Претрага
271 items
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The application of mathematical transformation on aeromagnetic data in order to detect magnetic anomaly sources
Ignjatović Snežana, Ivanović Nadežda, Vasiljević Ivana, Vasiljević Ilija, Kričak Lazar. "The application of mathematical transformation on aeromagnetic data in order to detect magnetic anomaly sources" in 45th International October Conference on Mining and Metallurgy, Bor:University of Belgrade-Technical Faculty in Bor (2013): 256-260
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Relationship between the reliability and the lenght of conveyor rubber belt
Tanasijević Miloš, Bugarić Uglješa, Jovančić Predrag, Ignjatović Dragan, Polovina Dragan. "Relationship between the reliability and the lenght of conveyor rubber belt" in 29th Danubia-Adria Symposium on Advances in Experimental Mechanics 1, Beograd :Mašinski fakultet (2012): 274-277
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Metode ocene preostalih mogućnosti rotornog bagera
Polovina Dragan, Ivković Slobodan, Ignjatović Dragan, Tanasijević Miloš, Ivezić Dejan. "Metode ocene preostalih mogućnosti rotornog bagera" in VIII Međunarodni simpozijum Mehanizacija i automatizacija u rudarstvu i enregetika - MAREN 1, Lazarevac:Univerzitet u Beogradu - Rudarsko-geološki fakultet (2010): 413-425
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The application of Euler deconvolution for defining the position and depth of magnetic anomaly sources
Ignjatović Snežana, Vasiljević Ilija, Negovanović Milanka, Kričak Lazar, Pantović Radoje. "The application of Euler deconvolution for defining the position and depth of magnetic anomaly sources" in Proceedings of the 49th International October Conference on Mining and Metallurgy IOC 2017, Bor, Serbia:University of Belgrade, Technical Faculty in Bor (2017): 471-475
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Analiza trenda tehničke raspoloživosti buldozera na površinskim kopovima Elektroprivrede Srbije
Ignjatović Dragan, Jovančić Predrag, Janković Ivan, Đenadić Stevan, Miletić Filip. "Analiza trenda tehničke raspoloživosti buldozera na površinskim kopovima Elektroprivrede Srbije" in Zbornik radova, VIII Međunarodna konferencija Ugalj, Zlatibor, 11-14 oktobar 2017, Beograd:Jugoslovenski komitet za površinsku eksploataciju (2017): 101-110
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2D Geophysical-geological modeling
Ignjatović Snežana, Đurić Dragana, Pantović Radoje, Vasiljević Ivana, Vasiljević Ilija. "2D Geophysical-geological modeling" in 48th International October Conference on Mining and Metallurgy, University of Belgrade - Technical Faculty in Bor, Bor:University of Belgrade - Technical Faculty in Bor (2016): 61-64
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Lost production costs of the overburden excavation system caused by rubber belt failure
Bugarić Uglješa, Tanasijević Miloš, Polovina Dragan, Ignjatović Dragan, Jovančić Predrag. "Lost production costs of the overburden excavation system caused by rubber belt failure" in Journal of Maintenance and Reliability 14 no. 4, :Polish Maintenance Society (2012): 333-341
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Reliability of Rubber Conveyor Belts as a Part of the Overburden Removal System - Case Study: Tamnava-east Field Open Cast Mine
Bugarić Uglješa, Tanasijević Miloš, Polovina Dragan, Ignjatović Dragan, Jovančić Predrag. "Reliability of Rubber Conveyor Belts as a Part of the Overburden Removal System - Case Study: Tamnava-east Field Open Cast Mine" in Journal of TEHNIČKI VJESNIK = TECHNICAL GAZETTE 21 no. 5 (2014): 925-932
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Measurement of crack displacement on residential structure due to blast-induced vibrations and daily changes of temperature and relative humidity
Negovanović Milanka, Kričak Lazar, Janković Ivan, Zeković Dario, Ignjatović Snežana. "Measurement of crack displacement on residential structure due to blast-induced vibrations and daily changes of temperature and relative humidity" in Technics Technologies Education Management / TTEM 7 no. 1, Sarajevo,BIH:DRUNPP, Sarajevo (2012): 411-417
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Dependability assesment of open-pit mines equpment – study on the bases of fuzzy algebra rules
Tanasijević Miloš, Ivezić Dejan, Jovančić Predrag, Ignjatović Dragan, Bugarić Uglješa. "Dependability assesment of open-pit mines equpment – study on the bases of fuzzy algebra rules" in Eksploatacja i Niezawodnosc – Maintenance and Reliability 15 no. 1, Warsaw, Poland:Polish Maintenance Society (2013): 66-74
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Vibration as deciding parameter during revitalization process for replacing the bucket wheel drive
Bošković Saša, Jovančić Predrag, Ignjatović Dragan, Rakićević Branislav, Maneski Taško. "Vibration as deciding parameter during revitalization process for replacing the bucket wheel drive" in Journal of VIBROENGINEERING 17 no. 1, Kaunas, Lithuania:JVE International Ltd. (2015): 24-32
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Prognostic Analysis Of Slopes Statics Due To Flooding Of The Opencast Coal Mine Tamnava - West Field
Petrović Branko, Vujić Slobodan, Čebašek Vladimir, Gajić Grozdana, Ignjatović Dragan. "Prognostic Analysis Of Slopes Statics Due To Flooding Of The Opencast Coal Mine Tamnava - West Field" in Journal of Mining Science 52 no. 1, Novosibirsk:Pleiades Publishing, Ltd. 2016 (2016): 110-114
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Forecasting the Behaviour of the Rock Mass Before Taking Up the Excavation on a Deeper Layers of the Ore Body Borska Reka
Zlatanović Dragan, Milisavljević Vladimir, Milenko Ljubojev, Dragan Ignjatović, Zoran Stojanović (2015)Zlatanović Dragan, Milisavljević Vladimir, Milenko Ljubojev, Dragan Ignjatović, Zoran Stojanović. "Forecasting the Behaviour of the Rock Mass Before Taking Up the Excavation on a Deeper Layers of the Ore Body Borska Reka" in Mining and Metalurgy Engineering Bor no. 2, Bor:Mining and Metallurgy Institute, Bor (2015): 29-52. https://doi.org/10.5937/MMEB1502029Z
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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 ...Stevan Đenadić, Miloš Tanasijević, Vladimir Milisavljević, Dragan Ignjatović, Predrag Jovančić. "Application of the Fuzzy Model in the Evaluation and Selection of Hydraulic Excavators on Open-Pit Lignite Mine" in SSRN Electronic Journal, Elsevier BV (2021). https://doi.org/10.2139/ssrn.3945617
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Effectiveness Analysis of Different Bucket-wheel Excavators
Coal production in open-pit lignite mines in the Republic of Serbia is performed with continuous work systems. In addition to coal production, the same systems are used for the exploitation of large quantities of overburden. According to the reliability concept, continuous systems are in linear connection. If the failure occurs in one part of the system, that will produce a downtime of the entire system. The initial and most important factor of continuous systems is the bucket-wheel excavator. It ...Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić. "Effectiveness Analysis of Different Bucket-wheel Excavators" in 8th International Conference Mining and Environmental Protection, Sokobanja, 22-25 September 2021, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2021)
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Analiza primene višekriterijumskih metoda u optimizaciji izbora hidruličnih bagera na površinskim kopovima uglja
Hidraulični bageri primenjuju se u različitim oblastima privrede a najzastupljeniji su u građevinarstvu i rudarstvu. Na površinskim kopovima sa kontinualnim sistemima, klasifikuju kao pomoćna mehanizacija a na površinskim kopovima sa diskontinualnim sistemima, kao osnovna mehanizacija. Kako je u oba slučaja njihova primena neizostavna, važno je izvršiti adekvatnu analizu postojećih podataka, u cilju optimizacije izbora tipa hidrauličnog bagera u odnosu na uslove rada datog površinskog kopa. U radu su opisane različite višekriterijumske metode koje su korišćene za analizu hidrauličnih bagera. ...... primene višekriterijumskih metoda u optimizaciji izbora hidruličnih bagera na površinskim kopovima uglja Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Filip Miletić, Ivan Janković Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Analiza primene višekr ...
... višekriterijumskih metoda u optimizaciji izbora hidruličnih bagera na površinskim kopovima uglja | Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Filip Miletić, Ivan Janković | Tehnika | 2019 | | 10.5937/tehnika1903369D http://dr.rgf.bg.ac.rs/s/repo/item/0005608 Дигитални репозиторијум Рударско-геолошког ...
... D. JOVANČIĆ, Univerzitet u Beogradu, 621.879.45 Rudarsko-geološki fakultet, Beograd DOI:10.5937/tehnika1903369D DRAGAN M. IGNJATOVIĆ, Univerzitet u Beogradu, Rudarsko-geološki fakultet, Beograd FILIP M. MILETIĆ, Univerzitet u Beogradu, ...Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Filip Miletić, Ivan Janković. "Analiza primene višekriterijumskih metoda u optimizaciji izbora hidruličnih bagera na površinskim kopovima uglja" in Tehnika, Centre for Evaluation in Education and Science (CEON/CEES) (2019). https://doi.org/10.5937/tehnika1903369D
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Industrija 4.0 - koncept prediktivnog održavanja 4.0 (PdM 4.0) u rudarstvu
Četvrtu industrijsku revoluciju – Industriju 4.0 karakteriše upotreba cyber-fizičkih sistema. Da bi se postigla optimalna strategija održavanja (ali i eksploatacije), neophodno je razviti sisteme koji podržavaju napredne inteligentne sisteme održavanja ili tehnologije pametnog održavanja. Iz toga su proizašli postulati Prediktivnog održavanja 4.0 (PdM 4.0) koji definišu veoma blisku budućnost u oblasti održavanja tehničkih sistema pa i rudarske opreme. PdM 4.0 uključuje iskorišćenje snage veštačke inteligencije za stvaranje stalnog uvida u otkrivanje uzroka i anomalija u radu opreme, koje se ...Predrag Jovančić, Vesna Damnjanović, Dragan Ignjatović, Miloš Tanasijević, Stevan Đenadić. "Industrija 4.0 - koncept prediktivnog održavanja 4.0 (PdM 4.0) u rudarstvu" in IX Međunarodna konferencija UGALJ 2019, Zlatibor, Srbija, 23-26. oktobar 2019., Jugoslovenski komitet za površinsku eksploataciju (2019)
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The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers
One of the most important prerequisites for the successful operation of the open-cast lignite mine is to carry out all the auxiliary works timely with the necessary quality. The most important and most commonly used auxiliary machines are bulldozers. Engaging time of bulldozers use is in direct relation with the coefficients of the time and capacity utilization of the continuous system for the excavation of coal and tailings, which indicates their importance. More than 100 bulldozers have been hired ...... Dragan Ignjatović, Predrag Jovančić, Stevan Đenadić, Ivan Janković, Ivica Ristović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers | Dragan Ignjatović, Predrag ...
... 25 - 28 September 2019, Vrdnik, Serbia THE OPTIMIZATION OF AUXILIARY MACHINERY IN OPEN-CAST LIGNITE MINES: A CASE STUDY OF BULLDOZERS Dragan Ignjatović!, Predrag Jovančić!, Stevan Đenadić!, Ivan Janković?, Ivica Ristović! !- University ог Belgrade – Faculty ог Mining and Geology, Belgrade, SERBIA ...Dragan Ignjatović, Predrag Jovančić, Stevan Đenadić, Ivan Janković, Ivica Ristović. "The optimization of auxiliary machinery in open-cast lignite mines: a case study of bulldozers" in 7th International Symposium Mining and Environmental Protection, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2019)
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Indeksi kontrole održavanja i korišćenja rotornog bagera
Razvoj površinske eksploatacije se u velikom stepenu zasniva na svestranoj mehanizaciji rudarskih radova. Kako bi se zadovoljili potrebni kapaciteti, neophodna je primena savremene mehanizacije, velikih kapaciteta i pouzdanosti u radu. Naime, sa stepenom povećanja mehanizovanosti radova smanjuje se broj zaposlenih radnika, povećava produktivnost rada, smanjuju troškovi po jedinici proizvoda, a samim tim i povećava ekonomičnost površinske eksploatacije. Predmet istraživanja su rotorni bageri SRs 1200 koji predstavljaju samohodne mašine kontinuiranog dejstva namenjene za otkopavanje jalovine i korisne supstance na površinskim ...Jovana Mitrović, Predrag Jovančić, Dragan Ignjatović, Stevan Đenadić, Filip Miletić. "Indeksi kontrole održavanja i korišćenja rotornog bagera" in XI Međunarodna konferencija "Ugalj i kritični minerali 2023", CCM 2023, Zlatibor, 11-14. oktobar 2023., Beograd : Jugoslovenski komitet za površinsku eksploataciju (2023)
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Development of the Cost-Based Model for Monitoring the Lifetime of the Earth Moving Machines
This paper presents the model for the identification of reference points on the lifetime curve of engineering systems. This curve commonly represents the increase and decline of failure in relation to time. A direct correlation between failure rate and costs is assumed in this paper, therefore, statistical and empirical analysis of costs provided reference points. This approach is used for positioning stages of the engineering system’s lifetime with a minimal number of failures and costs, regardless of whether these ...Electrical and Electronic Engineering,Industrial and Manufacturing Engineering, Control and Optimization, Mechanical Engineering, Computer Science (miscellaneous), Control and Systems EngineeringUgljesa Bugarić, Milos Tanasijević, Stevan Djenadić, Dragan Ignjatović, Ivan Janković. "Development of the Cost-Based Model for Monitoring the Lifetime of the Earth Moving Machines" in Machines, MDPI AG (2022). https://doi.org/10.3390/machines10110995