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Observation of phases of subsidence depression creation
Kajzar, Vlastimil
Observation of phases of subsidence depression creation. Due to exploitation of coal and other raw materials of sedimentary type there happen many surface changes connected mostly with subsidence, shifts and deformations of the area of interest. Such processes happen mainly in the overlaying strata of exploited coalface. Size and directions of these movements and deformations depend generally on many factors, primarily on geo-mechanical properties of overlaying strata and general technique of exploitation of the deposit. One of the ways of surface observation of time spatial changes is the usage of modern methods for precise determination of changing position of geo-features. Among these methods we rank GPS surveying. Subsequent processing, analysis and modelling of output data by means of modern software offer an efficient source of information for subsequent work and decisions.
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Srovnání předpokládaných a měřených poklesů v hornické krajině
Doležalová, Hana
There was a repeated GPS surveying done on stabilized points of an observation station that was built in a mining area near Karviná. The GPS surveying was used to document the displays of mine subsidence on the surface above exploited coalfaces. A comparison of the modelled supposed subsidence and the subsidence measured by GPS was done and it has shown on some discrepancies. Presumably the main cause may be seen in the difficult geological and geo-mechanical situation that is not generally included in the modelling of the supposed mine subsidence.
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Observation of phases of surface changes above exploited deposits of sedimentary type
Kajzar, Vlastimil ; Doležalová, Hana ; Staš, Lubomír ; Souček, Kamil ; Šimkovičová, Jarmila
Due to exploitation of coal and other raw materials of sedimentary type there happen many surface changes connected mostly with subsidence, shifts and deformations of the area of interest. Such processes happen mainly in the overlaying strata of exploited coalface. Size and directions of these movements and deformations depend generally on many factors, primarily on geo-mechanical properties of overlaying strata and general technique of exploitation of the deposit. One of the ways of surface observation of time spatial changes is the usage of modern methods for precise determination of changing position of geo-features. Among these methods we rank GPS surveying and usage of methods for gaining data from aerial photogrammetry. Subsequent processing, analysis and modelling of output data by means of modern GIS software offer an efficient source of information for subsequent work and decisions.
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