E3S Web Conf.
Volume 133, 2019AG 2019 – 5th International Conference on Applied Geophysics
|Number of page(s)||10|
|Section||Application of Geophysical Methods|
|Published online||25 November 2019|
Application of geophysical methods for the subsurface treatment of the Piekary highway junction in shallow mining terrain
Mineral and Energy Economy Research Institute of the Polish Academy of Sciences, Cracow, Poland
* Corresponding author: email@example.com
The study presents the application of geophysical methods in the subsurface treatment of the A-1 highway in the area of the Piekary junction in the terrain of historic zinc and lead ore mining, in the northern part of the Upper Silesian Coal Basin in Poland (USCB). The study area was under threat of discontinuous deformations, mainly sinkholes. This threat resulted from the shallow exploitation of zinc and lead ores, as well as contemporary exploitation of coal seams at greater depths. An original methodology of subsurface treatment has been developed as an adaptation to the geophysical measurement results. The methodology uses the gravimetric method at the initial and final control stages, as well as the seismic and borehole georadar methods during the detailed evaluation stage. The results of the study allowed different categories of sinkhole hazard to be determined in the area of the Piekary junction. The scope of the liquidation works was selected to match the hazard levels. Blasting of varying intensities and the borehole injection of the filling material were performed. The combination of substrate treatment methodologies and highway construction protection systems have proved to be effective.
Key words: shallow mining / deep mining / discontinuous deformations / subsurface treatment / geophysical methods
© The Authors, published by EDP Sciences, 2019
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