Претрага
2364 items
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Coal homogenization stockyard sizing “Tamnava – Zapad” case study
... stacked in 25 to 150 layers. The example in Figure 2 shows the problem when the pit operates at a lower capacity, and in a zone containing coal with a small quality range. To avoid the stacker operating below minimum travel speed, it will occasionally have to stop and stack, which is not rare in practice ...
... reserves at the stockyard is shown in Figure 4 and Table 1 on the example of the "Tamnava - Zapad" pit. The example shows stacking in two rows, in four and six piles when the stacking capacity equals the reclaiming capacity, because 2 reclaimers and one stacker are used. Figure 4. Number of ...
... the "Tamnava – Zapad" pit Thus for the maximum hourly pit capacity of 5000 t and the permitted speed range of the stacker (4-20 m/min) coal can be stacked in 16 to 90 layers. For a more realistic hourly capacity, the minimum and maximum number of layers changes. For a pit rate of 3000 t/h, coal ...Božo Kolonja, Dinko Knežević, Ranka Stanković, Dejan Stevanović, Detlef Trummer. "Coal homogenization stockyard sizing “Tamnava – Zapad” case study" in Proceedings of 13th International Symposium Continuous Surface Mining, ISCSM 2016, / (2016)
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Deformation and bearing capacity of buried material near the shaft opening at the open pit mine “Zagradje” – open pit 2”
Ljubojev Milenko, Ignjatović Dragan, Ljubojev Vesna, Đurđevac Ignjatović Lidija, Rakić Dragoslav (2010)Ljubojev Milenko, Ignjatović Dragan, Ljubojev Vesna, Đurđevac Ignjatović Lidija, Rakić Dragoslav. "Deformation and bearing capacity of buried material near the shaft opening at the open pit mine “Zagradje” – open pit 2”" in Mining Enginerering = Rudarski radovi no. 2, Bor, Srbija:Mining and metallurgy institute Bor (2010): 115-122
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History of the development of the hydrodynamic model of the open pit mine “Drmno”, Serbia
With the creation of a hydrodynamic model, the need for it usually ceases until some next moment when the model needs to be updated and used for the set task for the necessary project documentation or dedicated studies. It is relatively rare that almost every year the model is improved and used for forecast calculations. The paper presents the basic characteristics and development of the hydrodynamic model of the open pit mine “Drmno” for 25 years. This open pit ...Dušan Polomčić, Jelena Ratković, Vesan Ristić Vakanjac. "History of the development of the hydrodynamic model of the open pit mine “Drmno”, Serbia" in National Conference with International Participation “GEOSCIENCES 2023”, Review of the Bulgarian Geological Society , Sofia : Bulgarian Geological Society (2023)
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Human factor risk management procedures applied in the case of open pit mine
Snežana Kirin, Aleksandar Sedmak, Wei Li, Miodrag Brzaković, Igor Miljanović, Ana Petrović, Simon Sedmak (2021)Risk management aims to provide a controlled work environment to ensure the safe operation of the high-risk systems. It is a dynamic process which work in a continual state of change. The issue of human factor risk and rules and regulations in open pit mine is a main focus of this paper in order to develop predictive models of behavior of workers in relation to compliance with the procedures and rules. Presented survey was conducted in open pit coal ...Snežana Kirin, Aleksandar Sedmak, Wei Li, Miodrag Brzaković, Igor Miljanović, Ana Petrović, Simon Sedmak. "Human factor risk management procedures applied in the case of open pit mine" in Engineering Failure Analysis (2021). https://doi.org/https://doi.org/10.1016/j.engfailanal.2021.105456
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Some models for determination of parameters of the soil oscillation law during blasting operations
... a Open Pit near Despotovac. 4.1. Experimental Investigation in the VelikiKrivelj Open Pit 4.1.1. General Characteristics of the Work Environment in the Veliki Krivelj Open Pit In the Veliki Krivelj Open Pit we performed experimental investigations on copper ore [7]. The basic physical and mechanical ...
... two parameters, K and n appear and they are conditioned both by rock mass characteristics and blasting conditions. The practical part of this study includes experimental investigations performed in the Veliki Krivelj Open Pit in the Bor District located in Eastern Serbia and investigations carried out ...
... components vt, vv, and vl, and the resulting oscillation velocities vrez for blasting from I to II of a total of ten measuring points MM are given in Table 4. Energies 2016, 9, 617 12 of 15 Table 4. Survey of blasting parameters and measurement results in the Kovilovača Open Pit Pit. No. MM r (m) Q ...Suzana Lutovac, Dragan Medenica, Branko Gluščević, Rade Tokalić, Čedomir Beljić. "Some models for determination of parameters of the soil oscillation law during blasting operations" in Energies, Basel, Switzerland : MDPI (2018). https://doi.org/10.3390/en9080617
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Razvoj ARCGIS geobaze površinskog kopa korišćenjem UML CASE alata
... performed on data originating from the pre-project and feasibility study for opening and developing the “Field G” open pit (Idejni projekat sa studijom opravdanosti otvaranja i izgradnje površinskog kopa “Polje G”). Open pit "Field G" is currently not in function. Its opening, preliminary scheduled for ...
... Tesla” power plant, even after the open pit “Veliki Crljeni” is closed. The geodatabase has been populated with data in two ways: by import of relevant data available in appropriate electronic form, from the BpUBS database [Gojak et al., 2011] and by direct import in ArcMap. Figure 6 depicts the development ...
... deposit modeling tools, and 3D extension. In the era of web publication of data in all areas, we plan to create a web GIS portal with contents from the OpmGIS database. ACKNOWLEDGMENTS This paper has been realized in the scope of the project “Improving the technology of open pit exploitation of lignite ...Aleksandra Tomašević, Ljiljana Kolonja, Ivan Obradović, Ranka Stanković, Olivera Kitanović. "Razvoj ARCGIS geobaze površinskog kopa korišćenjem UML CASE alata" in Podzemni radovi, Beograd : Univerzitet u Beogradu - Rudarsko-geološki fakultet (2012)
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Analysis of a simplified model for determining rock mass oscillation velocity at the Kovilovača open pit
... 6.2 Method of blasting in the open pit Kovilovača Measurements of seismic shocks in the open pit Kovilovača were performed during blasting, conducted for the purpose of deposit exploitation [9]. Two blasting operations were performed. Balkanit 60/1500, detonex 65/1500 and ANFO 70/1500 were used ...
... KOVILOVAČA OPEN PIT Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia suzana.lutovacrgf.bg.ac.rs, milos.gligoricorgf.bg.ac.rs, jelena.majstorovicorgf.bg.ac.rs, luka.crnogoracrgf.bg.ac.rs Abstract: In mining, explosives ...
... the maximal exsplosive amount by deceleration interval Q,, overali borehole depth L , and average stemming length L_ are presented in Table 1. Table 1. Review of blasting paramelerv at the Kovilovača open pit ETHESFITIFT"TEARZIETI 3623.0 | 108.0 842.0 2 36 3 264.0 | _92.0 918.0 2 2 6.3 C ...Suzana Lutovac, Miloš Gligorić, Jelena Majstorović, Luka Crnogorac. "Analysis of a simplified model for determining rock mass oscillation velocity at the Kovilovača open pit" in 9th International Conference Mining and Environmental protection MEP, 24 – 27 May 2023, Sokobanja, Serbia, Belgrade : University of Belgrade-Faculty of mining and geology (2023)
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Exhumation history of the Juhor Mts. in central Serbia, the Northern Serbo–Macedonian Subunit
Uros Stojadinovic, Hannah Pomella, Nemanja Krstekanić, Bojan Kostić, Maja Maleš, Nikola Randjelovic, Miloš Radonjić (2024)Northern Serbo–Macedonian Subunit, low-t thermochronology, kinematic analyses, extensional deformationsUros Stojadinovic, Hannah Pomella, Nemanja Krstekanić, Bojan Kostić, Maja Maleš, Nikola Randjelovic, Miloš Radonjić. "Exhumation history of the Juhor Mts. in central Serbia, the Northern Serbo–Macedonian Subunit" in Geologica Carpathica, Jun 2024, Central Library of the Slovak Academy of Sciences (2024). https://doi.org/10.31577/GeolCarp.2024.12
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Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings
... out at Majdanpek open pit, located in the northern part of eastern Serbia and the investigations carried out during mass blasting at Nepričava open pit, located in central Serbia. In this paper, parameters n and K from Sadovskii’s equation were determined in three ways—models in the given work environment ...
... research carried out in Majdanpek open pit, situated in northern part of east Serbia and, • Investigations carried out during mass blasting in Nepričava open pit, located in central Serbia. Minerals 2018, 8, 70 9 of 18 4.1. Experimental Investigation in Majdanpek Open Pit 4.1.1. General Chara ...
... ics of the Work Environment in Majdanpek Open Pit In Majdanpek open pit we performed experimental investigations on copper ore [17]. The basic physical and mechanical properties of the rock mass were determined on samples in the laboratory. By examining the physical and mechanical properties of the ...Suzana Lutovac, Branko Gluščević, Rade Tokalić, Jelena Majstorović, Čedomir Beljić. "Models of Determining the Parameters of Rock Mass Oscillation Equation with Experimental and Mass Blastings" in Minerals, Basel : MDPI AG, Basel, Switzerland (2018). https://doi.org/10.3390/min8020070
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Primary crusher site selection in open pit mines - case study in Sungun copper mine
Facility site selection, (such as Primary or in pit Crusher location) is one of the most important steps in mine de-sign process that has a significant impact on economy of the mining operation. This study covers an attempt to find the optimal location forprimary crusher in order to support the expansion of Sungun copper mine, which is the second largest open pit mine in Iran. Recent exploration drilling has led to a considerable increase in the ore reserve. Therefore, ...Ali Nasirinezhad, Dejan Stevanović, Dragan Ignjatović, Mehdi Rahmanpou. "Primary crusher site selection in open pit mines - case study in Sungun copper mine" in Underground mining engineering, Универзитет у Београду, Рударско-геолошки факултет (2021)
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Application of MCDA in the determination of optimal block size for open-pit modelling and mine planning
The process of creating a geological block model as the basis for a further detailed design and planning of mining operations is a very responsible task. Errors made during this initial process are transferred to all other phases of the mining project. Certainly, one of the most important decisions for the modelling process is the choice of the appropriate size of the blocks that form the model itself. The determination of the optimal block size is not a simple ...dimenzije minibloka, višekriterijumska analiza, AHP, modeliranje ležišta, planiranje na površinskim kopovimaPetar Marković, Dejan Stevanović, Milica Pešić Georgiadis, Mirjana Banković. "Application of MCDA in the determination of optimal block size for open-pit modelling and mine planning" in Underground Mining Engineering, Univerzitet u Beogradu, Rudarsko-geološki fakultet (2021)
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Stability analysis on slope PK dacite Ceramide
Safe surface mining exploitation of minerals is possibile only if stable bench and overall slopes in the open pit are construct. In order to to construct stable open pit slopes, it is necessary to carry out certain physical and mechanical laboratry testing of mineral raw materials in order to determine the geomechnical calculating parameters. These calculating parameters represent the base ground for performing slopes analyses and the open pit design. In this paper, an stability analysis of benches and ...Vladimir Čebašek, Veljko Rupar, Vladimir Ivoš, Vladimir Petković. "Stability analysis on slope PK dacite Ceramide" in VIII International geomechanics conference, Scientific And Technical Union of Mining, Geology and Metallurgy (2018)
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Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”
... mining and surveying works, are displayed by the integration of the un- derground mining project into the existing mine chambers, infrastructure structures on the terrain surface and into the open pit. Large number of mining and surveying works will follow the completion of this project, but in the meantime ...
... 2010 by using the open pit method of mining at the central and northern part of the deposit up to the +410m. Above this level, in the southern part, 1,120,000t of ore reserves remained. A feasibility study on the pos- sible expansion of open pit established that open pit mining of this part of ...
... mine chambers. Figure 5 Parts of open pit benches in interaction with bench drifts The extraction activity in view of mine surveying includes: a priori accu- racy assessment of geometry elements for setting out the mine chambers designed and the setting and scanning of the as- built condition. ...Aleksandar Milutinović, Aleksandar Ganić, Thamer Rayes Diyab, Rade Tokalić, Meri Ganić. "Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”" in Revista Escola de Minas, School of Mines Magazine, Sao paulo, Brasil : SciELO (2015)
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Ground surface subsidence monitoring using sentinel-1 in the “Kostolac” open pit coal mine
Zoran Gojković, Milan Kilibarda, Ljiljana Brajović, Miloš Marjanović, Aleksandar Milutinović, Aleksandar Ganić (2023)Open pit coal mining affects surrounding populated areas, resulting in terrain surface deformation. Surface deformation should be monitored as often as possible to control deformations and prevent potential incidents. This paper analyzes time series deformation estimated from the Sentinel-1 satellite images using the Persistent Scatterer Interferometry method to monitor subsidence rates caused by open pit mining activities. It is possible to measure deformations using classical geodetic methods, but those are rarely used in practice because they are time-consuming and ...Zoran Gojković, Milan Kilibarda, Ljiljana Brajović, Miloš Marjanović, Aleksandar Milutinović, Aleksandar Ganić. "Ground surface subsidence monitoring using sentinel-1 in the “Kostolac” open pit coal mine" in Remote Sensing (2023). https://doi.org/10.3390/rs15102519
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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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Hybrid Model for Optimisation of Waste Dump Design and Site Selection in Open Pit Mining
Aleksandar Doderovic, Svetozar-Milan Doderovic, Sasa Stepanovic, Mirjana Bankovic, Dejan Stevanovic (2023)Waste management is an unavoidable technological operation in the process of raw material extraction. The main characteristic of this technological operation is the handling of large quantities of waste material, which can amount to several hundred million cubic metres. At the same time, this operation must comply with all administrative and environmental standards. Therefore, optimising waste rock management (particularly haulage and dumping) has the potential to significantly improve the overall value of the project. This paper presents a hybrid ...Aleksandar Doderovic, Svetozar-Milan Doderovic, Sasa Stepanovic, Mirjana Bankovic, Dejan Stevanovic. "Hybrid Model for Optimisation of Waste Dump Design and Site Selection in Open Pit Mining" in Minerals, MDPI AG (2023). https://doi.org/10.3390/min13111401
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Mineralogy and characterization of deposited particles of the aero sediments collected in the vicinity of power plants and the open pit coal mine: Kolubara (Serbia)
Cvetkovic Željko, Logar Mihovil, Rosić Aleksandra. "Mineralogy and characterization of deposited particles of the aero sediments collected in the vicinity of power plants and the open pit coal mine: Kolubara (Serbia)" in Environmental Science and Pollution Research 20 no. 5, Berlin : Heidelberg:Springer (2013): 3034-3049. https://doi.org/10.1007/s1356-012-1154-z
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Application of the unmanned aerophotogrammetry in monitoring conditions and changes at the open pit mines
Vujić Slobodan, Radosavljević Nenad, Milutinović Aleksandar, Gigov Mihajlo. "Application of the unmanned aerophotogrammetry in monitoring conditions and changes at the open pit mines" in Journal ”Mining and Metallurgy Engineering” no. in print, Bor:Mining and Metallurgy (2016): 1-6. https://doi.org/DOI 10.5937/MMEB160100IV
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Measurement and analysis of blast-induced vibrations in the open pit copper mine „Veliki Krivelj“Bor.
Kričak Lazar, Negovanović Milanka, Janković Ivan, Zeković Dario. "Measurement and analysis of blast-induced vibrations in the open pit copper mine „Veliki Krivelj“Bor." in Proceedings of the XIth National Conference with International Participation of the Open and Underwater Mining of Minerals, Varna , Bulgaria:Scientific and Technical Union of mining, geology and metallurgy (2011): 163-170
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Stabilization and monitoring of the slope deformation appearance on marl open-pit Filijala in order to minimize the risk of exploitation process interruption
Gojković Nebojša, Čebašek Vladimir, Ganić Aleksandar, Milutinović Aleksandar. "Stabilization and monitoring of the slope deformation appearance on marl open-pit Filijala in order to minimize the risk of exploitation process interruption" in V-th International geomechanics conference 1, Varna, Bulgaria:Scientific and Technical Union of Mining, Geology and Metallurgy (2012): 220-227