Vybrané problémy uhelných zásob české části hornoslezské pánve

Abstract

The doctoral dissertation deals with the issue of coal reserves of unmined deposits in the Czech part of the Upper Silesian basin, which were considered as a reserve for further mining development. In the past, these deposits were the subject of variously intensive exploration of the borehole from the surface, which was concluded and evaluated by the calculation of reserves according to the conditions of the availability of reserves valid at the given time. However, the criteria for these conditions were different for different deposits. Under these conditions, mutual comparison of deposits is problematic. However, it is even more problematic to use these reserves for evaluating the prospects of individual unmined deposits at the present time, because most unmined deposits were evaluated according to the criteria of the availability of reserves valid in the conditions of a centrally controlled economy, when prices did not correspond to real market conditions, black coal mining was the object of a subsidy policy and planning was governed by the State Planning Commission. The target of the work was to find out how much are the reserves of these unmined deposits usable for the preparation of investment plans in the present, because geological survey and reserve calculations of these deposits were carried out in the period of the centrally controlled economy. Based on the analysis, two unmined deposits were selected: Dětmarovice deposit and Příbor – Východ deposit. At the Dětmarovice deposit there are reserves of coal seams of the Karvina Formation, at the Příbor - East Deposit there are reserves of coal seams of the Ostrava Formation. At the same time, working conditions for the utilization of reserves were prepared, which corresponded to the current mining-technical-economic conditions of coal mining in the Czech part of the Upper Silesian Basin. The reserves of both deposits were recalculated according to these working conditions. New reserves were compared with reserves based on older calculations. On the basis of the analyses, it was found that without recalculations according to the updated conditions of usability, the original reserves of unmined deposits cannot be used for current investment analyses.