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Optymalizacja systemu eksploatacji grubego pokładu węgla w aspekcie występujących zagrożeń skojarzonych wraz z rekonsolidacją stropu na przykładzie ściany 24 pokł. 510/1łg, 510/1 i 510/1-2 partia W2 w KWK „Borynia-Zofiówka-Jastrzębie” Ruch „Jastrzębie”

Zimoń P., Dźwigoł R., Mazur P.

Systemy Wspomagania w Inżynierii Produkcji

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2018

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Vol. 7, iss. 1

102--119

PL

Referat zawiera skrótowe omówienie warunków górniczo- geologicznych rejonu ściany 24 pokł. 510/1łg, 510/1 i 510/1-2 w partii W2 w JSW S.A. KWK „Borynia-Zofiówka-Jastrzębie” Ruch „Jastrzębie” wraz z krótkim rysem historycznym powstania koncepcji rozcięcia pokładu oraz doboru systemu eksploatacji w aspekcie istniejących zagrożeń skojarzonych. Przedstawiono kształtowanie się zagrożenia pożarowego i metanowego (zagrożeń dominujących) w okresie eksploatacji ściany oraz dobór profilaktyki w zakresie ich zwalczania w aspekcie poprawności przyjętych założeń projektowych

EN

Lecture contains review of mining-geological conditions of longwall 24 coal bed 510/łg, 510/1 and 510/1-2 in part W2 at JSW S.A. KWK “Borynia-Zofiówka-Jastrzębie” Ruch “Jastrzębie” together with brief historical view of developing concept of coal bed cut and exploitation system selection in terms of existing combined hazard. Formation of fire and methane hazard (dominant hazard) during the exploitation period and selection of prophylaxis in terms of coping with them in aspect of accepted design assumptions.

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Eksploatacja pokładu 510 w polu S KWK „Murcki-Staszic” w warunkach występowania zagrożenia metanowego, pożarowego i tąpaniami

Kurs R., Albrecht J.

Bezpieczeństwo Pracy i Ochrona Środowiska w Górnictwie

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2018

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nr 9

21--26

PL

PGG S.A. Oddział KWK „Murcki-Staszic” w Katowicach prowadzi eksploatację pokładu 510 w polu S na poziomie 900 m w warunkach współwystępowania zagrożeń naturalnych. W artykule zaprezentowano ewolucję sposobów eksploatacji pokładu kolejnymi ścianami w miarę postępu robót eksploatacyjnych i kształtowania się stanu zagrożeń naturalnych oraz doświadczeń wynikających z dokonanej eksploatacji. Ponadto przedstawiono niebezpieczne zdarzenia zaistniałe podczas prowadzonych robót eksploatacyjnych w polu S.

EN

Since 2008, the “Murcki-Staszic” mine in Katowice has been exploring the sub-ceiling bed 510 in field S on cave-in faces at the height of up to 3.0 m. Face 9b-S situated in the northern part of the field was launched first. Since an endogenous fire broke out in the mined deposits in liquidation, the face deposits and a part of the pits used for the next face were embanked, and the field was reassigned to two other fields: 8b-S and 10b-S. Based on the experiences gathered for face 9b-S, a series of additional solutions was designed for face 8b-S of approx. 160 m in total length. Their goal was to limit any imminent natural threats, with primary focus on fire threat. However, since the beginning of its mining, it was methane threat that has proven dominant for face 8b-S. For this reason, all mining operations on the wall needed to be stopped and additional preventive measures were applied. These consisted in restricting access to the face, increasing methane exhaust capacities, introducing auxiliary ventilation devices in the vicinity of its intersection with the ventilation drift, and intensifying the sludging of mining batches with an ash and water mix. These measures have limited the prevalent methane threat. The next face (2b-S) of approximately 240 m in total length was aired using the “U” method in the initial course. Based on earlier experiences, additional drift pits were created in its course. After about 280 m, this enabled the face to be mined and aired using the “Y” method. In consequence, the methods of mining the 3rd layer in deposit 510 in field S was changed in that the lengths of successive faces were reduced (the number of faces was increased for the field from the planned 9 to 13) and the overlaying pits were demethanized (inclined demethanization drifts) in deposit 501. Thanks to the application of this demethanization method, the methane threat was significantly reduced on the next face: 12b-S, thus contributing to its safer and more effective mining. At the turn of 2016 and 2017, mining was commenced for deposit 510 on face 3b-S in the southern part of field S. However, this operation was grossly affected by the imminent rick burst threat. Despite the preventive measures applied (restricted daily progress, shock and loosening bursts in the deposits, torpedo bursts targeted at the ceiling), high-energy rock mass vibrations impacted the near-face pit, rapidly increasing the carbon oxide contents in the vicinity of the face after one of the shocks, forcing the construction insulation of the face area in the form of anti-explosive plugs.

3

Study of influence of tremors on combined hazards. Longwall mining operations in co-occurrence of natural hazards. A case study

Trenczek S.

Journal of Sustainable Mining

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2016

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Vol. 15, iss. 1

36--47

EN

Combined hazards occurring in areas of hard coal mines were characterised. A possible course of processes leading to a mining catastrophe, associated with occurrence of combined hazards, was discussed. An example of a cause and effect chain is presented, where rockburst hazard initiates – with co-occurring climatic hazard – an increase in the level of spontaneous fire hazard, methane explosion hazard and coal dust explosion hazard. Possibility of improving detection of spontaneous fire hazard in presence of co-occurring combined hazards was analysed.