Претрага
1401 items
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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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Компарација метода XRF i ICP-MS на узорцима угља и продуктима сагоревања
Бранко Костић, Ксенија Ераковић, Дејан Прелевић, Сабина Ковач, Драгана Животић. "Компарација метода XRF i ICP-MS на узорцима угља и продуктима сагоревања" in Записници Српског геолошког друштва (2023)
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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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Post Early Miocenevertical-axis clockwise rotation in the West Vardar Zone of Serbia
... Emo Marton, Vesna Cvetkov, Dragana Jovanović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Post Early Miocenevertical-axis clockwise rotation in the West Vardar Zone of Serbia | Vesna Lesić, Emo Marton, Vesna Cvetkov, Dragana Jovanović | Environmental, ...
... , Slovakia Post Early Miocenevertical-axis clockwise rotation in the West Vardar Zoneof Serbia VESNA LESIĆ!, EMO MARTON?, VESNA CVETKOV" and DRAGANA JOVANOVIĆ! 1 – Republic Geodetic Authority, Department ofGeomagnetism and4erohomy, Bulevar vojvode Mišića 39, 11000 Belgrade, Serbia 2 — Mining ...
... Огедаћома Mgr. Peter Kiss Mgr. Samuel Rybar, PhD. Mgr. Leonard Zahradnik e ComeniusUniversity in Bratislava ISBN: 978-80-223-4614-6 Зијап, M., Csibri, T., Kiss, P. and Rybar, S. (Eds.): Environmental, Structural and Stratigraphical Evolution of the Western Carpathians: 11'h ESSEWECAConference ...Vesna Lesić, Emo Marton, Vesna Cvetkov, Dragana Jovanović. "Post Early Miocenevertical-axis clockwise rotation in the West Vardar Zone of Serbia " in Environmental, Structural and Stratigraphical Evolution of the Western Carpathians, 11th ESSEWECA Conference, Geophysical Institute, Slovak Academy of Sciences Bratislava (2018)
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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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The ‘Umka’ landslide
We present an in-depth landslide map of the ‘Umka’ landslide near Belgrade, Serbia, at a scale of 1:5000. The map delineates elements at risk, primarily buildings and road infrastructure impacted by the landslide displacements of several cm per year, introduced during frequent reactivation stages. The Main map results from a survey of over 350 buildings and more than 7 km of state and local roads. The acquisition techniques included engineering geological field mapping, building survey, and visual interpretation of ...rizik od klizišta, elementi rizika, kartiranje pomoću drona, ispitivanje objekata, geotehnički monitoringUroš Đurić, Dragana Đurić, Miloš Marjanović, Biljana Abolmasov, Ivana Vasiljević. "The ‘Umka’ landslide" in Journal of Maps, Informa UK Limited (2024). https://doi.org/10.1080/17445647.2024.2418580
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Geochemical evaluation of dolostone deposits in Montenegro: Implications for potential industrial applications
Darko Bozovic, Vladimir Simic, Dragan Radulovic, Slobodan Radusinovic, Vesna Matovic, Anja Terzic (2024)This study presents a unique model for assessing the dependability of continuous parts of combined systems in open-pit mining through the application of fuzzy logic. Continuous sub-systems as part of the combined system of coal exploitation in surface mines have the basic function of ensuring safe operation, high capacity with high reliability, and low costs. These subsystems are usually part of the thermal power plant’s coal supply system and ensure stable fuel supply. The model integrates various independent partial ...примарне сировине, минералогија, физичко-механичка својства, технолошка својства, наука о материјалимаDarko Bozovic, Vladimir Simic, Dragan Radulovic, Slobodan Radusinovic, Vesna Matovic, Anja Terzic. "Geochemical evaluation of dolostone deposits in Montenegro: Implications for potential industrial applications" in Science of Sintering, Bor, August 2024, National Library of Serbia (2024). https://doi.org/10.2298/SOS240701029B
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Analiza pouzdanosti dozera angažovanih na površinskim kopovima RB Kolubara
U radu je izvršena uporedna analiza pouzdanosti transportnih sistema dozera koji rade na površinskim kopovima Rudarskog basena Kolubara. Period za koji je vršena analiza je prvih deset godina eksploatacije. Efikasnost tehnološkog procesa na otkopavanju korisne mineralne sirovine i otkrivke u velikoj meri zavisi od rada dozera. Iskorišćene su matematičke metode za aproksimaciju i identifikaciju zabeleženih vremena u radu, kako bi se dobili analitički pokazatelji pouzdanosti. Na ovaj način se bitno podiže kvalitet upravljanja procesom eksploatacije i održavanja mašina na ...... ANALIZA POUZDANOSTI DOZERA ANGAŽOVANIH NA POVRŠINSKIM KOPOVIMA RUDARSKOG BASENA KOLUBARA Filip Miletić[footnoteRef:1], Dragan Milčić2, Miloš Tanasijević1, Miloš Milovančević2 [1: ] 1Univerzitet u Beogradu, Rudarsko–geološki fakultet, Đušina 7, Beograd, Srbija 2Univerzitet ...
... kvalitetu, Kragujevac, 2005.; [6] Tomašević M. Model za donošenje odluka u procesima prepoznavanja tipa funkcije pouzdanosti brodskih postrojenja, Doktorska disertacija, Univerzitet u Novom Sadu, Tehnički fakultet Mihajlo Pupin, Zrenjanin, 2007.; [7] Milčić D., Mijailović M. Analiza pouzdanosti mašinskih delova ...
... mašinskih sistema, Univerzitet u Nišu, Mašinski fakultet, 2005. [10] Milčić D., Mijajlović M. Pouzdanost mašinskih sistema – Zbirka rešenih zadataka, Univerzitet u Nišu, Mašinski fakultet, 2008.; [11] Tanasijević M., Sigurnost funkcionisanja mehaničkih komponenti rotornog bagera, Doktorska disertacija, ...Filip Miletić, Dragan Milčić, Miloš Tanasijević, Miloš Milovančević. "Analiza pouzdanosti dozera angažovanih na površinskim kopovima RB Kolubara" in 10th International Conference Coal 2021, Jugoslovenski komitet za površinsku eksploataciju, Zlatibor (2021)
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Dimenzionisanje deponija za ugalj
... Kolonja, Ranka Stanković, Aleksandra Tomašević, Dragana Nišić Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Dimenzionisanje deponija za ugalj | Dinko Knežević, Božo Kolonja, Ranka Stanković, Aleksandra Tomašević, Dragana Nišić | Jedanaesta međunarodna konferencija ...
... lokaciji potrošača) koristi samo kao rezerva. -100 -50 0 50 100 150 Ja nu ar Feb ru ar M ar t A pr il M aj Ju n Ju l A vg ust S ep te m ba r O kt oba r N ove m ba r D ece m ba r mesec od no s pr oi zv od nj e i p ot ro šn je u gl ja , h ilj ad a to n a ...
... a raspoloživi odlagači i izuzimači omogućavaju visine deponija i iznad 22 m. Međutim, valja računati i na mogućnosti mašina kojima se ugalj odlaže i izuzima. Odlagači obično rade u rasponu brzina 4-20 m/s, a izuzimači 1- 6 m/s. Za obe mašine je bolje da rade sa manjim brzinama. Ako je dužina deponije ...Dinko Knežević, Božo Kolonja, Ranka Stanković, Aleksandra Tomašević, Dragana Nišić. "Dimenzionisanje deponija za ugalj" in Jedanaesta međunarodna konferencija o površinskoj eksploataciji OMC, 2014, Zlatibor, 15-18 oktoba 2014, Zlatibor : Jugoskovenski komitet za površinsku eksploataciju (2014)
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A geophysical study of the Eastern Vardar Zone ophiolite: An overview
Dragana Đurić, Vesna Cvetkov, Vladica Cvetković. "A geophysical study of the Eastern Vardar Zone ophiolite: An overview" in Émile Argand Conference - 13th Workshop on Alpine Geological Studies - September 7th-18th 2017 in Serbia, Zlatibor Mts., Beograd:University of Belgrade - Faculty of Mining and Geology (2017): 31-31
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Geoheritage Object-Natural Park Šargan Mokra Gora
Milovanović Dragan, Amidžić., Knežević Slobodan, Banjac Nenad, Kličković M., Maran Aleksandra (2011)Milovanović Dragan, Amidžić., Knežević Slobodan, Banjac Nenad, Kličković M., Maran Aleksandra. "Geoheritage Object-Natural Park Šargan Mokra Gora" in Proceedings, 1st international conference “Harmony of nature and Spirituality in Stone”, Kragujevac:Stone Studio Association (2011): 143-150
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Објекти геолошке баштине у сливу реке Височице
Гајић Виолета, Миловановић Драган, Вакањац Борис, Мандић М., Ристић Вакањац Весна. "Објекти геолошке баштине у сливу реке Височице" in Пиротски зборник no. 42, Пирот:Народнa библиотекa Пирот (2017): 209-224. https://doi.org/10.5937/pirotzbor1742209G
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Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine
Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović (2019)Availability is one of the most used terms in maintainability engineering. This concept is used to denote: The quality of service of an engineering system, i.e., machines, weak points’ analysis, asset management, as well as making decisions in the process of life cycle management. Availability is an overall indicator and contains partial indicators that are oriented towards reliability, maintenance, and logistical support. Availability presents a variable value and changes in time and space. Usually, availability is shown as the ...... of partial indicators of the availability of new and old machines. AHP Preferences B1-N (B2-N, B3-N) B1-O B2-O B3-O R M S R M S R M S R M S R 1 1/2 1/3 1 1 1 1 1/3 1/3 1 2 2 M 2 1 1/2 1 1 1 3 1 1 1/2 1 1 S 3 2 1 1 1 1 3 1 1 1/2 1 1 As a representative example in the continuation of the analysis ...
... 1. R 0.7 0.3 0.8 0.2 0.6 0.4 M 0.4 0.6 0.7 0.3 0.5 0.5 S 0.3 0.7 0.6 0.4 0.6 0.4 2. R 0.6 0.4 0.6 0.4 0.3 0.7 M 0.6 0.4 0.8 0.2 0.6 0.4 S 0.5 0.5 0.4 0.6 0.5 0.5 3. R 0.9 0.1 1 1 M 0.4 0.6 0.6 0.4 0.7 0.3 S 0.2 0.8 0.6 0.4 0.7 0.3 4. R 0.5 0.5 0.7 0.3 0.4 0.6 M 0.7 0.3 0.7 0.3 0.7 0.3 S 1 1 0 ...
... 1. R 0.6 0.4 0.7 0.3 0.8 0.2 M 0.6 0.4 0.6 0.4 0.4 0.6 S 0.3 0.7 0.5 0.5 0.4 0.6 2. R 0.9 0.1 0.5 0.5 0.2 0.8 M 0.8 0.2 0.8 0.2 0.5 0.5 S 0.4 0.6 0.1 0.9 0.4 0.6 3. R 0.1 0.9 0.3 0.7 0.7 0.3 M 0.6 0.4 0.9 0.1 0.8 0.2 S 0.9 0.1 0.8 0.2 1 4. R 0.5 0.5 0.2 0.8 1 M 0.3 0.7 0.5 0.5 0.1 0.9 S 0.8 0 ...Stevan Đenadić, Dragan Ignjatović, Miloš Tanasijević, Uglješa Bugarić, Ivan Janković, Tomislav Šubaranović. "Development of the Availability Concept by Using Fuzzy Theory with AHP Correction, a Case Study: Bulldozers in the Open-Pit Lignite Mine" in Energies, MDPI AG (2019). https://doi.org/10.3390/en12214044
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Comparative analysis of correlation coefficients in mineralogical and geophysical data from the mine tailing site “Rudnik” (Serbia)
Vesna Cvetkov, Filip Arnaut, Dragana Životić. "Comparative analysis of correlation coefficients in mineralogical and geophysical data from the mine tailing site “Rudnik” (Serbia)" in 5th Congress Geologists of the Republic of North Macedonia, Ohrid, 28-29. 10. 2024, Македонско геолошко друштво (2024)
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The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis
Earth-Surface Processes, Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeLjiljana Vasić, Dragana Ž. Živojinovic, Vladana Rajaković-Ognjanović, Huang Fen, Cao Jianhua. "The subthermal potential of karstic groundwater of Kučaj–Beljanica region in Serbia estimated by the multivariate analysis" in Environmental Earth Sciences, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s12665-021-09392-1
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Assessment of the Geotouristic Values of Devil’s Town, Serbia
Danijela Vukoičić, Danica Srećković-Batoćanin, Aleksandar Valjarević, Dušan Ristić, Milena Nikolić, Dragana Valjarević (2021)Geotouriyam, Geonasledje, M-GAM, Komparativna analiya, Đavolja Varoš, Peščane piramide, Stob Piramide, Melnik piramide, SrbijaDanijela Vukoičić, Danica Srećković-Batoćanin, Aleksandar Valjarević, Dušan Ristić, Milena Nikolić, Dragana Valjarević. "Assessment of the Geotouristic Values of Devil’s Town, Serbia" in Geologia Croatica, Croatian Geological Survey (2021). https://doi.org/10.4154/gc.2021.11
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Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia
... org/10. 4095/226015 Hossin M, Sulaiman MN (2015). A Review on Evaluation Metrics for Data Classification Evaluations IJDKP. https://doi.org/10.5121/ ijdkp.2015.5201 Hristov S, Karajovanovik M, Stračkov M (1965) Basic geological map of SFRJ, sheet Kavadarci, M 1:100,000 (map & interpreter), ...
... 202 1-0503-729 Al-Rawashdeh S, Saleh B, Hamzah M (2006) The use of Remote Sensing Technology in geological Investigation and mineral Detection in El Azraq-Jordan. Cybergeo. https://doi.org/10. 4000/cybergeo.2856 Bachri I, Hakdaoui M, Raji M et al (2022) Identification of Lithology Using ...
... imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia Filip Arnaut, Dragana Đurić, Uroš Đurić, Mileva Samardžić-Petrović, Igor Peshevski Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР ...Filip Arnaut, Dragana Đurić, Uroš Đurić, Mileva Samardžić-Petrović, Igor Peshevski. "Application of geophysical and multispectral imagery data for predictive mapping of a complex geo-tectonic unit: a case study of the East Vardar Ophiolite Zone, North-Macedonia" in Earth Science Informatics, Springer Science and Business Media LLC (2024). https://doi.org/10.1007/s12145-024-01243-4
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Application of novel Zn-ferrite modified glassy carbon paste electrode as a sensor for determination of Cd(II) in waste water
Stanković Dalibor M, Skrivanj Sandra, Savić Nenad, Nikolić Aleksandar, Vulić Predrag, Manojlović Dragan (2014)Stanković Dalibor M, Skrivanj Sandra, Savić Nenad, Nikolić Aleksandar, Vulić Predrag, Manojlović Dragan. "Application of novel Zn-ferrite modified glassy carbon paste electrode as a sensor for determination of Cd(II) in waste water" in Electroanalysis 26 no. 7, Hoboken, NJ:John Wiley & Sons (2014): 1536-1543. https://doi.org/10.1002/elan.201400095
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Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines
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 ...Ali Nasirinezhad, Dejan Stevanović, Dragan Ignjatović, Petar Marković. "Overwiew of In-Pit Crushing & Conveying Technology in Open Pit Mines" in 8th International Conference MIining And Environmental Protection, Sokobanja, 22-25 September 2021, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia (2021)
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Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina
Fosilni ostaci životinja i biljaka imaju važnu ulogu u rekonstrukciji pleistocenskih paleosredina. U ovom radu opisan je značaj tri grupe životinja: sitnih sisara, herpetofaune I mekušaca. Mada je za rekonstrukciju važan sastav čitave asocijacije, nalasci pojedinih vrsta mogu biti dovoljno indikativni da otkriju tip staništa ili klimatske uslove. Posebnu teškoću pri rekonstrukciji paleosredina u Srbiji predstavlja činjenica da klimatske promene na Balkanskom poluostrvu nisu bile tako oštre kao u srednjoj i zapadnoj Evropi, pa ne postoji drastična razlika u ...... Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina Katarina Bogićević, Draženko Nenadić, Dragana Đurić, Mihajlo Jovanović, Aleksandra Savković Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Sitni, ali ...
... ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina | Katarina Bogićević, Draženko Nenadić, Dragana Đurić, Mihajlo Jovanović, Aleksandra Savković | Zbornik sažetaka III Kongresa geologa Bosne i Hercegovine, Neum, 21.-23.09.2023. | 2023 | | http://dr.rgf ...
... katarina.bogicevic(qyrgf.bg.ac.rs Prof. dr Draženko Nenadić, Univerzitet u Beogradu-Rudarsko-geološki fakultet, Kamenička 6, 11000 Beograd Dr. Dragana Đurić, Prirodnjački muzej, Njegoševa 51, 11000 Beograd Dr. Mihailo Jovanović, IPHES, Institut Catala de Paleoecologia Humana i Evoluci6 Social in ...Katarina Bogićević, Draženko Nenadić, Dragana Đurić, Mihajlo Jovanović, Aleksandra Savković. "Sitni, ali bitni: uloga sitnih sisara, herpetofaune i mekušaca u rekonstrukciji pleistocenskih paleosredina" in Zbornik sažetaka III Kongresa geologa Bosne i Hercegovine, Neum, 21.-23.09.2023., Ilidža : Udruženje geologa Bosne i Hercegovine (2023)