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Modułowy system wiertniczy VLI serii 1000 – doświadczenia z obsługi w JSW S.A. KWK „Pniówek”

Brudny G., Karkula P., Kuś G.

Bezpieczeństwo Pracy i Ochrona Środowiska w Górnictwie

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2016

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nr 8

10--19

EN

The most popular methane hazard countermeasure used in the underground mines of JSW S.A. is in-process methane extraction the performance of which is simultaneous with the mining of coal beds within the rock formation. The highest efficiency of in-process methane extraction is by removal of the gas via a prallel air heading or an overlying drainage heading. The high efficiency of these countermeasures comes at a great financial cost. Given the positive experiences with alternative countermeasures reported from other countries (Australia, China, and the USA), JSW S.A. has decided to elect a more cost-efficient methane extraction solution: downhole directional drilling. To test it in the operating conditions of Polish mines, an Australian VLI 1000 Series directional drilling rig was purchased, a system designed for directional drilling in underground headings. The modular design of this rig system has been specifically designed to the JSW S.A. requirements; the small footprint of the customised drilling rig facilitates transport in the headings at KWK Pniówek. The rig features downhole motors with a number of drill bits for working the rock formations with the compressive strength Rc values up to 120 MPa. The DDMS (Directional Drilling Management System) of the directional drilling rig enables real-time operating data output for comparative verification of compliance with the borehole design tolerances. The DDMS helps the drilling rig operator control the directional borehole trajectory and correct any deviations on the go. The VLI 1000 Series modular drilling rig can make long directional boreholes which, when combined with branches, create a complex system for geosurveying purposes with pre-process and in-process methane extraction (the latter applies when the mining process disrupts the rock formation balance). During the hands-on training in the drilling rig operation, the KWK Pniówek personnel has fully mastered the long directional drilling, system performance capabilities, borehole design principles, and the DDMS operation. Although the actual performance has fallen short of the scheduled progress in the operation of the directional drilling rig for methane extraction, the experience that will be acquired in time will help develop a methane extraction system with better performance at lower costs.

PL

Artykuł opisuje modułowy system wiertniczy VLI serii 1000 produkcji australijskiej, umożliwiający wykonanie długich otworów kierunkowych, jego budowę i zasadę działania. Opisano system zarządzania wierceniami kierunkowymi DDMS zastosowany w urządzeniu, który – po wprowadzeniu danych – umożliwia wyrysowanie projektowanego otworu, jak i sprawdzenie jego rzeczywistego przebiegu. Na tle tego opisu przedstawiono pierwsze doświadczenia z jego zastosowania w KWK „Pniówek” podczas szkolenia załogi.

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Kogeneracyjne zespoły prądotwórcze z silnikami gazowymi na gaz z odmetanowania - praca generatorów w układach elektroenergetycznych kopalń Jastrzębskiej Spółki Węglowej S.A.

Gatnar K., Kuś G.

Maszyny Elektryczne : zeszyty problemowe

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2010

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Nr 85

141-147

EN

The article presents basic information about Jastrzębska Spółka Węglowa S.A. (Jastrzębie Coal Mine Company) as well as investments connected with building up cogenerative generator sets with gas engines using gas from demethanization of coal mines. The detailed data of generator sets – with special attention to generators – that works in "Borynia", "Budryk", "Krupiński"and "Pniówek" coal mines as well as their location at medium voltage grid of the mines power systems were provided. Cooperation with medium voltage grid (active and passive energy), the amount and way of utilization of the produced electrical energy and the share in satisfying mines demand were discussed. The attempt was made to motive evaluate of generators work in regard of source of satisfying mines power demand, influence of power system on medium voltage grid work, supply station restoration as well as way of power removal from generator sets.

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Modernizacja układów napędowych dmuchaw w kopalnianych stacjach odmetanowania Jastrzębskiej Spółki Węglowej S.A. jako ważny element optymalizacji pracy stacji odmetanowania na przykładzie KWK "Krupiński"

Gatnar K., Kuś G.

Maszyny Elektryczne : zeszyty problemowe

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2008

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Nr 79

35-38

EN

The methane degassing station KWK "Krupiński" was built in the early 80's of the last century. The methane recovery was conducted by means of 6 compressors of produced by the German company Aerzener GMb and driven by Siemens' engines of the 250 kW power without speed control. The adjustment of the degassing parameters was carried out by subsequent incorporating of the compressors and the manual control by sucking, pumping and exhaust valves at the station. That is the reason why the decision of modernization of the station has been made. The crucial point was the replacement of the engines to high-tech, high-effective units with speed control. The task was performed in 2007. In place of the existing compressors 3 blowers equipped with 132 kW drive fitted with the frequency converters. The parameters of the methane degassing process after the modernization (efficiency, maximum underpressure, maximum closed blower pressure) do not differ from the adequate parameters before the modernization. Application of modern drives with smooth rotation regulation allowed to economize the energy used by methane degassing station. The important element was also the improvement of the stability of gas parameters after the station taking into consideration supply of a gas engines of the overall power of 6,9 MWel with this fuel. The idea of the modernization and the results obtained will be presented in the appropriate schemes, diagrams and tables.