distinct sites of Belem's urban area, in order to identify 13 targets, using 200 MHz and 400 MHz antennas, commonly used in this type of survey. The radargrams obtained with GPR allowed to identify almost all targets surveyed. Only 3 of the 13 targets were not fully identified, leaving out only the targets of PVC of small gauge (50 mm and 75 mm). After the study, we concluded that the GPR method is very effective in this type of application and its use has great value in the location of the water supply network, what should greatly facilitate the work of expanding the network, as well as its maintenance.