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Упит dcterms_subject_txt:open-cast coal mine

566 items

  • Obuka za rukovaoce rudarskih mašina - primer uputstva za kreiranje treninga

    Lazar Žujović, Filip Miletić, Marko Lazić, Milan Miljković (2022)
    U ovom radu je predstavljen primer uputstva za kreiranje obuke za pregled rudarskog kamiona. Iako je rudarska industrija zahtevna, kompleksna i delimično opasna, ona je važan segment privrede. Bezbednost i zdravlje na radu i obuka zaposlenih su sastavni deo procesa rada. Zbog toga, obuka zaposlenih je alat koji je suštinski važan za održavanje radnog procesa na odgovarajućem nivou, istovremeno čuvajući bezbednost i zdravlje zaposlenih, imovinu, i životnu sredinu. Postoje različite karakteristike zaposlenih kao i isplativost ulaganja koje takođe treba ...
    obuka zaposlenih, bezbednost i zdravlje na radu u rudarstvu, rudarske mašine

  • Analiza sistema odvodnjavanja površinskog kopa Drmno od podzemnih voda sa severnim savršenim ekranom

    Tomislav Šubaranović, Dušan Polomčić, Vladimir Pavlović (2019)
    Izrada nesavršenog ekrana do drugog sloja uglja na površinskom kopu Drmno, pored zadržavanja postojećih standardnih metoda odvodnjavanja od podzemnih voda linijama bunara, predviđena je poslednje decenije u celokupnoj rudarskoj projektnoj dokumentaciji. Iz objektivnih i subjektivnih razloga njegova realizacija nije ostvarena do danas. U međuvremenu je, uz dodatna geološka istraživanja i promenu dinamike i parametara sistema površinske eksploatacije, došlo do određenih značajnih prostornih promena geoloških i rudarskih uslova u eksploatacionom polju. Ovo je omogućilo preliminarno inoviranje pristupa procesu i konceptu ...
    podzemne vode, odvodnjavanje, bunari, ekran, dinamika, troškovi

  • Development of a petrographic classification system for organic particles affected by self-heating in coal waste. (An ICCP Classification System, Self-heating Working Group – Commission III)

    M. Misz-Kennan, J. Kus, D. Flores, C. Avila, Z. Büçkün, N. Choudhury, K. Christanis, J.P. Joubert, S. Kalaitzidis, A.I. Karayigit, M. Malecha, M. Marques, P. Martizzi, J.M.K. O'Keefe, W. Pickel, G. Predeanu, S. Pusz, J. Ribeiro, S. Rodrigues, A.K. Singh, I. Suárez-Ruiz, I. Sýkorová, N.J. Wagner, D. Životić (2020)
    Self-heating of coal waste is a major problem in the leading coal-producing and consuming countries, independent of the recent or past coal exploitation history. The phenomenon of self-heating is dependent on many factors such as the properties of organic matter (maceral composition and rank), moisture and pyrite content, climate effects, and storage conditions (shape of the dump or compaction of the coal waste). Once deposited, coal waste undergoes oxidation, which can lead to self- heating with the overall temperatures ...
    Stratigraphy,Economic Geology,Geology,Fuel Technology

  • Optimizacija i planiranje površinskih kopova stohastičkim modelima

    Dejan R. Stevanović (2015-05-29)
    Savremeno rudarstvo izloženo je stalnom trendu pogoršanja uslova poslovanja.Mogućnost ostvarenja ekonomskih i drugih ciljeva rudarskog projektakompromitovana je stalnim pogoršanjem kvaliteta ležišta na kojima se vršieksploatacija, kao i značajnoj dozi neizvesnosti povezane sa geološkim,ekonomskim i tehničkim parametrima proizvodnje. U ovako kompleksnimuslovima poslovanja, matematički modeli sposobni da odgovore značajnimizazovima, odnosno ponude optimalna rešenja kojima se garantuje maksimalnoispunjenje projektovanih ciljeva, nameću se kao neophodnost.Trenutni, konvencionalni pristup optimizaciji i planiranju površinskih kopovazasniva se na algoritmima, razvijenim sredinom prošlog veka čije je opšteobeležje deterministički ...
    površinski kop, planiranje, optimizacija, stohastički modeli, kontrola kvaliteta uglja, neizvesnost.
    ... on the lignite open pit. Second model that is being developed is hybrid type. It has stochastic (Monte Carlo method) and deterministic component and treats the problem of optimization of open pit boundaries. Keywords: open pit mine, planning, optimization, stochastic models, coal quality control ...
    ... Knežević, D, Banković, M, 2014, Application of stochastic models for mine planning and coal quality control, Thermal Science, vol. 18, str. 1361-1372 Stevanović D., Banković M., Pešić M.,G, Stanković R., (2014), Aproach to operational mine planning: Case study Tamnava West, Tehnika, ed. Smiljan 243 ...
    ... stohastičkim modelima;Open pit mine optimization and planning with stochastic models Dejan R. Stevanović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Optimizacija i planiranje površinskih kopova stohastičkim modelima;Open pit mine optimization and planning ...

  • Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines

    Ali Nasirinezhad, Dejan Stevanović, Dragan Ignjatović, Petar Marković (2021)
    The conditions under which contemporary surface mining operations is carried out obviously becoming increasingly complex. In such complex conditions, the optimization of haulage systems as the technological phase with the largest share in the total operating costs, is very important from the aspect of achieving profitability of the mining project. In a large number of cases, the application of traditional haulage systems with trucks (as the most dominant type of haulage in open pit mines) does not lead to ...
    In Pit Crushing and Conveying, IPCC, open pit mining, haulage, optimization, costs saving

  • Development of terminological resources for expert knowledge: a case study in mining

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Aleksandar Cvjetić (2015)

  • Optimizacija ugla nagiba generalne kosine unutrašnjeg odlagališta površinskog kopa Tamnava-Zapad

    Natalija Pavlović, Branko Petrović, Tomislav Šubaranović, Ivan Janković (2022)
    Formiranje geomehanički tabilnih unutrašnjih odlagališta otkrivke ima izuzetno značajnu ulogu pri projektovanju i planiranju razvoja površinskih kopova uglja sa aspekta preraspodele masa otkrivke, dinamike eksploatacije, ekoloških zahteva, rudarskih rizika i troškova. Uvećanje zavodnjenosti unutrašnjeg odlagališta otkrivke površinskog kopa Tamnava-Zapadno Polje, kao posledica globalnih klimatskih promena sa pojavom katastrofalnih obimnih padavina i velike poplave, dovelo je i do značajnih ali i trajnih promena geomehaničkih karakteristika materijala, umanjenja stabilnosti generalne kosine unutrašnjeg odlagališta i znatnog povećanja rudarskog rizika. Inovirane varijantne ...

  • Tehno-ekonomska analiza varijanti sistema odvodnjavanja površinskog kopa Drmno od podzemnih voda do kraja eksploatacije

    Tomislav Šubaranović, Dušan Polomčić, Vladimir Pavlović (2018)
    Odvodnjavanje površinskog kopa Drmno od podzemnih voda je jedan od najznačajnijih podsistema u procesu eksploatacije u veoma zavodnjenoj radnoj sredini Kostolačkog basena uglja. Već od 2006. godine, Inovirani dugoročni program razvoja eksploatacije uglja predviđa izradu ekrana, pored zadržavanja postojećih standardnih metoda odvodnjavanja od podzemnih voda linijama bunara. Iako je kasnijim Glavnim rudarskim projektom, takođe, bila predviđena izrada ekrana, njegova realizacija nije započela. Na osnovu realnog sagledavanja postojeće projektne dokumentacije, početak izrade ekrana se predviđa od 2023. godine. ...
    odvodnjavanje, bunari, ekran, dinamika, finansiranje.

  • A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice

    Nikola Lilić, Ivan Obradović, Ranka Stanković (2002)
    Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper, we ...
    ... the overall performance of the mine ventilation system (Figs. 12 and 13). 4. The “Soko” Coal Mine: A Case Study In this paragraph, we will illustrate the use of the INVENTS hybrid system through the analysis and estimation of the ventilation state in the “Soko” coal mine located in the south-east part ...
    ... of Serbia. The linear ventilation scheme of the “Soko” coal mine and the airflow distri- bution in the system are given in Fig. 10. The appropriate canonical scheme is given in Fig. 11. The “Soko” mine is being ventilated by a single main mine fan of the TURMAG Gvhv 15-160 type located on the ventilation ...
    ... B. Denby, Genetic algorithm optimization of large UK coal mine ventilation network, Proc. 8th US Mine Ventilation Symp., 1998, 625-632. 13. Z. Y. Yang, I. S. Lowndes and B. Denby, Application of genetic algorithms to the optimization of large mine ventilation networks, Trans. Instn. Min. Metall., Sect ...

  • A WebGIS Decision Support System for Management of Abandoned Mines

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2016)
    ... Clarke Energy, Abandoned Mine Methane Gas (AMM). Available online: https://www.clarke-energy.com/ coal-gas/abandoned-mine-gas/ (accessed on 11 April 2015). 3. Díez, R.R.; Díaz-Aguado, M.B. Estimating Limits for the Geothermal Energy Potential of Abandoned Underground Coal Mines: A Simple Methodology ...
    ... natural heat contained in the mine water. Geothermal energy systems using heat pumps to extract this heat can be used to offer local employment and energy resilience to the surrounding communities [1]. Abandoned mine methane (AMM) can also be recovered from closed coal mines and used for producing ...
    ... decision-making process in relation to activities related to surface coal mining by improving access to data, timely dissemination of data and understanding of geospatial data on different scales and at different levels [20]. The Abandoned Mine Land Inventory System (e-AMLIS) includes information on abandoned ...

  • Estimating hydraulic parameters for the complex hydrodynamic models

    Dušan Polomčić, Dragoljub Bajić, Jelena Ratković, Bojan Hajdin (2018)
    Hydrodynamic models have usually been calibrated manually, by trial-and-error, with different values of hydraulic parameters and hydraulic characteristics of boundary conditions. This method of calibration and estimation of hydraulic parameters requires an extensive knowledge and experience of experts, but whether the resulting solution includes an optimal set of parameters still remains an open question. An optimization method founded upon the Gauss-Marquardt-Levenberg algorithm, along with PEST software based on that algorithm, introduces automation of model calibration with regularization, which substantially ...
    kalibracija, optimizacija, PEST, koeficijent filtracije

  • Analiza geomehaničke stabilnosti kosina na odlagalištima i površinskom kopu Ćeramide

    Tomislav Šubaranović, Vladimir Čebašek, Bojan Dimitrijević, Veljko Rupar (2022)
    Kako bi se nastavila eksploatacija dacita na površinskom kopu Ćeramide kod Rudnika, potrebno je izraditi novu projektnu dokumentaciju na osnovu novih overenih rezervi. Da bi se eksploatacija jalovine i dacita odvijala sigurno bez klizanja i obrušavanja stenskog materijala, neophodno je izvršiti proveru stabilnosti projektovanih kosina i na odlagalištima i na samom površinskom kopu. U ovom radu je upravo data analiza geomehaničke stabilnosti kosina na odlagalištima i površinskom kopu dacite Ćeramide kod Rudnika.
    površinski kop, Ćeramide, stabilnost kosina, dacit, Rudnik

  • Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine

    Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić (2021)
    The production of lignite in large open-pit mines is mainly performed with continuously operating equipment, where bucket-wheel excavators, bucket-chain excavators, belt conveyors, and spreaders are the basic machines. Smaller machines, usually of discontinuous operating nature, are commonly categorized as auxiliary machines. This paper presents the research related to the analysis of auxiliary machine parameters with the case study for a hydraulic excavator. The purpose of the analysis was to develop a model of rating quality of service of the ...
    Fuzzy theory, hydraulic excavator, selection, quality of service, asset management

  • Managing mining project documentation using human language technology

    Aleksandra Tomašević, Ranka Stanković, Miloš Utvić, Ivan Obradović, Božo Kolonja (2018)
    Purpose: This paper aims to develop a system, which would enable efficient management and exploitation of documentation in electronic form, related to mining projects, with information retrieval and information extraction (IE) features, using various language resources and natural language processing. Design/methodology/approach: The system is designed to integrate textual, lexical, semantic and terminological resources, enabling advanced document search and extraction of information. These resources are integrated with a set of Web services and applications, for different user profiles and use-cases. Findings: The ...
    Digital libraries, Information retrieval, Data mining, Human language technologies, Project documentation

  • Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria

    Vladimir Krivošić, Luka Crnogorac, Rade Tokalić (2024)
    The choice of adequate mining machines is one of the most complex problems in the underground exploitation of mineral raw materials. The weight of such a decision is reflected in the high prices of these machines and the occurrence of even greater costs during their use if their choice was wrongly conceived. There are numerous examples from practice in which such decisions were made solely on the basis of comparing the prices of machines, without considering any of the ...
    utovarno-transportna mehanizacija, izbor, TOPSIS, entropija, standardna devijacija, težina kriterijuma

  • Primena termografije u rudarstvu

    Stevan Đenadić, Vesna Damnjanović, Predrag Jovančić, Dragan Ignjatović, Dragutin Jovković, Filip Miletić (2019)
    Danas, gotovo da nema oblasti u nauci i tehnici u kojoj se Infracrvena termografija ne primenjuje kao metoda za lociranje i praćenje zagrejanih objekata ili tela, beskontaktnu procenu temperature površina, i nedestruktivno ispitivanje materijala. U radu su prikazane mogućnosti i perspektive primene ove metode u oblasti rudarstva.
    infracrvena termografija, rudarstvo, monitoring
    ... Zhai X., Wu S., Wnag K., Drebenstedt C., Zhao J., Environmental influences and extinguish technology of spontaneous combustion of coal gangue heap of Baijigou coal mine in China. 4th International Conference on Energy and Environmental Research, ICEER 2017, Energy Procedia 136, pp 66-72, 2017. ...
    ... tions-by-process.html [14] Australasian Mine Safety Journal: Thermography in Mining URL: https://www.amsj.com.au/thermography-in-mining/ [15] Vale, Thermography from mines to sports. URL: http://www.vale.com/EN/aboutvale/news/Pages/termografia-mina-esportes.aspx [16] Stryjek P, Nikisz T, ...
    ... faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs 57 IX MEĐUNARODNA KONFERENCIJA UGALJ 2019 Zlatibor, 23-26. oktobar 2019. 9th INTERNATIONAL CONFERENCE COAL 2019 Zlatibor, 23-26 October ...

  • Просторни положај лежишта угља Ђурђевик: геофизичко-геолошки модел

    Синиша Арсеновић (2019)
    Лежиште угља Ђурђевик представља источни део Бановићког угљеног басена и припада северној страни босанске офиолитске зоне унутрашњих Динарида у чији састав улазе стене палеозојске, мезозојске и кенозојске старости. Језерска доњомиоценска угљоносна серија изграђена је од лапоровито-глиновитих седимената са једним слојем мрког угља. Дебљина угљеног слоја креће се у интервалу од 5 до 25 m са генералним правцем пружања СЗ - ЈИ и падом према ЈЗ. У зони обухваћеноj геофизичким истраживањима изражена je пострудна тектоника у виду раседа мањег и ...
    рефлективна сеизмика, 3Д геофизичко-геолошки модел, угаљ, синтетички модел, моделирање
    ... , Peng, S., Zou, G., 2015. High resolution processing of 3D seismic data for thin coal seam in Guqiao coal mine. Journal of Applied Geophysics 115, 32-39. Walton, C., Evans, B., Urosevic, M., 2000. Imaging coal seam structure using 3-D seismic methods. Exploration Geophysics 31(3), 509-514. ...
    ... Сарајево: НИШП Ослобођење Сарајево, 58-73 стр. Gochioco, L. M., 1990. Seismic surveys for coal exploration and mine planning. The Leading edge 09, 25-28. Gochioco, L. M., Gochioco, J. R., Ruev, Jr. F., 2012. Coal geophysics expands with growing global demands for safety and productivity. The Leading ...
    ... change coal mining in China. First Break 23, 31-34. Zhaludev, A. V., Ragoza, E., Kosloff, D. D., 2002. Fast Kirchhoff migration in the wavelet domain. Exploration Geophysics 33(1), 23-27. Zhou, B., Hartherly, P., Fallon, G., Sommer, D., 2013. Coal seismic depth conversion for mine data i ...

  • Компарација метода XRF i ICP-MS на узорцима угља и продуктима сагоревања

    Бранко Костић, Ксенија Ераковић, Дејан Прелевић, Сабина Ковач, Драгана Животић (2023)
    геохемија, угаљ, продукти сагоревања, XRF, ICP-MS

  • Composition of organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in East Herzegovina (External Dinarides, Bosnia and Herzegovina)

    Nikoleta Aleksić, Aleksandar Kostić, Miloš Radonjić (2021)
    This paper presents the first data on the organic matter and thermal maturity of Mesozoic and Cenozoic sedimentary rocks in the East Herzegovina region of the External Dinarides. Representative, organic-rich samples from outcropping sedimentary rocks of different ages in the area (Triassic to Neogene) were selected and analysed. The organic matter was studied by Rock-Eval pyrolysis and under the microscope in reflected non-polarized light and incident blue light. The results obtained show the presence of different types of organic ...
    nafta i gas, Rock-Eval, refleksija vitrinita, maceral, termička zrelost
    ... carbonaceous marl. �e youngest sediments (Middle Miocene) were sampled near the Gacko coal mine. A piece of clean coal was tak- en from the main coal seam, formed on top of light grey marl. �e Gacko main coal seam has a thickness of 9 to 24 m (Mirković et al., 1974) and it was deposited during the ...
    ... carbonaceous marl. The youngest sediments (Middle Miocene) were sampled near the Gacko coal mine. A piece of clean coal was tak- en from the main coal seam, formed on top of light grey marl. The Gacko main coal seam has a thickness of 9 to 24 m (Mirkovic¢ et al., 1974) and it was deposited during the ...
    ... stage of thermal maturity. �e Miocene coal sample analysed (Fig. 7) from the Gacko coal mine, with huminite as the major maceral group, pro- vided the most reliable data. More than 450 measurements were made, and the mean re�ectance was 0.34% Rr (lignite coal rank). �ese are also the �rst results ...

  • Distribution of major and trace elements in the Kovin lignite (Serbia)

    Dragana Životić, Olga Cvetković, Predrag Vulić, Ivan Gržetić, Vladimir Simić, Konstantin Ilijević, Biljana Dojčinović, Suzana Erić, Bogdan Radić, Sanja Stojadinović, Snežana Trifunović (2019)
    geochemical and mineralogical study was performed on lignite samples from the Upper Miocene Kovin deposit, hosting three coal seams. The Kovin lignite is characterized by high moisture content, medium to high ash yield, medium to high sulphur content and a relatively low gross and net calorific value. The mineralogical composition, and major and trace element contents were determined by X-ray diffraction, scanning electron microscopy with energy dispersive Xray spectroscopy (SEM-EDS) analyses, and inductively coupled plasma optical emission spectrometry (ICP-OES). ...
    General Earth and Planetary Sciences, General Environmental Science
    ... trg 12–16, 11000 Belgrade, Serbia 4 Kovin coal mine, Cara Lazara 85, 26220 Kovin, Serbia doi: 10.4154/gc.2019.06 Abstract A geochemical and mineralogical study was performed on lignite samples from the Upper Mio- cene Kovin deposit, hosting three coal seams. The Kovin lignite is characterized by ...
    ... (EEF) began in 1991, and is still active. Since 1991, the Kovin mine has produced about 5 Mt of lignite, with an annual produc­ tion of ~ 300,000 t. Geological exploration of the wider area of the Kovin de­ posit, including the Kostolac coal basin, began in the late 19th century. The Upper Miocene (Pontian) ...
    ... and deposi­ tional environment of the Kipra lignite seam, Maritza­West basin, Bulgaria.– In­ ternational Journal of Coal Geology, 71, 527–541. doi: 10.1016/j.coal.2006.06.006 KOVIN MINE – OFFICIAL WEB SITE: http://www.rudnikkovin.rs/wp (last accessed June 4, 2018). KOUKOUZAS, N., WARD, C. & LI, Z. ...