Modeling of Coal Deposition Using the Resistivity Method with Wenner Configuration in the Bentarsari Basin Area, District of Salem, Brebes Regency, Central Java

Abstract

Research to model coal deposits in the Bentarsari Basin area of Salem District in Brebes Regency has been done using the geoelectric-resistivity method with Wenner configuration. Resistivity data acquisition is carried out on five tracks, with each track has a length of 200 m. The least squares inversion method is applied to obtain a 2D-resistivity section model. Furthermore, the 2D-resistivity section model data for each line is combined into a 3D model to determine the coal deposit model in the area. The results of the interpretation indicate that the subsurface structure of the area consists of clay, sandy clay, coal, and sandstone; where the type of coal is lignite. This coal deposit has resistivity values with interval of 86.1-219.0 Ωm, which is distributed evenly with depth of 0.0-26.5 m, where the southern part of the all track has a higher potential. This research can be followed up with log drill testing to determine the actual subsurface layer, so that it can be utilized as a very economical alternative energy.

Estimation of Geotechnical Parameters for Coal Exploration from Quasi-3D Electrical Resistivity Measurements

“…Previous studies [46][47][48] performed near the present study area employed electrical resistivity imaging methods to define the coal seams and subterranean voids. [49][50][51][52][53] are some of the previous research works that used resistivity methods for coal exploration and coal mine workings.…”

Identifikasi Sebaran Batubara Metode Tahanan Jenis Pada Formasi Muara Enim: Studi Kasus Daerah “X” Provinsi Jambi

“…Batubara mempunyai nilai tahanan jenis yang bervariasi dengan rentang jarak yang cukup besar antara 80-220 Ωm, dan relatif lebih bersifat isolator dibandingkan dengan batuan sedimen lainnya [11]. Namun yang menjadi masalah adalah batubara yang ditemukan pada subcekungan Jambi didominasi oleh lingkungan pengendapan meandering sehingga keberadaan batubara di bawah permukaan cenderung tidak melampar dan bersifat spotting.…”