Estimation Diameter of Buried Pipe Using Principle of Ground Penetrating Radar and Electromagnetic Locator

• Published in: International Journal of Geoinformatics
• Main Author: Mat Junoh M.S.A.; Sulaiman S.A.H.; Natnan S.R.; Purwanto H.
• Format: Article
• Language: English
• Published: Association for Geoinformation Technology 2022
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85135142491&doi=10.52939%2fijg.v18i4.2261&partnerID=40&md5=1b4e82264e1bab5ac6e1a107743aa7c8

A comprehensive utility map presents a complete information for users to interpret and extract the information. Its importance for underground utility database to support future infrastructure planning. However, there is not all information is available such as material, voltage, colour and diameter of pipe. The surveyor needs to observe the surrounding area of survey such as utility marker and utility box. There are lots of utility marker was missing and damage due to the road maintenance and construction work. Hence, to ensure a complete information could be presented on the map, the surveyor needs to find a method to gather the information. In this study the geophysics method was used to identify the diameter of buried pipe. The integration of geophysics principles is tested between Electromagnetic Locator (EML) and Ground penetrating Radar (GPR). The test was conducted at Jalan B2-B9, Taman Melawati, Kuala Lumpur where five points were marked on the ground as point 1, 2, 3, 4 and 5. The EML with 33kHz & 65kHz frequency have been used to locate the position and depth of buried pipe using Direct Connection technique. The GPR antenna with 700MHz frequency were tested to penetrate the subsurface up to 2.5 meter, respectively. The post processing is carried out to enhance the quality of GPR radargram profile. Thus, the velocity of hyperbola was calibrated trough curve fitting process to get the actual depth of buried pipe. The result of the study shown that the diameter of pipe is 100mm in which corresponded to the information at the pipe marker. EML and GPR is a useful method to detect the diameter of pipe, although it is required field verification and the proper selection of antenna frequency. © Geoinformatics International.