Претрага

Упит dcterms_subject_txt:Economic Geology

1074 items

  • The shear strength evaluation of rough and infilled joints and its indications for stability of rock cutting in schist rock mass

    Dušan Berisavljević, Zoran Berisavljević, Svetlana Melentijević (2022)
    Construction of E75 highway section through Grdelica gorge was one of the most demanding projects realized in recent Serbian history. The alignment approximately 25 km long consists of several tens of bridges, two tunnels, three galleries and cuts with total length of 6 km. The alignment passes through highly anisotropic Palaeozoic schist rock formation of different weathering grades. This study focuses on shear strength properties of discontinuities, which are found to be the critical feature contributing to the occurrence ...
    Diskontinuitet, nelinearni kriterijum loma, anizotropija, hiperbolična anvelopa

  • Building learning capacity by blending different sources of knowledge

    Ivan Obradović, Ranka Stanković, Olivera Kitanović, Dalibor Vorkapić (2016)
    ... приступу. - Претрага репозиторијума доступна је 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 ...
    ... by blending different sources of knowledge Ivan Obradović*, Ranka Stanković, Olivera Kitanović and Dalibor Vorkapić Faculty of Mining and Geology University of Belgrade Đušina 7, 11000 Belgrade, Serbia E-mail: ivan.obradovic@rgf.bg.ac.rs E-mail: ranka.stankovic@rgf.bg.ac.rs E-mail: ...
    ... learning Biographical notes: Ivan Obradović is a professor of mathematics and informatics at the University of Belgrade Faculty of Mining and Geology and director of the University of Belgrade Center for e-learning and distance education. He has published four books and more than 130 scientific ...

  • Flood protection and water utilization of karst poljes: example of Gatačko Polje, Eastern Herzegovina

    Tina Dašić, Ljiljana Vasić (2020)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry,Global and Planetary Change

  • Coal homogenization stockyard sizing “Tamnava – Zapad” case study

    Božo Kolonja, Dinko Knežević, Ranka Stanković, Dejan Stevanović, Detlef Trummer (2016)
    ... International Journal of Coal Geology, 112, pp.141-153. 2. Beretta, F.S., Costa, J.F.C.L. and Koppe, J.C., 2010. Reducing coal quality attributes variability using properly designed blending piles helped by geostatistical simulation. International Journal of Coal Geology, 84(2), pp.83-93. 3. Ignjatović ...
    ... приступу. - Претрага репозиторијума доступна је 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 ...
    ... “TAMNAVA – ZAPAD” CASE STUDY Kolonja Božo1, Knežević Dinko1, Trummer Detlef2, Stanković Ranka2 1University of Belgrade, Faculty of mining and geology, Đusina 7, 11 000 Belgrade, Serbia 2MIBRAG Consulting International GmbH, Glück-Auf-Straße 1, D-06711 Zeitz, Germany ABSTRACT Coal homogenization ...

  • A business intelligence approach to mine safety management

    Ljiljana Kolonja, Ranka Stanković, Ivan Obradović, Olivera Kitanović, Dejan Stevanović, Marija Radojičić (2016)
    ... приступу. - Претрага репозиторијума доступна је 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 ...
    ... Ranka Stanković1, Ivan Obradović1, Olivera Kitanović1, Dejan Stevanović1, Marija Radojičić1 1 University of Belgrade, Faculty of Mining and Geology, Serbia, ljiljana.kolonja@rgf.bg.ac.rs 1 ranka.stankovic@rgf.bg.ac.rs; ivan.obradovic@rgf.bg.ac.rs; olivera.kitanovic@rgf.bg.ac.rs; dejan.stevanovic@rgf ...
    ... phone: +381 11 3219 288 Abstract: In this paper we give an outline of the approach taken by the University of Belgrade Faculty of Mining and Geology research team in the development of a business intelligence system for accident analysis in mines. Mining engineering, as all other engineering ...

  • Mine ventilation system planning using genetic algorithms

    Nikola Lilić, Ranka Stanković, Ivan Obradović (1997)
    The most common problem in contemporary mining practice related to the planning and analysis of ventilation systems is the optimization of partially regulated air distribution in mine ventilation networks. This paper presents a two step optimization procedure for partly regulated air distribution in mine ventilation networks. The first step is the determination of air distribution in all branches using the well known Hardy-Cross method. In the second step the distribution and parameters of air flow regulators with minimum engaged ...
    coal, lignite, and peat; ventilation systems; coal mining; underground mining; ventilation; mathematical models; design; air flow; optimization; calculation methods

  • VENTEX: An Expert System for Mine Ventilation Systems Analysis

    Ranka Stanković, Nikola Lilić, Ivan Obradović (1996)
    Analiza sistema za ventilaciju je komleksan proces, koji bazira na proračunu brojnih parametara, koji se odnose na: stanje mreže, provetrenost, stabilnost sistema, gubitke vazduha, klimatske uslove, gasno stanje, ugroženost od požara i opasne prašine. Navedeni problemi se uspešno rešavaju paketom SimVent, ali potpuno razumevanje i korišćenje dobijenih rezultata zahteva angažovanje iskusnog specijaliste iz oblasti ventilacije. Rešenje je nađeno u kreiranju ekspertnog sistema VENTEX, čija je baza znanja formalizacija ekspertskog znanja iz oblasti ventilacije rudnika. U radu je prikazana metodologija ...
    ekspertni sistem, ventilacija
    ... приступу. - Претрага репозиторијума доступна је 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 ...
    ... appropriate software products. One of them is the software package SimVent for mine ventilation simulation developed at the Faculty of Mining and Geology of the University of Belgrade (Lilić, Stanković, and Obradović, 1994). This package, which enables the simulation of air flow distribution in ...
    ... features of VENTEX, an expert system for the analysis and evaluation of the general mine ventilation state, developed at the Faculty of Mining and Geology of the University of Belgrade. VENTEX was developed by upgrading the existing numerical package SimVent with declarative knowledge representing ...

  • Mineral and Thermal Waters of Serbia: Multivariate Statistical Approach to Hydrochemical Characterization

    Maja Todorović, Jana Štrbački, Marina Ćuk, Jakov Andrijašević, Jovana Šišović, Petar Papić (2016)

  • Extensive vibrations of the belt conveyer drive electromotor of a bucket wheel excavator as a result of intesified wear-and-tear of its mount support

    Vesna Damnjanović, Predrag Jovančić, Snežana Aleksandrović (2017)

  • Frequency and Length of Syllables in Serbian

    Marija Radojičić, Biljana Lazić, Sebastijan Kaplar, Ranka Stanković, Ivan Obradović, Ján Mačutek, Lívia Leššová (2019)
    Basic analyses of several properties of syllables (the rank-frequency distribution, the distribution of length, and the relation between length and frequency) in Serbian is presented. The syllabification algorithm used combines the maximum onset principle and the sonority hierarchy. Results indicate that syllables behave similarly to words as far as mathematical models are concerned, but values of parameters in models for syllables are quite different from those for words.
    frekvencije slogova, dužina slogova, srpski jezik
    ... Sad, Trg Dositeja Obradovića 6, 21101 Novi Sad, Serbia, and Faculty of Mining and Geology, University of Belgrade, Đušina 7, 11120 Beograd, Serbia e-mail: marija.radojicic@uns.ac.rs 2 Faculty of Mining and Geology, University of Belgrade, Đušina 7, 11120 Beograd, Serbia e-mail: biljana.lazic@rgf ...
    ... Dositeja Obradovića 6, 21101 Novi Sad, Serbia e-mail: kaplar@uns.ac.rs 4 Faculty of Mining and Geology, University of Belgrade, Đušina 7, 11120 Beograd, Serbia e-mail: ranka@rgf.rs 5 Faculty of Mining and Geology, University of Belgrade, Đušina 7, 11120 Beograd, Serbia e-mail: ivan.obradovic@ rgf.bg.ac ...
    ... приступу. - Претрага репозиторијума доступна је 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 ...

  • Clockwise vertical-axis rotation in the West Vardar zone of Serbia: Tectonic implications

    Vesna Lesić, Emo Márton, Violeta Gajić, Dragana Jovanović, Vesna Cvetkov (2018)
    The Vardar-Tethyan mega-suture between the Eurasian and Adria (Gondwana) margins comprises remnants of oceanic lithosphere of Neotethys and distal parts of the adjacent continental margins including unconformable Late Cretaceous sedimentary cover and Cenozoic igneous rocks of post-obduction age. This study provides kinematic constraints for displacements and rotations affecting the Serbian part of the West Vardar and Jadar-Kopaonik units after the closure of the Neotethyan (= Sava) Ocean. The targets of the paleomagnetic research were Late Cretaceous sediments representing an ...
    Paleomagnetism, Clockwise rotation, Dinarides, West Vardar zone
    ... Department of Mineralogy, Crystallography, Petrology and Geochemistry, Faculty of Mining and Geology, University of Belgrade, Djušina 7, Belgrade 11000, Serbia 4 Department of Geophysics, Faculty of Mining and Geology, University of Belgrade, Djušina 7, Belgrade 11000, Serbia Swiss Journal of Geosciences ...
    ... University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia, 108 pp. (in Serbian). Gajić, V. (2014). Sedimentology of Upper Cretaceous of the central part of the Vardar zone. Ph.D. dissertation, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia, 265 pp. (in Serbian) ...
    ... приступу. - Претрага репозиторијума доступна је 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 ...

  • 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

    Filip Arnaut, Dragana Đurić, Uroš Đurić, Mileva Samardžić-Petrović, Igor Peshevski (2024)
    General Earth and Planetary Sciences
    ... Float Feature / Total intensity of the EMF RTP Geophysics Float Feature / reduced to the pole Distance to fault map DF Geology Float Feature / Ophiolite map Ophiolites Geology Categorical Target / @ Springer 1632 abbreviations i.e., symbols, data groupings, and data types employed throughout ...
    ... приступу. - Претрага репозиторијума доступна је 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 ...
    ... University of Belgrade, Institute of Physics Belgrade, Pregrevica 118, 11080 Belgrade, Serbia ~ University of Belgrade, Faculty of Mining and Geology, Đušina 7, 11000 Belgrade, Serbia University of Belgrade, Faculty of Civil Engineering, Bulevar Kralja Aleksandra 73/1, 11000 Belgrade, Serbia ...

  • 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
    ... LILIĆ, Nikola 1 , STANKOVIĆ, Ranka 2 & OBRADOVIĆ, Ivan 3 1, 3 Professor, Faculty of Mining and Geology, University of Belgrade, Djusina 7, 11.000 Belgrade 2 Bsc, Faculty of Mining and Geology, University of Belgrade, Djusina 7, 11.000 Belgrade Abstract: Ventilation system analysis is a complex ...
    ... приступу. - Претрага репозиторијума доступна је 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 ...

  • Optimisation of underground mine decline development system using genetic algorithm

    Zoran Gligorić, Aleksandar Ganić, Rade Tokalić, Aleksandar Milutinović (2014)
    ... приступу. - Претрага репозиторијума доступна је 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 ...
    ... otvaranje niskopom, optimizacija, genetski algoritam 1 University of Belgrade – Faculty of Mining and Geology, Đušina 7, 11000 Belgrade, Serbia, e-mails: zoran.gligoric@rgf.bg.ac.rs; aleksandar.ganic@rgf.bg.ac.rs; rade.tokalic@rgf.bg.ac.rs; ...
    ... 33-40 UDK 62 UNIVERSITY OF BELGRADE - FACULTY OF MINING AND GEOLOGY YU ISSN 03542904 34 Gligorić ...

  • Influence of DEM resolution on numerical modelling of debris flows in RAMMS - Selanac case study

    Jelka Krušić, Biljana Abolmasov, Mileva Samardžić Petrović (2019)
    Debris flows induced by intensive rainfall represent very hazardous phenomena in many parts of the World. Methods for prediction of runout distance of flow like mass movements are different and depending on the input data, rheology, and available or appropriate numerical solution. However, sometimes it is not easy to obtain pre event and post event high-resolution data in the rural or mountainous area. Thus, the topology of terrain is the most important input parameter for the every real case ...
    tecišta, modeliranje, RAMMS, DEM
    ... приступу. - Претрага репозиторијума доступна је 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 ...
    ... Selanac case study Jelka Krušić(1) , Biljana Abolmasov (1) , Mileva Samardžić-Petrović(2) 1) University of Belgrade, Faculty of Mining and Geology, Belgrade, Đušina 7, +381 11 3219225 2) University of Belgrade, Faculty of Civil Engineering, Belgrade, Bul. Kralja Aleksandra 73, +381 11 3218538 ...
    ... Sosio R, Crosta GB, Hungr O (2008) Complete dynamic modeling calibration for the Thurwieser rock avalanche (Italian Central Alps). Engineering Geology 100 (1-2): 11-26. Takahashi T (2007) Debris Flow: Mechanics, Prediction and Countermeasures. Annual Review of Fluid Mechanics 13 (1): 57- 77. ...

  • INVENTS: a hybrid system for subsurface ventilation analysis

    Nikola Lilić, Ranka Stanković, Ivan Obradović (2000)
    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 ...
    ... LILIĆ, Nikola 1 , STANKOVIĆ, Ranka 2 & OBRADOVIĆ, Ivan 3 1, 3 Professor, Faculty of Mining and Geology, University of Belgrade, Djusina 7, 11.000 Belgrade 2 Bsc, Faculty of Mining and Geology, University of Belgrade, Djusina 7, 11.000 Belgrade Abstract: Ventilation system analysis is a complex ...
    ... приступу. - Претрага репозиторијума доступна је 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 ...

  • Пројекат ПРИЗМА: Карактеризација и технолошки поступци за рециклажу и поновну употребу флотацијске јаловине рудника „Рудник“

    Владимир Симић, Стефан Петровић, Филип Арнаут, Весна Цветков, Милена Костовић, Драган Радуловић, Јовица Стојановић, Владимир Јовановић, Дејан Тодоровић, Нина Николић, Јелена Сенћански, Грозданка Богдановић, Драгана Мариловић (2024)
    Prizma, REASONING, Rudnik, jalovina, Fond za nauku Republike Srbije

  • Determination of the groundwater-leakage mechanism (binary mixing) in a karstic dam site using thermometry and isotope approach (HPP Visegrad, Bosnia, and Herzegovina)

    Ljiljana Vasić, Saša Milanović, Anita Puskás-Preszner, Laszlo Palcsu (2020)
    Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary Change

  • Valorization of non-balanced coal reserves in Serbia for underground coal gasification

    David Petrović, Lazar Kričak, Milanka Negovanović, Stefan Milanović, Jovan Marković, Nikola Simić, Ljubisav Stamenić (2019)
    In the name of a better and safer energy future, it is our responsibility to focus our knowledge and activities to save on imported liquid and gas fossil fuels, as well as coal on which energy security of Serbia is based. The rationalization in the use of available energy resources certainly positively affects economy and the environment of a country. This paper indicates motivations for the application of the underground coal gasification process, as well as surface gasification for ...
    ugalj, gasifikacija, zaštita životne sredine, skladištenje, solarna
    ... equipment, as well as conveyer or tube transportation systems for slag and ash to landfills. Considering these benefits indicates how significant economic effects of the UCG application are. In parallel, environmental benefits are also exceptional. Utilization of UCG method does not generate any ...
    ... materials. The competitiveness of these products is changing with the cost of technology, or the level of development of this technology. Today's economic, energy and environmental effects have highlighted outstanding, interests for the future of clean and renewable energy resources. While the world ...
    ... Serbia for ... THERMAL SCIENCE: Year 2019, Vol. 23, No. 6B, pp. 4067-4081 4079 — deep disposal of particularly harmful products for which the economic justification of their purification or liquidation is determined, and — establishment of protective zones in the area of existence of groundwater ...

  • 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