Issue |
E3S Web Conf.
Volume 66, 2018
AG 2018 - 4th International Conference on Applied Geophysics
|
|
---|---|---|
Article Number | 01006 | |
Number of page(s) | 9 | |
Section | Geophysics in Geoengineering | |
DOI | https://doi.org/10.1051/e3sconf/20186601006 | |
Published online | 26 November 2018 |
Linear discontinuous deformations in the light of investigations performed with ERT method
Silesian University of Technology, Faculty of Mining and Geology, Gliwice, Poland
* Corresponding author: katarzyna.szafulera@polsl.pl
The article presents an example of using the electrical resistivity tomography method to assess the condition of shallow rock mass layers in the area of linear discontinuous deformations created in the past due to underground mining activity. The research concerned the mining area of one of the Upper Silesian Coal Basin mines, where intensive mining operations have been conducted for several decades. In the considered area, linear discontinuous deformations were created in the form of ground steps. Their location is related to characteristic layout of deposit accessing roadways and extraction fronts in several coal seams. The article analyzes the geological structure of the deposit and the state of deformation of the rock mass caused by mining operations. In order to evaluate the hitherto impacts, appropriate calculations of the extraction influence were performed, assuming different views on the summation of horizontal strain in long time intervals. The calculations were carried out using the theory of W.Budryk - S. Knothe. Theoretical considerations were supplemented with geophysical surveys performed with using electrical resistivity tomography. Obtained results of the near-surface layers ERT imaging in the form of resistivity profiles confirm the existence of rock loosening zones in the areas of discontinuous deformations occurrence.
Key words: Post-mining discontinuous deformations / Linear deformations / ERT method
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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