The Paskov Mine belongs to the company OKD, a.s. with the production of hard coking coal from 1970. The applied mining method is the slabbing method in controlled caving, excavating the coal pillar by means of coal plough equipment loading mine run on rake conveyers and securing the excavation area with individual hydraulic or mechanical supports. The coal face is planned as one of the coal faces in continuous extraction of the seam by a shearer.Using the shearer at mines in the Paskov Mine is not a novelty. Shearer mining represents some problems. Besides the hazard of methane-air ignition, there is a mixture of coal dust -methane -air, which is more dangerous even in the case of lower concentrations of dust and methane than their individual lower limits of explosiveness. A decision was made then that shearers would gradually be replaced with coal ploughs in all coal faces.The article contains the calculation of the volume of methane emitted as a result of excavation, determining methane concentration during excavation, lowering the hazard of methane layers being formed, and finally evaluating the suitability of the proposed system of the coal face ventilation.Keywords: Concentration, methane, ventilation, coal face, shearer loader, hazard Kopalnia Paskov należy do zakładów OKD, gdzie od lat 70-tych trwa produkcja węgla koksowniczego. Stosowana metoda wydobycia to wybieranie ścianowe grubych pokładów z prowadzeniem stropu na zawał, eksploatacja filarów przy użyciu strugów węglowych z załadunkiem urobku na przenośniki, zabezpieczenie rejonu wydobycia z wykorzystaniem obudowy zmechanizowanej oraz podpór hydraulicznych. Wydobycie w rejonie przodka odbywa się metodą ciągłą, przy użyciu wrębiarek.Wykorzystywanie wrębiarek do wydobycia ścianowego nie jest nowością w kopalni Paskov, jednakże wykorzystywanie ich w kopalniach powoduje pewne problemy. Oprócz zagrożenia zapaleniem mieszanki metanu i powietrza, powstaje również mieszanina pyłu węglowego, metanu i powietrza, która okazuje się bardziej niebezpieczna nawet przy niskich stężeniach metanu i pyłu niż ich obecność w postaci pojedynczych składników w stężeniu odpowiadającym niskiej skłonności do wybuchu. Podjęto więc decyzję o stopniowym zastępowaniu wrębiarek przy eksploatacji przodków strugami węglowymi.

Rehabilitation of post-industrial areas involves many areas. The area after hard coal mines, requires many specific actions and funds in order to eliminate any remnants of the former infrastructure that is located in this area. The area of Upper Silesia, which includes areas on both the Polish and Czech borders, belongs to the area where the process of underground hard coal mining is being extinguished. As a result of the completion of mining works, the mine areas and adjacent sites begin to undergo transformations. Thus, the landscape of this area changes, various types of land, residential buildings and roads are destroyed. The activities related to restoring the utility value to degraded areas should be carried out consistently, primarily from their inhabitants’ perspective. The rehabilitation of post-mining area and its proper management can bring great benefits to the city and its inhabitants in the future. The publication presents a proposal for land development solutions for the former hard coal mine in Bohumin, Vrbice district in the Czech Republic.

VŠB – Technical University of Ostrava, institute of geodesy and mine surveying has been cooperating with Severočeske doly j.s.c. (SD) in important research project since 2007. The main goal is improve control system for opencast mining. Two bucket wheel excavators (K800/103 and KU300/27) were equipped with measurement hardware at the Libouš Lignite Mine (North Bohemia brown coal basin). The position of the bucket wheel centre is computed by means of GNSS data, inclinometer and incremental measurements. Data is transferred to a base. All the values measured are saved in this database. The surface layout of the mine as well as positions of underground geological layers are updated on a regular basis in the digital model of the mine. The main aim of the research is verifying the system in connection to digital model for short time prognosis of qualitative parameters of coal (Ad, Sd, Qr, Wr and MS), continuous automatic computation of mined materials (m3, tons) and continuous checking of creation of the movement surface/plane of the excavator and mining goals. Mine surveyors have a lead role in the working team. The paper describes possibilities of using the GNSS for mine surveying and for production planning.

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(2017). Formation of a complex of management decisions on the reduction of environmental pollution during the development of coal mines. AbstractThe problems of environmental pollution in the conditions of high dust content in the air during the development of coal mines in the territory of the Czech Republic are considered. A mechanism for making managerial decisions was developed using an integrated approach using the new technological process Nástup Tušimice (DNT) aimed at eliminating pollutant emissions and managing workers in dusty conditions in mining operations. The recommendations of active and passive measures aimed at reducing dustiness in the process of coal mining have also been developed.