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1394 items
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Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention
Gas wells, particularly those situated onshore, play a vital role in the global energy sector by supplying a significant portion of natural gas. However, operational challenges, notably gas hydrate formation, pose substantial issues, leading to complications such as flowline blockages and unexpected well shutdowns. Gas hydrates, crystalline structures resembling ice, ...Gas Well, Gas Hydrate Formation, Well Modeling, Well Performance Optimization, Choke Position Adjustments, Methanol InjectionMilica Ješić, Bojan Martinović, Stefan Stančić, Miroslav Crnogorac, Dušan Danilović. "Mitigating hydrate formation in onshore gas wells: A case study on optimization techniques and prevention" in Underground Mining Engineering, Beograd : Rudarsko-geološki fakultet (2023)
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Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling
Earth-Surface Processes,Geology, Pollution, Soil Science, Water Science and Technology, Environmental Chemistry, Global and Planetary ChangeBranislav Petrović, Veljko Marinović, Zoran Stevanović. "Characterization of the eastern Suva Planina Mt. karst aquifer (SE Serbia) by time series analysis and stochastic modelling" in Environmental Earth Sciences, Springer Science and Business Media LLC (2023). https://doi.org/10.1007/s12665-023-10911-5
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Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic
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 композицијаMiljan Gomilanović, Miloš Tanasijević, Saša Stepanović. "Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic" in Energies, MDPI AG (2022). https://doi.org/10.3390/en15186786
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Development of integrated fuzzy model for mine management optimization
Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić (2023)... analyzed and evaluated using, a scale of relative importance. On the other hand, mathematical optimization calculations are performed apply- ing the fuzzy analytic hierarchy process FAHP [3 r)] to select the optimal mining; echnology. The great advantage of fuzzy logic and heuristic methods need ...
... efficient mining: as well as higher productivity and market competitiveness. OConclusion. A 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 ...
... where tectonic transport was most distinct, and found to be rather unfavourable. The most adverse area for underground mining: operations is the zone of contact between the overlying: and underlying, limestones, and especially within the ore deposit and its immediate environment. Experience indicates ...Miodrag Čelebić, Sanja Bajić, Dragoljub Bajić, Dejan Stevanović, Duško Torbica, Vladimir Malbašić. "Development of integrated fuzzy model for mine management optimization" in Comptes rendus de l'Académie Bulgare des Sciences (2023)
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An intelligent hybrid system for surface coal mine safety analysis
Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić. "An intelligent hybrid system for surface coal mine safety analysis" in Engineering Applications of Artificial Intelligence (2010)
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Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining
Ivan Janković, Stevan Đenadić , Dragan Ignjatović , Predrag Jovančić , Tomislav Šubaranović, Ivica Ristović (2019)... dozers; coal mining; open-cast mining 1. Introduction The process of ore exploitation in open-cast coal mining is complex and demands hiring many people and providing varied equipment. In order to provide continuous (twenty-four hours a day) production and to excavate the planned amount of ore and overburden ...
... dozers; coal mining; open-cast mining 1. Introduction The process of ore exploitation in open-cast coal mining is complex and demands hiring many people and providing varied equipment. In order to provide continuous (twenty-four hours a day) production and to excavate the planned amount of ore and overburden ...
... response mode and importance on decision-making strategies: Judgment versus choice. Organ. Behav. Hum. Decis. Process. 1998, 41, 1–19. [CrossRef] 2. Keen, P. Decision support systems: The next decade. Decis. Support Syst. 1987, 3, 253–265. [CrossRef] 3. Saaty, T.L.; Vargas, L.G. Models, Methods, Concepts ...Ivan Janković, Stevan Đenadić , Dragan Ignjatović , Predrag Jovančić , Tomislav Šubaranović, Ivica Ristović . "Multi-Criteria Approach for Selecting Optimal Dozer Type in Open-Cast Coal Mining" in Energies, MDPI (2019). https://doi.org/https://doi.org/10.3390/en12122245
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Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes
... information and communication technologies, based on advances mathematical methods, with applications in medicine, telecommunications, power systems, protection of natural heritage and education” (III 44006) and “Research and development of energy efficient and environment friendly polygeneration systems based ...
... definition of activities, and representation of the logical structure. Application of the Critical Path Method (CPM) and precisely defined activity durations allow the creation of project management models with adjustments to the mining and energy complex environmental protection systems in accordance with ...
... complexes; environment; sustainable development; network planning 1. Introduction Mining and energy complexes represent significant sources of air, water, and soil pollution, through technological processes from coal excavation to ash disposal. The consequences for environmental quality are related to ...Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović . "Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes" in Energies (2016). https://doi.org/https://doi.org/10.3390/en9121071
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Optimisation of underground mine decline development system using genetic algorithm
... constrained optimization problems. International Journal of Advanced Computer Science and Applications, 3 (6), pp.6-12. 2 BRAZIL, M. et al. (2003) Optimising Declines in Underground Mines. Mining Technology. 112 (3), pp.164-170. 3 BRAZIL, M. et al. (2008) Decline design in underground mines using ...
... condition-Maximum number of generations Figure 1 - Locations of the MPF and access points (plan view) The best design solution found by GA application is shown in Figure 2. Design parameters of the underground mine decline development system are represented in Table 2. 1160; 1229 ...
... 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; aleksandar.milutinovic@rgf.bg.ac.rs UNDERGROUND MINING ENGINEERING 25 (2014) 33-40 ...Zoran Gligorić, Aleksandar Ganić, Rade Tokalić, Aleksandar Milutinović. "Optimisation of underground mine decline development system using genetic algorithm" in Underground mining engineering, Beograd : Univerzitet u Beogradu – Rudarsko–geološki fakultet (2014)
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A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor
Miloš Milenković, Miloš Gligorić, Nebojša Bojović, Zoran Gligorić. "A comparison between ARIMA, LSTM, ARIMA-LSTM and SSA for cross-border rail freight traffic forecasting: the case of Alpine-Western Balkan Rail Freight Corridor" in Transportation Planning and Technology, Informa UK Limited (2023). https://doi.org/10.1080/03081060.2023.2245389
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Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining
... the “in situ” working conditions of mining, i.e., cutting. Keywords: cutting resistance; underwater mining; coal 1. Introduction Continuous mining systems, including bucket-wheel excavators (BWE) and bucket- wheel dredges (BWD), have been used in high-volume mining operations for decades. These excavators ...
... the “in situ” working conditions of mining, i.e., cutting. Keywords: cutting resistance; underwater mining; coal 1. Introduction Continuous mining systems, including bucket-wheel excavators (BWE) and bucket- wheel dredges (BWD), have been used in high-volume mining operations for decades. These excavators ...
... cemented pebble stones, and sand 2 20 VIa Relatively soft stones Gravel soil, broken slate, hard fossil coal, hardened clay 1.5 15 VII Soft stone Hard clay, soft fossil coal, clayey soil, hard brown coal 1.0 10 VIIa Soft stone Gritty clay, coarse clay, loess 0.8 - VIII Soils Top soil, peat, loam, sand 0.6 - ...Vladimir Čebašek, Veljko Rupar, Stevan Đenadić, Filip Miletić. "Cutting Resistance Laboratory Testing Methodology for Underwater Coal Mining" in Minerals, MDPI AG (2021). https://doi.org/10.3390/min11060564
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A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)
... addressed hydrogeologic systems of ore deposits, groundwater flow and processes that affect the hydrogeology of mining sites, including: Dimitrakopoulos et al. 2000; Rapantova et al. 2007; Kamkar-Rouhani, 2008; Rühaak et al. 2009; Niedbalska et al. 2011; Wels et al. 2012; Brown and Trott, 2012. ...
... Belgrade - Faculty of mining and geology, pp. 483-487. RAPANTOVA, N. et al. (2007) Ground Water Flow Modelling Applications in Mining Hydrogeology. Mine Water and the Environment, 26 (4), pp. 264-270. RÜHAAK, W., LUO, J. and DIERSCH, H.-J.G. (2009) 3D Modelling of Brine Flow - A Case Study for a ...
... 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 UNDERGROUND MINING ENGINEERING 29 (2016) 43-54 UDK 62 UNIVERSITY OF BELGRADE - FACULTY OF MINING AND GEOLOGY YU ISSN ...Jelena Ratković, Dušan Polomčić, Dragoljub Bajić, Bojan Hajdin. "A hydrogeological model of the open-cast mine Tamnava - West Field (Kolubara Coal Basin, Serbia)" in Underground Mining Engineering no. 29, Belgrade : University of Belgrade - Faculty of mining and geology (2016): 43-54
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Selection of Artificial Lift Methods: A Brief Review and New Model Based on Fuzzy Logic
Miroslav Crnogorac, Miloš Tanasijević, Dušan Danilović, Vesna Karović Maričić, Branko Leković (2020)Artificial lift methods have applications in oil wells where oil production is no longer possible due to natural reservoir energy, so this necessary energy is added by introducing lift methods. In order to achieve optimum production, the selection of an artificial lift method is very important. This paper uses fuzzy logic as a mathematical and conceptual model for selection of the optimal artificial lift method. The outcome or IF-THEN rules, as the central part of the model, is based ...... a conceptual and mathematical tool for modeling different processes dominated by uncertainty, multidimensionality, subjectivity and indeterminacy. Optimization criteria were taken into account during model development in order to achieve an optimal selection of artificial lift methods by fuzzy logic ...
... the selection of artificial lift methods. These are the models created by applying multi-criteria analysis (TOPSIS, ELECTRE, SAW and VIKOR). Based on the known parameters, the expert gives estimates of the input data for the optimization model, and the output is the most suitable artificial lift method ...
... method [11–14]. The analysis of the mathematical and conceptual models indicates that: • there are several input parameters (I, II, III); • for the first and third groups, parameters are measurable and can be displayed numerically; • In the second group, parameters are from different processes dominated ...Miroslav Crnogorac, Miloš Tanasijević, Dušan Danilović, Vesna Karović Maričić, Branko Leković. "Selection of Artificial Lift Methods: A Brief Review and New Model Based on Fuzzy Logic" in Energies, MDPI AG (2020)
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Review: Methodological approaches and research techniques for addressing construction and remediation problems in karst reservoirs
Saša Milanović, Ljiljana Vasić (2021)Saša Milanović, Ljiljana Vasić. "Review: Methodological approaches and research techniques for addressing construction and remediation problems in karst reservoirs" in Hydrogeology Journal, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s10040-020-02280-1
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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)... half of all lignite is mined and utilized in Europe (Knoema, 2020). The extraction and combustion of coal pollutes water, soil, and espe- cially the atmosphere. Air pollution generated by the mining industry has both a local (particulate matter, sulphur and nitrogen oxides) and a global impact (greenhouse ...
... theory and initial broad-scale application. Appl. Soil Ecol. 125, 162–168. https://doi. org/10.1016/j.apsoil.2017.07.035. Hofrichter, M., Fakoussa, R., 2001. Microbial degradation and modification of coal. Lignin, Humic Substances and Coal. Wiley–VCH, pp. 393–427. Höök, M., 2012. Coal coal and peat peat : ...
... 1991. Historical outline of brown coal exploration, examination and mining in Poland and the role of the State Geological Institute. Geol. Q. 35, 207–220. Cole, J.J., Prairie, Y.T., 2014. Dissolved CO2 in freshwater systems? Reference Module in Earth Systems and Environmental Sciences. Elsevier https://doi ...Anna Pytlak, Anna Szafranek-Nakonieczna, Weronika Goraj, Izabela Śnieżyńska, Aleksandra Krążała, Artur Banach, Ivica Ristović, Mirosław Słowakiewicz, Zofia Stępniewska. "A survey of greenhouse gases production in central European lignites" in Science of The Total Environment, Elsevier (2021). https://doi.org/10.1016/j.scitotenv.2021.149551
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Numerical modeling of Selanac debris flow propagation using SPH code
The Selanac debris flow is a very huge event triggered after extreme rainfall caused by Cyclone Tamara activity in the Republic of Serbia in May 2014. The Selanac case study was already modelling in different programs using Voellmy rheology assumptions like RAMMS software. In this paper research are focusing particularly on the process of debris flowing from initiation zone to main deposition area using Geoflow SPH two-phase model considering frictional rheology law. Main rheological parameters are back-calculated using also ...... V. (2008) ‘’Mathematical, constitutive and numerical modelling of catastrophic landslides and related phenomena’’. Rock Mech Rock Eng 41:85–132. Pastor, M., Blanc, T., Haddad, B. et al. (2014). ‘’Depth Averaged Models for Fast Landslide Propagation: Mathematical, Rheological and Numerical Aspects’’ ...
... poorly sorted material, started to flow down the slope as a result of motion of solid and fluid phase. Different mechanisms, rheological and numerical models are used in this area of research. Generally, there are mainly two groups of models used for modeling on flow type landslides: empirical-statistical ...
... Aspects’’. Arch Computat Methods Eng 22, 67–104. Pastor, M., Haddad, B., Sorbino, G., Cuomo, S., and Drempetic, V. (2009). ‘’A depth integrated, coupled SPH model for flow-like landslides and related phenomena’’. International Journal on Numerical Analysis and Methods in Geomechanics, 33(2): 143–172 ...Jelka Krušić, Biljana Abolmasov, Miloš Marjanović, Manuel Pastor, Saeid M. Tayyebi . "Numerical modeling of Selanac debris flow propagation using SPH code" in SCG-XIII International Symposium on Landslides. Cartagena, Colombia- February 22-26, 2021, International Society for Soil Mechanics And Geotechnical Engineering (2021)
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A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System
This paper presents a model for determining fuzzy evaluations of partial indicators of the availability of continuous systems at coal open pits using a neuro-fuzzy inference system. The system itself is a combination of fuzzy logic and artificial neural networks. The system availability is divided into partial indicators. By combining the fuzzy logic and artificial neural networks, a model is obtained that has the ability to learn and uses expert judgment for that learning. This paper deals with the ...системи, континуални системи експлоатације (роторни багер-транспортер-дробилично постројење), рударство, расположивост, меко рачунарство, фази логика, ANN, ANFISMiljan Gomilanović, Miloš Tanasijević, Saša Stepanović, Filip Miletić. "A Model for Determining Fuzzy Evaluations of Partial Indicators of Availability for High-Capacity Continuous Systems at Coal Open Pits Using a Neuro-Fuzzy Inference System" in Energies, MDPI AG (2023). https://doi.org/10.3390/en16072958
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Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia
Dragoljub Bajić, Dušan Polomčić (2014)A groundwater control system was designed to lower the water table and allow the pumping sta-tion “Bezdan 1” to be built. Based on a hydrodynamic analysis that suggested three alternative solutions, mul-ticriteria optimization was applied to select the best alternative. The fuzzy analytic hierarchy process methodwas used, based on triangular fuzzy numbers. An assessment of the various factors that influenced the selec-tion of the best alternative, as well as fuzzy optimization calculations, yielded the “weights” of the alternativesand the ...groundwater lowering, groundwater management scenario, fuzzy analytic hierarchy process,expert knowledge, triangular fuzzy numbers, linguistic variables... multicriteria optimization methods and decision-mak- ing approaches, to compare several different methods and present the results in parallel. The FAHP analysis used in the present study can be recommended for other fields of science and technology, where opti- mization is required and the best-possible ...
... discussed below. Fuzzy Optimization Method Apart from the several approaches to fuzzy opti- mization and the use of the FAHP approach described Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station 105 Fig. 1. Study area and “Bezdan 1” pumping station ...
... shipping com- pany performance evaluation. Maritime Policy and Ma- nagement, 28 (4): 375–392. CHU, A., KALABA, R. & SPRINGAM, K. 1979. A comparison of two methods for determining the weights of belong- ing to fuzzy sets. Journal of Optimization Theory and Applications, l27: 531–541. CRAWFORD, G. & WILLIAMS ...Dragoljub Bajić, Dušan Polomčić. "Fuzzy optimization in hydrodynamic analysis of groundwater control systems: Case study of the pumping station “Bezdan 1”, Serbia" in Geološki anali Balkanskoga poluostrva, Belgrade : University of Belgrade - Faculty of mining and geology (2014). https://doi.org/10.2298/GABP1475103B
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Multiple-Criteria Decision-Making in Mine Development Planning
Sanja Bajić (2023)The Borska Reka ore deposit is an experimental location where developed methodologies have been applied. It is the largest ore body within the Bor mining complex, which has been the subject of numerous studies and analyses for more than three decades. The paper focuses on the application of FAHP and the VIKOR method to address ranking of alternatives and select the optimal mining method by means of fuzzy multicriteria optimization.Sanja Bajić. "Multiple-Criteria Decision-Making in Mine Development Planning" in Proceedings of the 5th International Underground Excavations Symposium, 5-6-7 June 2023, Istanbul, Topkapi : Dinç Ofset Mat. Rek. San. ve Tic. Ltd. Şti. (2023)
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Razvoj ARCGIS geobaze površinskog kopa korišćenjem UML CASE alata
... trucks, etc.), the state of mining objects, works on mine benches coal and waste dumps. The application of GIS is especially important in the environment protection area, as it enables active monitoring of the impact of mining operations to environment: air, water and soil quality, determination of ...
... Opportunities offered by geographic information systems are very modestly exploited in Serbian mining industry. It is the authors’ wish to bring closer to the mining public at least a small part of the possibilities offered by GIS, both in mining activities and in environment protection. This paper outlines ...
... which all geographic information systems are built. The concept of “model” pertains to a semantically closed system abstraction, which represents complete and simplified reality, created in order to better understand a system. In the case of geodatabases, UML models can be created by means of various ...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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Influence of DEM resolution on numerical modelling of debris flows in RAMMS - Selanac case study
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 ...... ased models tested in RAMMS:DEBRIS FLOW® with different resolution of input data on the Selanac debris flow in Western Serbia. Keywords debris flow, modelling, RAMMS, DEM Introduction Debris flows are one of the most dangerous and unpredictable landslide types. In modelling of flow type ...
... topology input data and results (Krušić et al, 2018). The influence of topology resolution data on erosion/deposition model was also tested. Figure 4a) Calculation of deference in topography before and after the activation of the debris flow, b) Pleiades image after the event and position of defined ...
... 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 ...Jelka Krušić, Biljana Abolmasov, Mileva Samardžić Petrović. "Influence of DEM resolution on numerical modelling of debris flows in RAMMS - Selanac case study" in 4th Regional Symposium on Landslides in the Adriatic Balkan Region, 23-25 October 2019, Sarajevo, Bosnia and Herzegovina, Geotechnical Society of Bosnia and Herzegovina (2019). https://doi.org/ 10.35123/ReSyLAB_2019