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Упит dcterms_subject_txt:open cast mine

419 items

  • 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 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 ...
    raspoloživost, fazi teorija, AHP višekriterijumska analiza, eksperska ocena, buldozer
    ... Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining. Energies 2019, 12, 2245. [CrossRef] 23. Karimnia, H.; Bagloo, H. Optimum mining method selection using fuzzy analytical hierarchy process-Qapiliq salt mine, Iran. Int. J. Min. Sci. Technol. 2015, 25, 225–230. [CrossRef] ...
    ... Utilization of Overburden and Coal Systems on the Open-Cast Mines of Electrical Power Supply of Serbia—Research Study; Faculty of Mining and Geology: Belgrade, Serbia, 2018. © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and ...
    ... development projects TR 33039, TR 35040 and TR 33025. Acknowledgments: This paper was realized as a part of the projects: “Improvement of Lignite Open cast Technology in Order to Increase Energy Efficiency and Occupational Safety” (TR 33039), “Developed new methods for diagnosis and examination mechanical ...

  • Development of an integrated model for open-pit-mine discontinuous haulage system optimization

    Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević , Dejan Stevanović (2024)
    equipment selection, mine mechanization, expert judgment, linguistic variables, MCDM, FAHP

  • Dewatering system selection at the open cast Drmno using hydrodynamical forcasting calculations

    Polomčić Dušan, Pavlović Vladimir, Šubaranović Tomislav (2012)

  • 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

  • An overview of the application of modern methods of hydrodynamic calculations for groundwater control systems of open cast mines in Serbia

    Polomčić Dušan, Bajić Dragoljub, Ratković Jelena, Ristić Vakanjac Vesna, Čokorilo Ilić Marina (2017)

  • Mine surveying works for the purpose of excavating the remaining reserves of bauxite in the deposit of “Podbracan”

    Aleksandar Milutinović, Aleksandar Ganić, Thamer Rayes Diyab, Rade Tokalić, Meri Ganić (2015)
    ... same as the height of the benches at open pit, for the purpose of using the benches of the mine for com- munication (Figure 4). Figure 4 Geological cross section 36-36'with mine chambers REM: R. Esc. Minas, Ouro Preto, 68(3), 323-330, jul. sep. | 2015326 Mine surveying works for the purpose of ...
    ... - Detailed scanning of the existing 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 ...
    ... accuracy assessment of the spatial position of the point, it being the exit point to the existing bench of the open pit at the elevation +420m. keywords: underground mining, bauxite mine, mine surveying, a priori accu- racy assessment. Aleksandar Milutinovic Associate professor University of Belgrade ...

  • Analysis of the exhaust emissions inventory from auxiliary mining machines

    Stevan Đenadić, Aleksandar Mirković, Jovana Mitrović, Filip Miletić, Predrag Jovančić, Dragan Ignjatović (2023)
    Open-pit coal mines are equipped with a large number of mining machines and vehicles with diesel engines. Due to common daily operation of these machines and vehicles large amounts of exhaust gases which contain numerous pollutants are emitted into the atmosphere. The demand to reduce air pollution induced the activities in developed countries to map and calculate all gases emitted by industries to formulate and select adequate preventive activities. In collaboration with machine manufacturers, emission standards for off-road machines ...
    emissions, mining, auxiliary machines

  • A Fuzzy Expert Model for Availability Evaluation

    Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić (2019)
    Each technical system within itself carries the great potential danger of possible occurrence of failure and damages. Mining machines are characteristic by great investment values, costs of unplanned shutdowns, complex working conditions, and environment and workers hazards. Systematic monitoring of the mining machinery is of great importance for the management of the mining companies. Availability is the overall concept of quality of service. Includes information regard to operating state, an idle state, a standby state and shut down. The ...
    raspoloživost, ekspertski sistem, fazi teorija, buldozeri
    ... bulldozers that operate to three different open pit mines in Serbia was evaluated using the proposed expert model. Machines were compared individually (selected machine at selected open pit mine), but also integral comparisons between machines and open pit mines were made. Obtain results should ...
    ... P., Optimization of operation and costs of auxiliary mechanization in order to increase the utilization of overburden and coal systems on the open cast mines of Public Enterprise "Elektroprivreda" Serbia – research study, Faculty of Mining and Geology, Belgrade, 2018 (in Serbian) ...
    ... AVAILABILITY INDICATORS A n a ly st N o . A v a il a b il it y in d ic a to r Questionnaire: Bulldozer Liebherr – Drmno Open Pit Mine Grade: Excellent Good Average Adequate Poor The degree of affiliation, % 1 R 40 60 M 100 S 100 2 R 20 80 M 100 ...

  • 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.
    ... 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 ...
    ... production planning 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 ...
    ... 41–51 232 Dagdelen, K, 1985, Optimum Multi-Period Open Pit Mine Production Scheduling by Lagrangian Parameteriyation, doktorska disertacija, Colorado School of Mines, Golden, Colorado Dagdelen, K. and Johnson, T.B., l986, Optimum open pit mine production scheduling by Lagrangian parameterization ...

  • A Model for Determining the Dependability of Continuous Subsystems in Coal Mines Using the Fuzzy Logic Approach

    Nikola Stanić, Miljan Gomilanović, Petar Marković, Daniel Krzanović, Aleksandar Doderović, Saša Stepanović (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 ...
    fuzzy logic, max-min composition, continuous part of combined system (CCS), open pit, mining, dependability

  • Geology of the southern part of the Sava-Vardar zone: new constraints from the Klepa Mts.

    Dejan Prelević, Ana Mladenović, Violeta Gajić, Milena Dunčić, Blažo Boev (2024)
    Tethys closure, Scaglia Rossa, intracontinental basalts
    ... formations. SEDIMENTOLOGY AND BIOSTRATIGRAPHY Sedimentological, micropaleontological, and biostratigraphical investigations. of samples from both thc cast and west sides of the Klepa Mountains reveal that the sedimentary rocks are of Upper Cretaceous age. During this period, sedimcntation in this arca ...
    ... Tectonically, the investigated area belongs to the contact zone between the Adriatic microplate (to the west) and the Eurasian margin (to the cast). This contact zone evolved as tectonically active sedimentary basins duc to the convergence of these tectonic plates. Basement formations surrounding ...
    ... на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs IIerru KoHrpec Ha I conoaure Ha PenyOxuka CeBepHa ...

  • Reconstruction of the Tethys' waning in the Balkans: New insights from Upper Cretaceous igneous formations and zircon provenance data

    Dejan Prelević, Kristijan Sokol, Ana Mladenović, Violeta Gajić, Vladica Cvetković (2024)
    geochronology, zircon, provenance
    ... flysch and paraflysch sequences, constituting, the strongest geochronological signal in all samples, whercas they are completely absent further cast (Carpatho-Balkanides). Our zircon provenance data suggest that the Cretaceous sedimentary basins on the European margin werc partially filled ...
    ... histories of these regions. The presence of Permotriassic zircons in thc Upper Cretaceous sediments of the Sava-Vardar Zone and thcir absence further cast challenge the notion of a vast Sava (Tethys) Ocean during the Cretaceous. ACKNOWLEDGEMENT This research is financed by the Science Fund of Serbia ...
    ... на www.dr.rgf.bg.ac.rs The Digital repository of The University of Belgrade Faculty of Mining and Geology archives faculty publications available in open access, as well as the employees' publications. - The Repository is available at: www.dr.rgf.bg.ac.rs IIerru KoHrpec Ha I eonmoaare Ha PenyOxnaka ...

  • A survey of greenhouse gases production in central European lignites

    Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska (2021)
    Lignit, Gasovi sa efektom staklene bašte, Ugljen dioksid, Metan, Azotni oksid
    ... methane forma- tion in the VLN-W2 lignitemay be due to the lower exposure to oxygen conditions compared to those experienced by the lignites of the open- cast mines. This hypothesis seems to be confirmed by a strong, negative dependence between Eh values and CH4 production (Spearman -0.8, p <0.05) (Fig ...
    ... sampling was performed in the Kolubara opencast mine which supplies nearly 75% of the country's lignite (Public Enterprize Electric Power Industry of Serbia, 2020). In Slovenia, samples were obtained from the country's only working coal mine Velenje; a mine which uniquely employs the underground exploitation ...
    ... ota alters the rate, extent anddirection of biological processes. However, with the end of mining operations and cessation of drainage works, most mine workings will naturally be flooded with water. This may lead to the restoration of anaerobic conditions in the deposit and the re- activation of processes ...

  • Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović (2022)
    This work presents a model for determining the availability of continuous systems at open pits by applying fuzzy logic and fuzzy inference systems. The applied model was formed by the synthesis of independent partial indicators of availability. The model is based on an expert system for assessing the availability of continuous mining systems. The availability of the system, as a complex state parameter, is decomposed into the partial indicators, reliability, and convenience of maintenance, and the fuzzy compositions, used ...
    системи, континуални систем експоатације, површински коп, рударство, расположивост, фази логика, max–min композиција, min–max композиција

  • Evidence of Variscan and Alpine tectonics in the structural and thermochronological record of the central Serbo-Macedonian Massif (south-eastern Serbia)

    Milorad D. Antić, Alexandre Kounov, Branislav Trivić, Richard Spikings, Andreas Wetzel (2016)
    General Earth and Planetary Sciences
    ... ets complex During the late Early Cretaceous, the Vlasina Unit was thrust to the east onto the Struma and other Getic units along a system of cast- to north-east-vergent thrusts (Petković 1930; Mihailescu et al. 1967; Petrović 1969; Zagorchev and Ruseva 1982; Lilov and Zagorchev 1993; Kounov ...
    ... Lower Complex Penetrative foliation S, in the area surrounding the Bujano- vac magmatic complex (Figs. 3, 4c) is generally dipping towards the cast to south-east at moderate angles (Fig. 4c). It is commonly defined by biotite, muscovite, and flat- tened quartz-feldspar aggregates. Variation ...
    ... ette) is indicated by a black rectangle in the inset. c Thin section of a C' shear bands observed in gneiss north of Vranje show top-to-the-south-cast direction of tectonic transport (Figs. 5d, 6). C” shear bands, 4-type mantled clasts, and polycrystalline sigmoids observed in the western periphery ...

  • Age and microfacies of oceanic Upper Triassic radiolarite components from the Middle Jurassic ophiolitic mélange in the Zlatibor Mountains (Inner Dinarides, Serbia) and their provenance

    Hans-Juergen Gawlick, Nevenka Đerić, Sigrid Missoni, Nikita Bragin, Milan Sudar, Divna Jovanović (2017)
    Neo-Tethys, trench-like basins, synorogenic deposition, evolving thrust belt, Triassic palaeogeography
    ... obducted ophiolites from the Neo-Tethys to the cast (e.g., Gawlick et al. 2008, 2009b, 2016b; Schmid et al. 2008) or are they relics of an auto- chthonous oceanic realm between the Durmitor mega-unit to the west and the Drina-Ivanjica unit to the cast (e.g., Dimitrijević 1997; Karamata 2006)? For ...
    ... below. The block spectrum of the underlying and slightly older carbonate-clastic mćlange points to a deposition of the sedimentary ophiolitic mćlange cast of or on top of the Drina-Ivanjica unit. Keywords: Neo-Tethys, trench-like basins, synorogenic dcposition, evolving thrust belt, Triassic palaceogeography ...
    ... recycling of sediments. J. Sediment. Petrol. 37, 1031—1044. Blome C.D. 1983: Upper Triassic Capnuchosphaeridac and Capno- docinae (Radiolaria) from “cast-central Oregon. Micro- paleontology 29, 11—49. Blome C.D. 1984: Upper Triassic radiolaria and radiolarian zonation from Western North America ...

  • Demise of the Wetterstein Carbonate Platform and onset of the Dachstein Carbonate Platform recorded in deep-water successions of the East Bosnian-Durmitor megaunit (Pliješevina, northern Montenegro, Dinarides)

    Milica Mrdak, Eva Wagerer, Milan Sudar, Nevenka Djerić, Martin Đaković, Hans-Jürgen Gawlick (2024)
    Triassic, Carnica event, clay mineralogy, conodont biostratigraphy, Neo-Tethys

  • Razvoj integralnog modela za optimizaciju diskontinualnog sistema proizvodnje na površinskim kopovima nemetala

    Miodrag Čelebić (2024)
    Izbor optimalne mehanizacije u diskontinualnom sistemu transporta je jedna od najvažnijih odluka koju treba donijeti prilikom projektovanja površinskih kopova. Pri izboru optimalne mehanizacije, uticaj ima veliki broj faktora, kako prirodnih – geoloških i ekoloških, tako i tehničkih, ekonomskih i socijanih. Neki od njih se mogu izraziti numerički, u određenim mijernim jedinicama, a neki opisno, lingvističkim varijablama, shodno uslovima koji vladaju na rudnim ležištima, a koje karakterišu visok stepen neizvjesnosti i neodređenosti kako prilikom istraživanja, tako i tokom procesa eksploatacije ...
    izbor mehanizacije, tehnologija eksploatacije, diskontinualani sistem, ekspertsko odlučivanje, lingvističke varijable, MCDM, FAHP

  • INVENTS: A Hybrid Mine Ventilation Planning and Design System

    Lilić Nikola, Stanković Ranka, Obradović Ivan (2013)
    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 ...
    hybrid systems, mine ventilation, expert systems
    ... Измењено: 2023-10-14 03:23:37 INVENTS: A Hybrid Mine Ventilation Planning and Design System Lilić Nikola, Stanković Ranka, Obradović Ivan Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] INVENTS: A Hybrid Mine Ventilation Planning and Design System | Lilić Nikola ...
    ... expert knowledge in the mine ventilation field. In this paper we present the design methodology of the hybrid system INVENTS, as well as system structure and user interface. Keywords: hybrid systems, mine ventilation, expert systems 1. Introduction The methodology of mine ventilation planing and ...
    ... and design in contemporary mine theory and practice differs substantially from the traditional approach. The novel approach uses all possibilities offered by computer hardware and software that are at the disposition of mine engineers. Software packages for mine ventilation simulation obtained a key ...