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| Title: | A new perspective in imaging of coal seams using multi-configuration GPR for environmentally-save excavation purposes |
| Authors: | E., Ibrahim
Robiyanto, H.
W., W. Parnadi
Armando, M. |
| Issue Date: | 2008 |
| Publisher: | Universiti Sains Malaysia |
| Citation: | Proceedings International Conference on Environmental Research and Technology: Penang (Malaysia), 28-30 May 2008, p. 270-273 |
| Abstract: | Many environmental issues are growing rapidly in line with the rapid growth of exploration and exploitation activities to obtain energy resources from the earth. Geophysicists and other geoscientists offered a geosciences approach to solve such problems. The so-called Ground-penetrating radar (GPR) provides a tool for imaging subsurface effectively and efficiently. This paper demonstrates GPR capability to image structural as well as lithological features associated with many environmental problems.
For coal exploitation, determining coal seam total moisture, thickness and fracture planes is also of vital importance. Determining the thickness of shallow coal outcrops is difficult and drill data is often needed to determine lateral coal seam thickness resulting in high exploration costs. Another difficulty is the lack of information about fracture plane orientations which increases the difficulty and cost of digging operations. Ground probing radar (GPR) measurements were carried out on the vertical wall of a coal outcrop to determine the applicability of GPR in mapping the distribution and continuity of lateral coal seam thickness, total moisture variation and fracture planes. By using multi-configuration antennas with three different antenna configurations, reflected waves were recorded giving information to a depth of about 3 m on coal seam thickness, interfaces with interburden layers, total moisture variations and fracture planes in coal seams. By comparing the GPR records with the conditions of the visible vertical coal outcrop it was also confirmed that the electromagnetic waves were mos~ strongly reflected by coal seam interfaces with interburden layers in the form of compact-clays, by total moisture content variations in coal seams and fracture planes containing conductive minerals (i.e. hematite, magnetite, clays and pyrite) and water. |
| License: | http://www.oceandocs.org/license |
| URI: | http://agris.upm.edu.my:8080/dspace/handle/0/8644 |
| ISBN: | 978-983-3986-29-3 |
| Appears in Collections: | Publications
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