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  • Author or Editor: S. Tomecka-Suchoń x
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Using a RAMAC-GPR with a 200 MHz antenna, we obtained radargrams in an old coal-mining district of Upper Silesia (Poland), where exploitation holes represent a danger of collapse for existing structures. Despite some drawbacks, GPR methods seem to be the best technique for mapping and monitoring these holes, which may reach the surface after some time. In the first part of this paper, we show actual field measurements for a typical case, and in the second part we present preliminary theoretical investigations. We construct 2D synthetic radargrams based on the information we obtained from available geological data and the interpretation of the real radargrams. Thus, we formulate suggestions on how to optimize the methodology of locating sinkholes by the GPR technique, and give some clues concerning the theoretical interpretation of GPR data in this particular case.

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