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    Wyświetlanie 1-3 z 3
    Tytuł:
    Analysis of one-day forecasts of the maximum methane concentration in a tailgate of a longwall ventilated with U system - a case study
    Autorzy:
    Badura, Henryk
    Powiązania:
    https://bibliotekanauki.pl/articles/27324329.pdf
    Data publikacji:
    2022
    Wydawca:
    Instytut Techniki Górniczej KOMAG
    Tematy:
    methane
    maximum methane concentration
    methane concentration forecasts
    methane concentration sensors
    Opis:
    Methane that is released into the mine atmosphere poses a threat to the miners working there. Methane at concentrations of 5-15% by volume in air is an explosive gas. It has caused devastating explosions in mines all over the world. Therefore, in methane mines, concentration of methane in the face and in the entire mine is controlled through welldesigned ventilation system. This system controls concentration of methane in the mine atmosphere and in the rock mass as well as in the mine goafs. The article’s main objective includes a presentation of a forecast for maximal methane concentration in the determined time interval. Sensors were installed in the gate draining the air from longwall: up to 10 m in front of the longwall and at the roadway exit. Both forecasts were made using prognostic equations, using the measurement data in the ventilation roadway of one of the longwalls at the JSW S.A. mine.
    Źródło:
    Mining Machines; 2022, 40, 3; 149--157
    2719-3306
    Pojawia się w:
    Mining Machines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Methane Emissions From Air Shafts of the Jastrzębska Coal Mining Company in 2017-2019
    Autorzy:
    Badura, Henryk
    Łukaszczyk, Zygmunt
    Powiązania:
    https://bibliotekanauki.pl/articles/2064768.pdf
    Data publikacji:
    2020
    Wydawca:
    STE GROUP
    Tematy:
    methane
    demethanation
    removal of methane
    ventilation air methane
    JSW Co. Ltd
    Opis:
    The paper presents formation of the amount of methane released from a coal deposit during coal mining. The total amount of released methane is composed of the amount separated directly into the ventilation air in mines (ventilation methane) and included in the demethanation system, isolated from the ventilation air. Methane from the demethanation system is only partially utilized. The unused part of methane is discharged into the atmosphere. The paper presents how the amount of methane released in individual mines of Jastrzębska Spółka Węglowa S.A. was shaped, with a division into methane released to the ventilation system and included in the demethanation system, taking into account the part used for economic purposes and the part discharged to atmosphere. The research material covers the years 2017-2019.
    Źródło:
    Multidisciplinary Aspects of Production Engineering; 2020, 3, 1; 435--449
    2545-2827
    Pojawia się w:
    Multidisciplinary Aspects of Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of forecasted methane concentration at the top gate of a wall ventilated by means of the “U” system. Case study
    Autorzy:
    Łukaszczyk, Zygmunt
    Badura, Henryk
    Powiązania:
    https://bibliotekanauki.pl/articles/27315553.pdf
    Data publikacji:
    2022
    Wydawca:
    STE GROUP
    Tematy:
    methane
    average concentration of methane
    forecast
    methane concentration sensors
    PROGMET program
    Opis:
    The release of methane into the mine atmosphere poses a threat to the miners. Methane is an explosive gas at concentrations of 5-15% in air by volume and throughout the history of coal mining has been the cause of devastating explosions in mines around the world. For these reasons, in methane coal mines, the concentration of methane emitted from the coal face and the entire mine is controlled by means of a well-designed ventilation system, a system controlling the concentration of methane in the mine atmosphere and a system for methane drainage of the rock mass and goafs. The presented article concerns the forecast of the average concentration of methane on a given day, in the places of sensors located in the longwall roadways of discharge air exhausted from the longwall: up to 10 m in front of the wall and at the outlet of the roadway. Both forecasts were made using the prognostic equations on the basis of measurement data concerning the ventilation roadways of one of the longwalls at JSW SA.
    Źródło:
    Management Systems in Production Engineering; 2022, 4 (30); 342--347
    2299-0461
    Pojawia się w:
    Management Systems in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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