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2D electrical resistivity tomography (ERT) methodto delineate coal seams: Case studies on lignite and anthracite |
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| รหัสดีโอไอ | |
| Creator | 1. Khamvanh Phengnaone 2. Rungroj Arjwech 3. Mark Everett |
| Title | 2D electrical resistivity tomography (ERT) methodto delineate coal seams: Case studies on lignite and anthracite |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2020 |
| Journal Title | Songklanakarin Journal of Science and Technology |
| Journal Vol. | 42 |
| Journal No. | 4 |
| Page no. | 844-849 |
| Keyword | electrical resistivity tomography (ERT), lignite, anthracite |
| URL Website | https://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | The 2D electrical resistivity tomography method was used to study the geometry of coal seams at two sites that differin the local geological setting and type of coal. One site contains a lignite seam whereas the other contains an anthracite seam.The coal seam resistivity signatures were determined and the results were compared between the two study sites. The interpreted2D resistivity tomograms showed that the lignite seam cannot be distinguished from the surrounding host rocks but the anthraciteseam is clearly associated with high resistivity values up to 100 ?m with respect to the low-resistivity background of shale. Thetype and age of coal affects the porosity and water saturation. Increases in these two parameters reduce the bulk resistivity of theformation. Type, age, and fluid content are important factors that determine the resistivity contrast of a coal seam with thesurrounding rocks. |
