On the quantitative determination of coal seam thickness by means of In-Seam Seismic Surveys

0430259 - ÚGN 2015 RIV CZ eng A - Abstrakt
Schott, W. - Waclawik, Petr
On the quantitative determination of coal seam thickness by means of In-Seam Seismic Surveys.
5th International Colloquium on Geomechanics and Geophysics. GECO 2014. Vol. 5. Ostrava: Ústav geoniky AV ČR, 2014 - (Koníček, P.; Souček, K.; Heroldová, N.). s. 47-48. ISBN 978-80-86407-49-4.
[5th International Colloquium on Geomechanics and Geophysics. 24.06.2014-27.06.2014, Ostravice, Karolínka]
Institucionální podpora: RVO:68145535
Klíčová slova: In-Seam Seismic (ISS) * coal seam thickness * wave guide * dispersion
Kód oboru RIV: DH - Báňský průmysl vč. těžby a zpracování uhlí

The mining at the coal mines of OKD in the Karvina Subbasin is often seriously affected by erosion [1]. As a consequence the thickness of the coal seam can considerably vary in eroded coal seam areas from small amount up to complete erosion. Because of technical and economical reason the knowledge about their location and the remaining coal seam thickness within the erosion areas is required prior to the mining of coal panels or even for its designs. The in-seam seismic (ISS) survey technique [5,6,7] is able to locate such areas as it “looks” parallel to the layering. It uses the ability of coal seams to guide seismic waves. By applying transmission surveys disturbed and undisturbed coal seam areas can be separated and by applying the reflection method the borders of eroded areas can be located in case of almost sudden thickness changes (for instance erosion channels)[8]. In addition by applying ISS-tomography [3] to the transmission data the coal seam structure and the remaining coal seam thickness can be investigated.
Trvalý link: http://hdl.handle.net/11104/0235186