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    Wyświetlanie 1-3 z 3
    Tytuł:
    Industrial Noise as a Source of Threat in the Field of Blasting Technology in Coal Mines
    Autorzy:
    Mocek, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/2064361.pdf
    Data publikacji:
    2020
    Wydawca:
    STE GROUP
    Tematy:
    blasting works
    hearing loss
    hearing test
    noise
    miner
    prace strzałowe
    utrata słuchu
    badanie słuchu
    hałas
    górnik
    Opis:
    The publication presents partial results of hearing screening tests conducted in 2019 among employees of 37 hard coal mines located in the Śląskie and Małopolskie voivodships. The tests were carried out in different cities of both voivodships using the Mobile Hearing Diagnosis Center, which parked near the selected mine and specialized hearing diagnostics points of the ACSłuchmed Sp. z o. o. from Lublin. At the diagnostic points, detailed total audiometry tests were conducted on people diagnosed with hearing disorders as part of screening tests. The obtained results allowed to identify branches and workplaces with the highest risk of noise hazard in mines. The presented publication shows the results of noise measurement during blasting works and the results of anonymous surveys conducted among employees of the Department of Blasting Technology of hard coal mines. The survey concerned the subjective feelings of employees regarding noise levels at the workplace and its impact on their well-being and state of health. In the publication summary, the author draws attention to the need to take measures to constantly control the noise level at the workplace and introduce solutions that will enable its reduction and allow for better protection of employees against its damaging consequences.
    Źródło:
    New Trends in Production Engineering; 2020, 3, 1; 83--97
    2545-2843
    Pojawia się w:
    New Trends in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Review of a Modern Technical Solution in Continuous Miner Machine Technology
    Autorzy:
    Mężyk, Arkadiusz
    Pawlak, Mariusz
    Kania, Jan
    Powiązania:
    https://bibliotekanauki.pl/articles/2064276.pdf
    Data publikacji:
    2020
    Wydawca:
    STE GROUP
    Tematy:
    continuous miner
    road header machine
    permanent magnet motor
    silnik z magnesami trwałymi
    maszyna górnicza
    maszyna urabiająca
    Opis:
    In this paper is presented the overview of Continuous Miners available on the market. Numbers describe machines from 1 to 41 and parameters obtained from manufacturers catalogues are presented on diagrams. The statistical analysis of some of parameters are carried out by linear approximation to show factors determining, for example, the total power of installed engines to the power of the cutting head drive, the total power of installed engines to the total mass, cutting height to the cutter diameter and cutting height to the cutting width, etc. Thin layers of coal less than 1.2 m thick and remnants of seams that require work on a system of boards and columns constitute an increasing share of coal deposits. Geometric restrictions, in this case, are closely correlated with the construction form of the machine and they must have high performance with limited geometric dimensions. This type is called “Continuous Miner”, and is closely correlated with those restrictions. The paper reviews the technical solutions used in these machines, which are currently used around the world. Particular attention is paid to the new concept of the cutting drum drive system, in which permanent magnet motors are proposed. Placing them in a cutting drum improves the efficiency of the mining process and the possibility of modular configuration depending on the required working conditions.
    Źródło:
    New Trends in Production Engineering; 2020, 3, 1; 272--282
    2545-2843
    Pojawia się w:
    New Trends in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Performance evaluation of continuous miner based underground mine operation system: An OEE based approach
    Autorzy:
    Banerjee, Sumit
    Powiązania:
    https://bibliotekanauki.pl/articles/2064394.pdf
    Data publikacji:
    2019
    Wydawca:
    STE GROUP
    Tematy:
    Continuous Miner
    Overall Equipment Effectiveness
    availability
    performance
    quality
    reliability
    maszyna górnicza
    OEE
    ogólna efektywność sprzętowa
    dostępność
    wydajność
    jakość
    niezawodność
    Opis:
    CM is a globally renowned machine, designed to work as a mass production technology for underground coal. Different major coal producers across the globe are using this technology for decades to produce underground coal efficiently. India is also one of the major players globally in the arena of coal production and adopted this cutting edge technology since last decade by implementing at. few of the selective underground coal mining projects. Performance of CM technology is influenced by the geo-mining condition, fleets of other ancillary units and reliability of subsystems while implementation of this system depends largely on the extent of reserve. These aspects generate a scope of large scale research and development in this field. Overall Equipment Effectiveness (OEE) is the parameter to benchmark the equipment performance globally. OEE is the product of equipment availability, performance and product quality. This mining machine based paper focuses on the Overall Equipment Effectiveness (OEE) of the complete CM based operation to identify the vulnerable systems, which helps to design proper preventive maintenance programme. The CM based system is divided into few subsystems, such as; electrical, cutter, gathering arrangement, traction, hydraulic, chassis, feeder breaker, shuttle car, CM conveyor and out-bye conveyor. The downtime data used for this analysis is collected from an underground coal mine situated in the central part of India, belongs to one leading coal producing company of the country. From analysis it was found that, electrical systems and conveyors are among most vulnerable systems and deserves more care during maintenance. On the basis of these results recommendations are made to redesign the Preventive Maintenance Programme, in order to avoid the lower availability as well as lower OEE.
    Źródło:
    New Trends in Production Engineering; 2019, 2, 1; 596--603
    2545-2843
    Pojawia się w:
    New Trends in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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