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    Tytuł:
    Availability Study of a Longwall Shearer Including Phases of its Operation
    Autorzy:
    Brodny, Jarosław
    Brzana, Estera
    Powiązania:
    https://bibliotekanauki.pl/articles/2064591.pdf
    Data publikacji:
    2021
    Wydawca:
    STE GROUP
    Tematy:
    mining machines
    efficiency
    machine availability
    OEE
    industrial automation
    Opis:
    The mining production process includes a number of sub-processes, the most important of which is mining the rock mass. In this process, increasingly modern mining machines are being used to replace human labor and to achieve high productivity. Full utilization of the potential of these machines is of great importance for the efficiency of individual stages and the whole process of mining production. In the process of mining the rock mass, the use of machinery of a mechanized longwall system is of fundamental significance. Their availability, efficiency and reliability significantly affect the efficiency of the whole mining production process. The paper refers to the availability of a longwall shearer as the basic machine of a mechanized mining system. Based on the analysis of diagnostic signals, recorded by the industrial automation system, the availability of the longwall shearer was determined for 10 selected cycles of its operation. The analysis also included the phases of these cycles, treated as separate periods of the shearer’s work. This division is a consequence of a great difference in the character of the shearer’s work in particular phases of the operating cycle. The analysis covered the phases of cutting, mining and shunting. The determined temporal waveforms and the shearer’s availability in these phases show their great diversity. Therefore, the results indicated the necessity to analyze the operation of mining machines in their characteristic periods, which can be the basis for minimizing unplanned interruptions in their operation and improving the efficiency of their use.
    Źródło:
    Multidisciplinary Aspects of Production Engineering; 2021, 4, 1; 200--211
    2545-2827
    Pojawia się w:
    Multidisciplinary Aspects of Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of dustiness state in a driven underground dog heading ventilating by auxiliary air-duct
    Autorzy:
    Brodny, Jarosław
    Tutak, Magdalena
    Powiązania:
    https://bibliotekanauki.pl/articles/410090.pdf
    Data publikacji:
    2020
    Wydawca:
    STE GROUP
    Tematy:
    dust
    CFD modeling
    dog heading
    mining exploitation
    Opis:
    Dustiness of the mine atmosphere during carrying out exploitation is one of the most hazardous factors threaten to health and life of employees. Also it is large hazard for all type of mechanical and electrical devices operating in mining headings. Coal dust is also very dangerous due to its possibility of explosion. Currently applied technologies of rock mass mining process, entire transport process of output and applied ventilation system cause that rock and coal dust is presented practically in each of the mining heading. Practically, is impossible to eliminate dust from mining headings. However, one can determine its parameters and potential ways its displacement. In the paper there is presented modeling research methodology of dustiness state in a driven dog heading. Developed model is the basis for this methodology, including the diphase flow of mixture of air and dust in the mining heading. Analysis was performed for real driven dog heading. Based on performed analyses, distributions of particular fraction and movement trajectories of selected dust grains were determined. Developed methodology gives a lot of opportunities for analysis of dustiness state in mining headings and in other compartments. It enables to determine parameters of particular grains and their impact on ventilation parameters of the air stream in the tested headings. Obtained results can also be used to reduce dust hazard.
    Źródło:
    Management Systems in Production Engineering; 2020, 2 (28); 73-77
    2299-0461
    Pojawia się w:
    Management Systems in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Forecasting the distribution of methane concentration levels in mine headings by means of model-based tests and in-situ measurements
    Autorzy:
    Brodny, Jarosław
    Tutak, Magdalena
    Powiązania:
    https://bibliotekanauki.pl/articles/229542.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    CFD
    forecasting the distribution of methane
    mining heading
    in-situ measurements
    model tests
    Opis:
    The methane hazard is one of the most dangerous phenomena in hard coal mining. In a certain range of concentrations, methane is flammable and explosive. Therefore, in order to maintain the continuity of the production process and the safety of work for the crew, various measures are taken to prevent these concentration levels from being exceeded. A significant role in this process is played by the forecasting of methane concentrations in mine headings. This very problem has been the focus of the present article. Based on discrete measurements of methane concentration in mine headings and ventilation parameters, the distribution of methane concentration levels in these headings was forecasted. This process was performed on the basis of model-based tests using the Computational Fluid Dynamics (CFD). The methodology adopted was used to develop a structural model of the region under analysis, for which boundary conditions were adopted on the basis of the measurements results in real-world conditions. The analyses conducted helped to specify the distributions of methane concentrations in the region at hand and determine the anticipated future values of these concentrations. The results obtained from model-based tests were compared with the results of the measurements in real-world conditions. The methodology using the CFD and the results of the tests offer extensive possibilities of their application for effective diagnosis and forecasting of the methane hazard in mine headings.
    Źródło:
    Archives of Control Sciences; 2019, 29, 1; 25-39
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The level of implementing sustainable development goal "Industry, innovation and infrastructure" of Agenda 2030 in the European Union countries: Application of MCDM methods
    Autorzy:
    Brodny, Jarosław
    Tutak, Magdalena
    Powiązania:
    https://bibliotekanauki.pl/articles/19322700.pdf
    Data publikacji:
    2023
    Wydawca:
    Instytut Badań Gospodarczych
    Tematy:
    sustainable development
    innovativeness
    EU-27
    MCDM methods
    Opis:
    Research background: Sustainable development of the modern world represents an opportunity to preserve economic growth and technological progress, as well as social development, without limiting the possibilities of this development for past generations. The directions of this development are included in the 17 goals and 169 tasks of the 2030 Agenda for Sustainable Development. The achievement of these goals and the implementation of the adopted tasks is a huge challenge for individual countries and regions. This also applies to the European Union (EU), where economic development is closely linked to environmental protection and social inclusion. Of key importance in this context is Objective 9 of Agenda 2030, and thus its level of implementation in the EU-27 countries is the aim of the research presented in this paper. Purpose of the article: The research involved assessing the level of EU countries in terms of building stable infrastructure, promoting sustainable industrialization and fostering innovation, i.e., the main areas of Goal 9 of Agenda 2030. Methods: The assessment was based on the EU-27 countries' sustainable development index (SDG9) determined with the use of 14 indicators characterizing these areas between 2015-2020. The basis of the developed methodology was a multi criteria decision making approach (MCDM methods). TOPSIS, WASPAS and EDAS methods were used to determine the sustainability index, and the Entropy, CRITIC and standard deviation (SD) methods were used to determine weights for the adopted indicators. In addition, the use of the Spearman's and Kendall's Tau non-parametric tests enabled the analysis of the relationship between the SDG9 index and the basic economic, environmental and energy parameters, as well as the digitalization of the countries under study. Findings & value added: The results show that the EU-27 countries vary widely in terms of implementing Sustainable Development Goal 9 of Agenda 2030 over the analyzed period. Now, the most advanced in this respect are Denmark, Germany, Luxembourg, the Netherlands, Finland, and Sweden. By contrast, substantial problems are found in Bulgaria, Greece, Portugal, and Lithuania. The results also provide an opportunity to trace changes in the value of the designated index in individual countries, and in groups of countries of the "old" and "new" EU. These results significantly enrich the knowledge of the effectiveness of implementing Goal 9 of Agenda 2030 in the EU-27 countries and the relationship between the development of individual countries and sustainable development economy. These findings can also be used to create new EU-27 strategies for sustainable and solidarity-based development of the whole EU. In addition, the results can be helpful to decision-makers as they highlight important indicators related to innovation, industrialization and infrastructure that should be considered when formulating a country's sustainable development strategy. The added value of the study is the research procedure presented, which can be used in analyses on the study of various issues related to sustainable development for other groups of regions.
    Źródło:
    Oeconomia Copernicana; 2023, 14, 1; 47-102
    2083-1277
    Pojawia się w:
    Oeconomia Copernicana
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Inter gases as one of the ways to reduce the risk of endogenous fires in hard coal mines
    Autorzy:
    Szurgacz, Dawid
    Sobik, Leszek
    Brodny, Jarosław
    Powiązania:
    https://bibliotekanauki.pl/articles/2064924.pdf
    Data publikacji:
    2019
    Wydawca:
    STE GROUP
    Tematy:
    air flow
    longwall complex
    inert gases
    Opis:
    Endogenous fires are currently one of the most common threats in hard coal mines. They are very dangerous for the staff and can cause very large economical loses. Therefore, the scope of activities aimed at limiting the possibility of these fires and reduction of their consequences constantly broadens. The paper presents the results of research aimed at determining the efficiency of the ventilation system applied to reduce the risk of endogenous fires in the areas where inert gases are used. The calculations included carbon dioxide and nitrogen. Inertisation is one of the ways of combating endogenous fires. This method is included in the developed comprehensive method to reduce the possibility of these fires. The results obtained and the method developed and later applied, should have a significant impact on improving the safety of operations in the scope of occurrence and consequences of endogenous fires.
    Źródło:
    Multidisciplinary Aspects of Production Engineering; 2019, 2, 1; 183--190
    2545-2827
    Pojawia się w:
    Multidisciplinary Aspects of Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of Stoppages in the Process of Roadway Drivage Caused by Exceeding the Maximum Allowable Level of Methane Concentration
    Autorzy:
    Brodny, Jarosław
    Tutak, Magdalena
    Felka, Dariusz
    Dorota, Palka
    Powiązania:
    https://bibliotekanauki.pl/articles/2064253.pdf
    Data publikacji:
    2020
    Wydawca:
    STE GROUP
    Tematy:
    methane hazard
    dog headings
    mining operations
    methaneometry
    process efficiency
    metaneometria
    wydajność procesu
    zagrożenie metanowe
    pomiar metanu
    Opis:
    Methane is one of the most dangerous gases occurring in mining production. Being inseparably connected with the rock mass, it presents a serious risk to occupational safety and reduces the effectiveness of mining production. A particularly high methane hazard occurs directly during exploitation in longwall headings and the drivage of roadways. Exceeding the maximum allowable level of its concentration in these headings makes it necessary to disconnect all machines until this concentration level is reduced. This leads to unscheduled downtimes of such machines, thus increasing the costs of their operation and decreasing their effectiveness. The paper demonstrates the results from the analysis of machine downtimes in the drivage of roadways, caused by excessive methane concentration levels. The analyses were based on the indications from the system for automatic monitoring of the ventilation parameters in this heading. The results obtained clearly demonstrated that exceeded values of methane concentration caused a series of unexpected downtimes in the drivage process. As a result, the process was disturbed and its effectiveness reduced. The presented analyses are one of the first to address the issue of how methane emissions affect machine downtimes. However, this phenomenon represents a major problem that needs to be addressed comprehensively in order to minimise the losses arising out of the necessary disruptions to the exploitation process.
    Źródło:
    New Trends in Production Engineering; 2020, 3, 1; 197--210
    2545-2843
    Pojawia się w:
    New Trends in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The role, importance and impact of the methane hazard on the safety and efficiency of mining production
    Autorzy:
    Palka, Dorota
    Brodny, Jarosław
    Tutak, Magdalena
    Nitoi, Dan
    Powiązania:
    https://bibliotekanauki.pl/articles/26073333.pdf
    Data publikacji:
    2022
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    górniczy proces produkcyjny
    wydajność procesu
    górnictwo węgla kamiennego
    zagrożenie metanowe
    modelowanie i symulacja numeryczna
    mining production process
    process efficiency
    hard coal mining
    methane hazard
    numerical modeling and simulations
    Opis:
    Underground mining production is an extremely important process for the economy and carried out in very difficult and complex environmental conditions. The disturbance of the balance of this environment makes it also a very dangerous process. Due to the importance of coal, mainly as an energy raw material, the process of its exploitation is carried out all over the world. The specificity of its production is mainly determined by mining and geological conditions, which determine the method of operation and the selection of machines and devices for this process. One of the most dangerous natural hazards associated with this process are ventilation hazards, including methane hazard. The reason for this threat is methane, an odorless and colorless gas, which becomes a flammable and explosive gas under certain criteria. These features make this gas a huge threat to mining operations. Its huge amounts, contained in coal seams, are released into the mine atmosphere during the exploitation process, causing a very high threat to work safety. Events related to the occurrence of methane are most often the cause of mining disasters, in which people die and the technical and mining infrastructure is destroyed. The reason for the growing methane hazard is the increasingly difficult mining conditions, and mainly the increasing depth of mining, and thus also the increase in methane-bearing capacity of the seams. Taking into account the huge impact of methane hazard on the mining process, the article discusses its impact on the safety and efficiency of this process. The results of the literature review with regard to this risk are presented and the accident statistics are presented. On the basis of actual data, an analysis of interruptions in the exploitation process related to exceeding the permissible me-thane concentrations was carried out in one of the mines. The problem of limiting the production process due to these exceedances is an important factor reducing the efficiency of this process. The obtained results clearly indicate that the losses resulting from these breaks deteriorate the profitability of the entire process and affect the economic efficiency of the industry. In order to effectively counteract the dangerous phenomena related to the methane hazard and to improve the efficiency of the mining production process, solutions were proposed to improve this state and the directions for further research were proposed.
    Źródło:
    Production Engineering Archives; 2022, 28, 4; 390--397
    2353-5156
    2353-7779
    Pojawia się w:
    Production Engineering Archives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Economic aspects relating to machine operations on a mine main drainage system
    Autorzy:
    Korbiel, Tomasz
    Czerwińska-Lubszczyk, Agnieszka
    Brodny, Jarosław
    Czerwiński, Stefan
    Powiązania:
    https://bibliotekanauki.pl/articles/24202574.pdf
    Data publikacji:
    2022
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    coal mine dewatering
    optimization of pumps operation
    machine safety and reliability
    maintenance of water pumps
    economy of an underground coal mine
    device diagnostics
    Opis:
    This article presents an economic analysis of the exploitation of the main mine drainage according to the condition of machines. The study is based on actual operating data obtained during the operation of an underground hard coal mine. Through the selection of state estimators, appropriate sensory systems, as well as a long-term economic approach, operating procedures were developed that allowed for the introduction of significant financial savings. Operating costs are reduced by lowering energy consumption and reducing the costs of current repairs and spare parts. In addition to the classic approach to monitoring the state of a machine, based on the observation of residual processes, a global coefficient, referred to as unit energy consumption, has been proposed. Thanks to this, the operation of the machine occurs not only on the basis of its current dynamic state, but also due to the control processes of the machine’s operation. Moreover, the article refers to the area related to water safety and the reliability of the pumping station.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2022, 72 (144); 122--130
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Migration Factor of Stimuling the Development of the Production Industry in Ukraine and Poland
    Autorzy:
    Mosora, Larysa
    Tolubyak, Vitalii
    Brodny, Jarosław
    Romanyshyn, Liubomyr
    Mosora, Yurii
    Powiązania:
    https://bibliotekanauki.pl/articles/2064817.pdf
    Data publikacji:
    2020
    Wydawca:
    STE GROUP
    Tematy:
    migration process
    educational migration
    consequences of migration
    donor country
    recipient country
    migrants
    cooperation
    Opis:
    The article examines the influence of migration processes on the formation and development of production capacities of countries. It is emphasized that population migration significantly affects the social and economic indicators of the country; under such influence, they can have both positive and negative trends. The article presents the main positive and negative consequences of population migration for donor countries, recipient countries, and for migrants themselves. It is proved that one of the most popular and promising is educational migration, which, under certain favorable circumstances, makes it possible to form highly qualified personnel, deepen international cooperation between higher education institutions of different countries, and strengthen the joint use of educational and scientific potential. The attention is focused on the fact that Ukraine today acts as a donor country and a leader in the number of young people who travel to study in Poland. It is indicated that in order to effectively regulate migration processes by the state, it is appropriate to ensure interaction between higher education institutions of different countries, namely, in the sphere of: a double-degree program, foreign internships, and holding joint international conferences. Using the example of Ivano-Frankivsk National Technical University of Oil and Gas and Ternopil National Economic University, it is shown how such interaction is implemented in practice and its consequences. The conclusions are based on the fact that educational migration is one of the most favorable types of migration. With its proper control by the state, it is possible to stimulate the development of the production industry in countries and improve social and economic indicators.
    Źródło:
    Multidisciplinary Aspects of Production Engineering; 2020, 3, 1; 732--744
    2545-2827
    Pojawia się w:
    Multidisciplinary Aspects of Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Programming of Production and Manipulation Technology
    Autorzy:
    KRÁLIK, Marian
    PROSTAŃSKI, Dariusz
    MICHALIK, Peter
    BIAŁY, Witold
    BOŽEK, Pavol
    BRODNY, Jarosław
    Powiązania:
    https://bibliotekanauki.pl/books/25119529.pdf
    Data publikacji:
    2024
    Wydawca:
    Instytut Techniki Górniczej KOMAG
    Opis:
    This study material is an introduction to CNC Machining and Programming is intended to support the essentially practical activity of preparing and proving computer numerical control (CNC) part programs for turning, milling, and drilling. It will be of value to students in a wide range of courses dealing with CNC programming and calculations of all forms, tooling for CNC, and fixturing for CNC whether in a major or related course in a college, university, or industrial organization. Students undertaking a course of study devoted to part programming will therefore find it necessary to attend training center. The student must also have a good understanding of basic machining techniques, and should ideally have previous experience in turning, milling, and drilling operations. In preparing this text, these fundamental requirements have been borne in mind. CNC part programming is an absorbing and time-consuming activity it is one of the few areas of study where students complain that time has passed too quickly! Thus, a primary objective of this book is to ensure that limited course time can be used to the best advantage by providing the opportunity to devote as much time as possible to preparing programs and using the associated equipment. Accordingly, an attempt has been made to include sufficient information to provide the student with much of the theoretical knowledge needed to support the more practical elements of study, thereby reducing the time spent on formal lectures and unnecessary note taking. The text also provides the student with the opportunity to study specific aspects of interest or needs. This text is essentially practical in nature and is intended to provide adequate material for course work. It contains a series of assignments that provide the student with a practical understanding of CNC tooling, processing, and programming by various means. The second part of this study material is a welcome addition to the increasing volume of literature on robotics too. Although the subject is still in its relative infancy, there has been an almost explosive growth in the application of robots in recent years ranging from relatively simple pick-and-place devices to complex multi-degree-of- freedom machines with computer assisted programming of their functions. Thus, this book is being published at a particularly opportune time, and it is likely to become a standard reference book for programmer of CNC machine machines and robots.
    Dostawca treści:
    Biblioteka Nauki
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