Determination of actual limit angles to the surface and their comparison with the empirical values in the Upper Silesian Basin (Czech Republic)

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Show simple item record Marschalko, Marian Yilmaz, Işık Křístková, Veronika Fuka, Matěj Bednárik, Martin Kubečka, Karel 2012-03-09T12:43:01Z 2012-03-09T12:43:01Z 2012
dc.identifier.citation Engineering geology. 2012, vol. 124, issues 3-4, p. 130-138. cs
dc.identifier.issn 0013-7952
dc.description.abstract This study deals with the determination of the actual limit angles in the long-term formed subsidence basin in the Czech part of the Upper Silesian Basin (the remaining part lays in Poland). Here there was the most extensive underground exploitation of black coal in the north-east of the Czech Republic. A limit angle is absolutely decisive in the determination of deep mining influences in relation to the current and future utilisation of this territory. The two CSM and Paskov mine localities on the edge of the subsidence basin were selected for this study, since they could not have been affected by mining in neighbouring mines. On the grounds of the long-term levelling monitoring of points on the surface which started prior to mining, the horizontal distance between the mined out area and the undisturbed ground surface was identified. The impact of limit angle on the surface was calculated by means of the horizontal distance and the established mining depth. Such identified actual limit angles reached the values of 36° at the CSM Mine and 25° for the Paskov Mine. The calculated values are significantly lower when compared with the currently applied empirical values of 57° for the CSM Mine and 56° for the Paskov Mine. This means that the extent of the undermining effects is unambiguously wider by 611 m at the CSM Mine and by 883 m at the Paskov Mine. This study thus establishes the existence of a significantly vaster area influenced by coal deep mining than previously expected. The identified facts lead to the conclusion that regular revisions and follow-up updates of the empirically determined parameters are recommended. cs
dc.language.iso en cs
dc.publisher Elsevier cs
dc.relation.ispartofseries Engineering geology cs
dc.relation.uri cs
dc.subject limit angle cs
dc.subject undermined territory cs
dc.subject black coal deep mining cs
dc.subject Czech part of the Upper Silesian Basin cs
dc.title Determination of actual limit angles to the surface and their comparison with the empirical values in the Upper Silesian Basin (Czech Republic) cs
dc.type article cs
dc.identifier.location Není ve fondu ÚK cs
dc.identifier.doi 10.1016/j.enggeo.2011.10.010
dc.type.status Peer-reviewed cs
dc.description.source Web of Science cs
dc.description.volume 124 cs
dc.description.issue 3-4 cs
dc.description.lastpage 138 cs
dc.description.firstpage 130 cs
dc.identifier.wos 000299913500013

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