Претрага

Упит dcterms_subject_txt:Geotechnical Engineering and Engineering Geology

2405 items

  • 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 ...
    Fuzzy theory, hydraulic excavator, selection, quality of service, asset management

  • Reducing environmental impact caused by mining activities in limestone mines

    Radmila Gaćina, Bojan Dimitrijević (2022)
    Mining and its related activities have always resulted in changes in the environment and these changes can vary from one area to another. As a result of mining, several types of changes can be distinguished: destruction of land and existing vegetation, changes in terrain topography, modification in air quality, changes in surface and groundwater quality, as well as change geotechnical conditions of the rock. Environmental impact of mining have been a public concern. There is widespread global interest in mining ...
    uticaj na životnu sredinu, rudarstvo, degradirana područja, održivost, rekultivacija

  • 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)
    ... Serbian] KESSLER, H. et alii. Unlocking the potential of digital 3D geological subsurface models for geotechnical engineers. In: EUROPEAN ECONFERENCE OF THE INTERNATIONAL ASSOCIATION FOR ENGINEERING GEOLOGY, 2008. E420-17 REM: R. Esc. Minas, Ouro Preto, 68(3), 323-330, jul. sep. | 2015330 Mine surveying ...
    ... Thamer Rayes Diyab Dr.Lecturer University of Babylon College of Engineering Faculty of Environment Engineering Babylon - Iraq tdiyab@ymail.com Rade Tokalic Associate professor University of Belgrade Faculty of Mining and Geology Mining Department Belgrade – Serbia rade.tokalic@rgf.bg.ac.rs ...
    ... Associate professor University of Belgrade Faculty of Mining and Geology Mining Department Belgrade - Serbia aleksandar.milutinovic@rgf.bg.ac.rs Aleksandar Ganic Full professor University of Belgrade Faculty of Mining and Geology Mining Department Belgrade – Serbia aleksandar.ganic@rgf.bg ...

  • Different aspects of soft computing methods application for blasting in mining

    Katarina Urošević, Jelena Zakonović, Radmila Gaćina (2019)
    Mining is a global industry that is of great importance for every product which is used by human. For mining, process efficiency, reducing production downtime, increasing profitability are all very important. Soft computing tehnologies (SC) are helping in the process of transforming the mining industry into a safer and more environmental friendly industry, but keeping in mind the financial aspect as well. In this paper some of fields of blasting activities in which the SC methods have been applicated, ...
    soft computing, blasting, fuzzy logic, neural networks

  • Application of Membrane Technology for Separation CO2 from Natural Gas

    Lola Tomić, Dušan Danilović, Vesna Karović Maričić, Branko Leković, Miroslav Crnogorac (2020)
    Natural gas consists of a mixture of hydrocarbons with the largest share of methane, and non-hydrocarbon impure components such as N2, CO2 and H2S. In order to fulfill the gas market requirements, it is necessary to separate these unwanted components from the natural gas stream. There are several available technologies for the separation of CO2 from natural gas, such as: polymeric membranes, cryogenic distillation, absorption and adsorption. In this paper is presented the mechanism of CO2 separation using membrane technology, ...
    separacija CO2, polimerne membrane, membranski moduli

  • Subsurface dams as a solution for supplementary recharge and groundwater storage in karst aquifers in arid areas

    Stevanović Zoran (2014)

  • Underground loading-haulage equipment selection with application of topsis method with different weighting methods of criteria

    Vladimir Krivošić, Luka Crnogorac, Rade Tokalić (2024)
    The choice of adequate mining machines is one of the most complex problems in the underground exploitation of mineral raw materials. The weight of such a decision is reflected in the high prices of these machines and the occurrence of even greater costs during their use if their choice was wrongly conceived. There are numerous examples from practice in which such decisions were made solely on the basis of comparing the prices of machines, without considering any of the ...
    utovarno-transportna mehanizacija, izbor, TOPSIS, entropija, standardna devijacija, težina kriterijuma

  • Application of the PROMETHEE and VIKOR methods for selecting the most suitable carbon dioxide geological storage option

    Lola Tomić, Vesna Karović Maričić, Dušan Danilović, Branko Leković, Miroslav Crnogorac (2019)
    CO2 storage in geological formations is one of the leading solutions for mitigation of greenhouse gas emissions. Types of geological formations that can be used for CO2 storage, that are discussed in this paper are: depleted oil and gas reservoirs, saline aquifers and injection CO2 in partially depleted oil reservoirs for enhanced oil recovery (EOR–CO2 method). In order to select the most suitable geological storage of CO2, the ranking of these storage options was performed using two methods of ...
    Prometej, vikor, višekriterijumsko odlučivanje, geološko skladištenje

  • Optimization and Analysis of Drilling and Blasting Parameters Using O-Pitblast Software

    Stefan Milanović, Nikola Simić, Lazar Kričak, Milanka Negovanović, Nikola Đokić (2024)
    The development of modern technologies has enabled the application of specialized softwares in the field of mining through various segments and processes, including in works related to drilling and blasting. The application of specialized software for drilling and blasting with the use of modern technologies such as photogrammetry enabled more accurate data from the field for later processing. By processing data and creating a 3D model of the terrain for drilling and blasting works, it can obtain precise data, ...
    optimizacija, 3D model, bušenje, miniranje, O-Pitblast, softver

  • 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
    ... Ivan Jankovic 3 and Tomislav Subaranovic 1 1 Faculty of Mining and Geology, University of Belgrade, 11000 Belgrade, Serbia; dragan.ignjatovic@rgf.bg.ac.rs (D.I.); milos.tanasijevic@rgf.bg.ac.rs (M.T.); tomislav.subaranovic@rgf.bg.ac.rs (T.S.) 2 Faculty of Mechanical Engineering, University of Belgrade ...
    ... Ivan Jankovic > and Tomislav Subaranovic ! 1 Faculty of Mining and Geology, University of Belgrade, 11000 Belgrade, Serbia; dragan.ignjatovic@rgf.bg.ac.rs (D.1.); milos.tanasijevic@rgf.bg.ac.rs (M.T.); tomislav.subaranovic@rgf.bg.ac.rs (T.S.) Faculty of Mechanical Engineering, University of Belgrade ...
    ... of the engineering system, their independent analysis, and ranking, and finally gives the possibility of composition. Structural definitions of each outcome are given in accordance with the work environment. The result has two dimensions, one is the linguistic description of availability and the other ...

  • Parameter determination of soil oscillation law using quotient of the relative growth increments of oscillation velocity and reduced distances at “Nepričava“ open pit mine

    Suzana Lutovac, Sanja Bajić, Marina Ravilić, Radmila Gaćina (2015)
    ... 1 University of Belgrade – Faculty of Minig and Geology, Đušina 7, 11000 Belgrade, Serbia, e-mails: suzana.lutovac@rgf.bg.ac.rs; sanjabajic@sezampro.com; radmila.gacina@rgf.rs; marina.ravilic@gmail.com UNDERGROUND MINING ENGINEERING 26 (2015) 9-19 ...
    ... fakultet Univerziteta u Beogradu. 9 TRAJKOVIĆ, S., LUTOVAC, S. and RAVILIĆ, M. (2013) Assessment of impact on environment and constructed facilities owing to blasting at open pit mine "Nepričava". Underground Mining Engineering, 22, pp. 33-48. 10 VUKADINOVIĆ, S. (1970) Elementi računa verovatnoće ...
    ... the rock mass. ACKNOWLEDGEMENT This paper has resulted from the Project No.33025 and No.33029 financed by the Ministry of Education of the Republic of Serbia realized by the Faculty of Mining and Geology in Belgrade. Parameter determination of soil oscillation law ... ...

  • Coupling of artificial intelligence methods in the development of hybrid intelligent systems

    Ranka Stanković, Ivan Obradović, Nikola Lilić (2001)
    In this paper we present an approach which couples various artificial intelligence (AI) methods in the solution of complex problems that cannot adequately be solved by a single AI method. We argue that the resulting, hybrid intelligent systems (HIS) can be successfully implemented with the use of available AI software libraries. Different coupling methods are analyzed and a classification of hybrid systems based on the chosen method is given. Two case studies of hybrid systems used in mining engineering ...
    hibridni inteligentni sistemi, spregnuti sistemi, metode veštačke inteligencije, rudarske primene veštačke inteligencije
    ... methods are analyzed and a classification of hybrid systems based on the chosen method is given. Two case studies of hybrid systems used in mining engineering are presented: a system for planing and analysis of mine ventilation, as an example of intercommunicating hybrid systems, and a system for the ...
    ... AI methods and conventional computer systems, such as database or spreadsheet applications. In this paper we present two hybrid intelligent systems which couple expert systems, neural networks and genetic algorithms in order to solve some complex problems in the area of mining engineering. In the ...
    ... with different processes using different media. 3. A hybrid system for mine ventilation planing and analysis Ventilation planing and analysis is one of the most complex problems in mining engineering. We approached it by decomposing the global problem into several tasks, each of them solvable by ...

  • Fuzzy Model for Risk Assessment of Machinery Failures

    Dejan V. Petrović, Miloš Tanasijević, Saša Stojadinović, Jelena Ivaz, Pavle Stojković (2020)
    The main goal of this research was the development of an algorithm for the implementation of negative risk parameters in a synthesis model for a risk level assessment for a specific machine used in the mining industry. Fuzzy sets and fuzzy logic theory, in combination with statistical methods, were applied to analyze the time picture state of the observed machine. Fuzzy logic is presented through fuzzy proposition and a fuzzy composition module. Using these tools, the symmetric position of the ...
    fazi teorija, rizik, otkaz rudarskih mašina
    ... weak points, and failure modes, i.e., finding critical points in the system and establishing the risk level of failure of a single part or the entire engineering system. The measures taken to reduce the risk of critical parts also depend on this. Risk management should consider and study risk from ...
    ... fuzzy Markov chains, and fuzzy Petri nets. Similar analyses have been presented by Liu et al. [22]. Their review showed the potential applicability of fuzzy set theory in addressing uncertainty in safety and reliability engineering. The numerous possibilities for applying fuzzy sets and fuzzy logic theory ...
    ... substances present in the air, soil, and water. The shape of the fuzzy set can be ascertained using the minimal and maximal recorded values and Maximum Permissible Concentrations (MPCs) of harmful substances. Workplace injuries resulting from the failure of an engineering system or individual components ...

  • Development of integrated fuzzy model for mine management optimization

    Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)
    fuzzy logika, višekriterijumsko odlučivanje, ocenjivanje eksperata
    ... modern approach to investigations in the field of geoscience and mine management was presented in the paper. The selection and design of a mining: technology is one of the most complex tasks in mining: engineering. Decision making. requires the best possible knowledge about all the influencing, parameters ...
    ... applied o a real case study, bauxite deposit L-29C of the Bešpelj mine near Jajce in the Republic of Serbia, Bosnia and Herzegovina, which is the focus of the paper. Study area and geology. The Bešpelj bauxite mine is located on a spacious karst plateau, on the right bank of the Vrbas River. It is at ...
    ... detailed descriptions of the application of the methodology in geology and mining; are available in [7, 10]. At the beginning, crite- ria matrices are created relative to alternative solutions, using a fuzzified scale of relative importance and triangular fuzzy numbers [3,5,11]4 Element identification ...

  • Life Cycle Assessment of Individual Wood Biomass Heating Systems in Households

    Boban Pavlović, Dejan Ivezić, Marija Živković (2020)
    The use of solid fuels (wood biomass and coal) for heating of households continues to be common practice within European countries. Solid fuel combustion in households contributes more than 46% to total emissions of fine particulate matter. In this study, a life-cycle assessment (LCA) of firewood-based and pellet-based heating systems is performed. These two systems represent two different types of individual wood biomass heating systems. In the case of the firewood-based heating systems, it is analyzed a typical stove ...
    Grejanje, Analiza životnog ciklusa, Drvna biomasa, Individualni sistemi grejanja
    ... Faculty of Mining and Geology, Belgrade, Serbia, marija.zivkovic@rgf.bg.ac.rs Life Cycle Assessment of Individual wood Biomass Heating Systems in Households 429 Solid heating fuels consist primarily of wood and coal but can also include forestry and agricultural residues and even municipal solid ...
    ... Assistant, M.Sc., Boban Pavlović, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia, boban.pavlovic@rgf.bg.ac.rs 2 Full Time Professor, Ph.D., Dejan Ivezić, University of Belgrade, Faculty of Mining and Geology, Belgrade, Serbia, dejan.ivezic@rgf.bg.ac.rs 3 Associate Professor, Ph ...
    ... Systems in Households | Boban Pavlović, Dejan Ivezić, Marija Živković | 5th International Scientific Conference ”Conference on Mechanical Engineering Technologies and Applications” COMETa2020, East Sarajevo, 2020 | 2020 | | http://dr.rgf.bg.ac.rs/s/repo/item/0005065 Дигитални репозиторијум Рударско-геолошког ...

  • Hydraulic impact of pressure transients from water conveyance tunnel on the complex hydrogeological system: A case study HPP

    Igor Jemcov, Maja Todorović, Aleksandar Jemcov, Marina Ćuk Đurović (2024)
    Tunel pod pritiskom, Unutrašnji pijezometri, Tranzijenti pritiska, Karstna izdan, Pukotinska izdan, Hidraulički odziv
    ... la Linea Tunnel project Colombia. Appl Geochem (2018) C.B. Zhou et ol. Groundwater flow through fractured rocks and seepage control in geotechnical engineering: rheories and practices JRMGE (2023) B.Q. Zhou et aL Assessing the impact of tunnelling on karst groundwater balance by using ...
    ... la Linea Tunnel project Colombia. Appl Geochem (2018) C.B. Zhou et ol. Groundwater flow through fractured rocks and seepage control in geotechnical engineering: theories and practices JRMGE [2023} B.Q. Zhou et aL Assessing the impact of tunnelling on karst groundwater balance by using ...
    ... complex void system, that affects the hydraulic properties of fractured rocks. These properties can change due to engineering activities during construction and operation in many engineering practices (Zhou et al., 2023). According to their construction, tunnels can be either unlined or lined. The type ...

  • Shear strength properties of Dimitrovgrad flysch, Southeastern Serbia

    Berisavljević Zoran, Berisavljević Dušan, Čebašek Vladimir (2014)

  • Classifying large strains from digital imagery: application to analogue models of lithosphere deformation

    Taco Broerse, Nemanja Krstekanić, Cor Kasbergen, Ernst Willingshofer (2021)
    ... Kasbergen3, and Ernst Willingshofer1 1Utrecht University, Faculty of Geosciences, Department of Earth Sciences, Utrecht, Netherlands (d.b.t.broerse@uu.nl) 2Department of Regional Geology, Faculty of Mining and Geology, University of Belgrade, Belgrade, Serbia 3Faculty of Civil Engineering and Geosciences ...
    ... слободном 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 ...
    ... faults, and broader zones of deformation. We use Particle Image Velocimetry(PIV) to derive incremental displacements from top-view images that we use in subsequent stepsto calculate the shape changes that come with large deformation. Because PIV describesdisplacement in a spatial reference, and material ...

  • Proposition of a Landslide Monitoring System in Czech Carpathians

    Marjanović Miloš, Caha Jan, Mirijovsky Jakub (2014)

  • GIS application for landfill site selection: a case study in Pancevo, Serbia

    Đokanović Sonja, Abolmasov Biljana, Jevremović Dragutin (2016)