Integration of Ground Penetrating Radar (GPR) and Well Logging Data for Mapping Coal Seams in Pit "NS", South Palembang Sub-Basin
DOI:
https://doi.org/10.70561/geocelebes.v10i2.50664Keywords:
Coal, Drilling Data, Ground Penetrating Radar (GPR), OutcropAbstract
Coal seam continuity is an important aspect in coal exploration and mine planning, particularly in the Muara Enim Formation, South Sumatra Basin, which is one of Indonesia’s major coal-bearing formations. This study aims to identify and evaluate the lateral and vertical continuity of coal seams in Pit “NS”, South Palembang Sub-Basin, by integrating Ground-Penetrating Radar (GPR), drill, and outcrop data. GPR data were acquired along four survey lines with lengths of 418 m, 611 m, 158 m, and 517 m using a 25 MHz antenna. The data were processed through static correction, dewow filtering, gain application, bandpass filtering, background removal, running-average filtering, and depth conversion using an electromagnetic-wave velocity of 0.14 m/ns. The processed radargrams show strong, continuous, high-amplitude reflectors interpreted as coal seams, supported by drill and outcrop observations. The interpreted coal seams occur at depths of approximately 5–42 m, with thicknesses ranging from 8 to 12 m, varying across the survey lines. The integration of GPR with geological control data improves the reliability of coal seam interpretation and demonstrates that GPR is effective for evaluating shallow coal seam continuity in the study area.
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