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2175 items
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Steel Arch Support Deformations Forecast Model Based on Grey–Stochastic Simulation and Autoregressive Process
Relatively large deformations of the steel arch support in underground coal mines in the Republic of Serbia present one of the main problems for achieving the planned production of coal. Monitoring of the critical sections of the steel arch support in the underground roadways is necessary to gather quality data for the development of a forecasting model. With a new generation of 3D laser scanners that can be used in potentially explosive environments (ATEX), deformation monitoring is facilitated, while ...čelična podgrada, prognoza deformacija, vremenske serije, grey-stohastička simulacija, autoregresija, podzemni rudnik ugljaLuka Crnogorac, Suzana Lutovac, Rade Tokalić, Miloš Gligorić, Zoran Gligorić. "Steel Arch Support Deformations Forecast Model Based on Grey–Stochastic Simulation and Autoregressive Process" in Applied Sciences, MDPI AG (2023). https://doi.org/10.3390/app13074559
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Kinetics of electric arc furnace slag leaching in alkaline solutions
Nikolić Irena, Drinčić Ana, Đurović Dijana, Karanović Ljiljana, Radmilovic V. Vuk, Radmilovic R. Velimir (2016)Nikolić Irena, Drinčić Ana, Đurović Dijana, Karanović Ljiljana, Radmilovic V. Vuk, Radmilovic R. Velimir. "Kinetics of electric arc furnace slag leaching in alkaline solutions" in Construction and Building Materials 108, Radarweg 29; Amsterdam, 1043 NX; Netherlands; Subscr. to: Elsevier BV, PO Box 211, Amsterdam, 1000 A:Elsevier BV (2016): 1-9. https://doi.org/10.1016/conbuildmat.2016.01.03
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Probabilistic analysis of anisotropic rock slope with reinforcement measures
During the construction of E75 highway through Grdelica gorge in Serbia, a major failure occurred in the zone of reinforced rock slope. Excavation was performed in highly anisotropic Paleozoic schist rock formation. The reinforcement consisted of the two rows of micropile wall with pre-stressed anchors. Forces in anchors were monitored with load cells while benchmarks were installed for superficial displacement measurements. The aim of the study is to investigate possible causes of instability considering different probability distributions of the ...Zoran Berisavljević, Dušan Berisavljević, Miloš Marjanović, Svetlana Melentijević. "Probabilistic analysis of anisotropic rock slope with reinforcement measures" in Geomechanics and Engineering (2023). https://doi.org/10.12989/gae.2023.34.3.285
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Mio-Pliocene Geodynamics and its Stratigraphic Consequences in the Area of Avala Mt. (Belgrade, Serbia)
... Belgrade, Faculty of Mining and Geology, Department of Regional geology, Kamenička 6, 11000 Belgrade, Serbia *corresponding author: ljupko.rundic@rgf.bg.ac.rs In recent years, thanks to numerous infrastructural works and construction of the local roads, new outcrops and sections near Avala Mt. have ...
... Belgrade, Faculty of Mining and Geology, Department of Regional geology, Kamenicka 6, 11000 Belgrade, Serbia *corresponding author: ljupko.rundic@raf.bg.ac.rs In recent years, thanks to numerous infrastructural works and construction of the local roads, new outcrops and sections near Avala Mt. have ...
... Neogene of Central and South-Eastern Europe 57 58 7th International Workshop | Neogene of Central and South-Eastern Europe data are obtained from the previously known stratigraphic units (Pannonian and Pontian, sensu Stevanović). Based on litho- and biostratigraphic analysis and measurement of ...Ljupko Rundić, Meri Ganić, Slobodan Knežević, Dejan Radivojević. "Mio-Pliocene Geodynamics and its Stratigraphic Consequences in the Area of Avala Mt. (Belgrade, Serbia)" in 7th International Workshop: Neogene of Central and South-Eastern Europe, Velika, Croatia, maj 2017, Croatian Geological Society (2017)
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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... groundwater intrusion and provide for unhin- dered construction of the “Bezdan 1” PS. Figure 2 shows the lowering of the water table of the analyzed alternatives. For each alternative, the characteristics of the groundwater control system: the number of wells and their spatial distribution, and the time need- ...
... needed to lower the water table to below the design elevation and allow for the construction work to proceed is 5 days. • Alternative 2 (A2): Long-term average maximum stages of the canals within the study area (Baračka Canal 86.61 m.a.s.l. and Bezdan–Vrbas Canal 85.16 m.a.s.l.) were used in the predictive ...
... In the present study, as the number of wells increased, so did capital expendi- ture and operating and maintenance costs. However, it should be noted that in some cases the construction of wells is more economical than the pumping time. Flexibility included the ability of the system to adapt to possible ...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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Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements
The capacity of the rotor excavator depends largely on the operation of the subsystem for digging. There is a great contribution to the correct and sharp teeth when the capacity is the highest. In the function of time, the teeth become clogged due to abrasive wear, or changes in their geometric shape. To analyze the bucket wheel drive in depend on wear of the cutting elements in this study adaptive neuro fuzzy inference system (ANFIS) approach was implemented. ANFIS ...Filip Miletić, Predrag D. Jovančić, Milos Milovančević, Dragan Ignjatović. "Adaptive neuro-fuzzy prediction of operation of the bucket wheel drive based on wear of cutting elements" in Advances in Engineering Software, Elsevier BV (2020). https://doi.org/10.1016/j.advengsoft.2020.102824
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Geotechnical effects of municipal solid waste destruction with different compaction methods
Jovana M Janković Pantić, Dragoslav R Rakić, Irena G Basarić Ikodinović, Tina D Đurić, Gordana Hadži-Niković (2022)Disposal of waste in municipal solid waste landfills is the only way of waste disposal in Serbia, with daily compaction and covering with soil material. Due to less space for the construction of new landfills, it is necessary to use their maximum capacity. Well-compacted municipal solid waste takes up less volume and enables safer storage, so it is useful to previously determine the compaction parameters in the laboratory: maximum dry unit weight (γdmax) and optimal water content (wopt). In ...Jovana M Janković Pantić, Dragoslav R Rakić, Irena G Basarić Ikodinović, Tina D Đurić, Gordana Hadži-Niković. "Geotechnical effects of municipal solid waste destruction with different compaction methods" in Доклади на Българската академия на науките Comptes rendus de l’Acad´emie bulgare des Sciences (2022). https://doi.org/10.7546/CRABS.2022.01.13
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Geotehnički aspekti izgradnje visećeg pešačkog mosta u Starom gradu u Užicu
U radu su prikazani rezultati geotehničkih istraživanja za potrebe izgradnje visećeg pešačkog mosta preko klisure reke Đetinje u Užicu. Predviđeno je da most, sistema prednapregnute trake, omogući prelaz pešacima sa desne dolinske strane na stranu Starog grada, koja je opasana strmom liticom (cca. 40 m visine). Za potrebe formiranja geotehničkog modela i strukturnog sklopa krečnjačke stenske mase korišćen je postupak fotogrametrijskog snimanja dronom. Predviđeno je da se zatežuća sila (od oko 30 MN), koju most prenosi na obalni stub, ...fotogrametrija, stabilnost kosina, pukotine, prednapregnuta sidra, test granične nosivosti, paker (Ližonov) test... test granične nosivosti, Paker (Ližonov) test GEOTECHNICAL ASPECTS OF CONSTRUCTION OF STRESSED RIBBON BRIDGE IN UŽICE OLD TOWN Summary: This study shows the results of geotechnical investigations performed for the construction of pedestrian suspension bridge, crossing the Đetinja river in the town ...
... behaviour. If Joints are applied explicitly the displacements are in the order of 6 cm. These findings have to be confirmed by monitoring during the construction stage. Keywords: photogrammetry, slope stability, discontinuities, pre-stressed anchors, investigation test, Packer (Lugeon) test ! dr,doc. ...
... the Old town is located. Geotechnical model of the limestone rock mass and joint network model are formed by utilization of drone photogrammetry. The tensile force (approx. 30 MN) induced on the bridge pillar should be accepted and transfered to the rock mass by the system of prestressed anchors. Two ...Zoran Berisavljević, Miloš Marjanović, Uroš Đurić. "Geotehnički aspekti izgradnje visećeg pešačkog mosta u Starom gradu u Užicu" in Zbornik radova / Međunarodno naučno-stručno savetovanje Geotehnički aspekti građevinarstva i zemljotresno inženjerstvo, Vrnjačka banja, 1-3. novembar 2023., Beograd : Savez građevinskih inženjera Srbije (2023.)
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The challenges for Z-generation geologists
Dejan Radivojević (2022)Nastupajuća generacija geologa suočava se sa nekim problemima koji su poznati i njihovim prethodnicima, ali takođe i sa do sada novim i nepoznatim izazovima. Činjenica da mnogi geologiju povezuju sa „prljavim“ industrijama u kojima će biti sve manje prilika za zaposlenje u vreme kada se teži čistoj vodi, zemljištu i vazduhu kao i to da je smatraju zastarelom u sadašnje vreme brzog tehnološkog razvoja dovela je do velikog pada interesovanja za studije geologije svuda u svetu. Neophodno je još ...Dejan Radivojević. "The challenges for Z-generation geologists" in Tehnika, Beograd : Savez inženjera i tehničara Srbije (2022). https://doi.org/10.5937/tehnika2201037R
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Assessments of effects of implementation of strategic plans for development of Belgrade District heating system
The district heating system (DHS) is one of the key elements of the Belgrade energy system. Overview of the current state and basic characteristics of the DHS are presented in this paper. The focus is on the planned development of DHS and on the analyses of effects of realization of measures and projects defined by strategic documents related to DHS which are adopted by city authorities (Development Strategy of DHS and Strategy of Belgrade Development). Two exploratory scenarios were ...Dejan Ivezić, Marija Živković, Aleksandar Madžarević, Miodrag Grujić. "Assessments of effects of implementation of strategic plans for development of Belgrade District heating system" in Sustainable Cities and Society, Elsevier BV (2020). https://doi.org/10.1016/j.scs.2020.102304
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Анализа одрона у стенским косинама: савремени приступи
Милош Марјановић (2023)У Србији и региону познате су бројне појаве одрона које су изазвале велике застоје саобраћаја, материјалне штете или чак имале фаталне исходе, па их је потребно непрестано пратити и изучавати. Mодeловањe одрона скопчано је са ниским нивоом поузданости, али савремене технологије омогућавају да сe такви изгледи донекле побољшају. Једна од технологија која чини искорак утом правцу јe LiDAR-ско скенирање, које обезбеђује детаљне топографске подлоге у виду облака тачака високе резолуције и тачности. Поступак анализе одрона може се свести на: ...Милош Марјановић. "Анализа одрона у стенским косинама: савремени приступи" in Записници Српског геолошког друштва, Београд : Српско геолошко друштво (2023)
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Application of the VIKOR Method for Selecting the Purpose of Recultivated Terrain after the End of Coal Mining
Radmila Gaćina, Sanja Bajić, Bojan Dimitrijević, Tomislav Šubaranović, Čedomir Beljić, Dragoljub Bajić (2024)Radmila Gaćina, Sanja Bajić, Bojan Dimitrijević, Tomislav Šubaranović, Čedomir Beljić, Dragoljub Bajić. "Application of the VIKOR Method for Selecting the Purpose of Recultivated Terrain after the End of Coal Mining" in Proceedings of the Bulgarian Academy of Sciences, Bulgaria, 28. maj 2024 , Prof. Marin Drinov Publishing House of BAS (Bulgarian Academy of Sciences) (2024). https://doi.org/10.7546/CRABS.2024.07.10
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A Lexical Approach to Acronyms and their Definitions
In this paper we present a comprehensive approach to acronyms for Natural-Language Processing (NLP) of Serbian texts. The proposed procedure includes extraction of acronyms and their definitions that are usual Multi-Word Units (MWUs), shallow parsing of MWUs that enables MWU lemmatization and production of entries in morphological electronic dictionaries, both for MWU and acronyms, that are provided with grammatical, syntactic, semantic and domain information. This approach enables representation that reflects complex relations between acronyms and their definitions.... of Education and Science under grants 47003 and 178003. 6. References Jacobs, K., A. Itai, and S. Wintner, 2014. Acronym Dic- tionary Construction and Disambiguation (abstract). 3rd Parseme General Meeting – Poster Session. Krstev, C., R. Stanković, I. Obradović, D. Vitas, and M. Utvić, 2010 ...
... forms: AN, NprepN or NconjN (A stands for an adjective, N for a noun, prep for a preposition and conj for a conjunction; adjectives and/or nouns in a construction have to agree in gender, number, case and animatness, as appropriate for each particular form). Three word definitions have much more ...
... 2010. Automatic construction of a morpho- logical dictionary of multi-word units. In IceTAL, vol- ume 6233 of LNCS. Springer. Krstev, C. and D. Vitas, 2005. Corpus and Lexicon – Mu- tual Incompletness. In Proc. of the Corpus Linguistics Conference, Birmingham. Liberman, Mark Y and Kenneth W Church ...Cvetana Krstev, Duško Vitas, Ranka Stanković. "A Lexical Approach to Acronyms and their Definitions" in Proceedings of the 7th Language & Technology Conference, November 27-29, 2015, Poznań, Poland, Springer (2015)
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Analiza sistema odvodnjavanja površinskog kopa Drmno od podzemnih voda sa severnim savršenim ekranom
Izrada nesavršenog ekrana do drugog sloja uglja na površinskom kopu Drmno, pored zadržavanja postojećih standardnih metoda odvodnjavanja od podzemnih voda linijama bunara, predviđena je poslednje decenije u celokupnoj rudarskoj projektnoj dokumentaciji. Iz objektivnih i subjektivnih razloga njegova realizacija nije ostvarena do danas. U međuvremenu je, uz dodatna geološka istraživanja i promenu dinamike i parametara sistema površinske eksploatacije, došlo do određenih značajnih prostornih promena geoloških i rudarskih uslova u eksploatacionom polju. Ovo je omogućilo preliminarno inoviranje pristupa procesu i konceptu ...Tomislav Šubaranović, Dušan Polomčić, Vladimir Pavlović. "Analiza sistema odvodnjavanja površinskog kopa Drmno od podzemnih voda sa severnim savršenim ekranom" in Zbornik apstrakata sa 9. Međunarodne konferencije Ugalj, Zlatibor, 2019., Jugoslovenski komitet za površinsku eksploataciju (2019)
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Conversion of land areas after coal mine closure and reclamation
Otkopavanje uglja površinski i podzemno praćeno je degradacijom zemljišta, promenom formiranja predela i izmenom flore i faune. Od velikog značaja je razvoj novih naučno utemeljenih pristupa obnovljanje antropogeno poremećenih predela zasnovanih na formiranju rekultivacionih i rudarskih tehnologija. Apsolutno je neophodno obezbediti sveobuhvatno kvalitetno očuvanje zemljišnih i vodnih resursa i odrediti rekultivisano zemljište za novu namenu. U ovom članku je dat pregled najpopularnijih metoda rekultivacije zemljišta i mogućnosti rekultivacije zemljišta nakon završetka rekultivacije i zatvaranja rudnika uglja.... A4 Agriculture - viticulture A5 Forestry and agriculture (combination AI/A/2, A4) A6 Park and horticulture A7 Zone for industrial construction - wind generators A8 Zone for industrial construction — solar panels A9 Agricultural settlements and restitution for rural settlements +Al1I/A1-A5 ...
... on. When it comes to reallocating and rehabilitating land after coal extraction, solar plants on conversion sites provide a win-win solution for all participants. The energy efficiency and construction capabilities of solar modules allow for the successful and cost-effective reallocation of envi ...
... transport, storage and treatment of mineral resources and the working of quarries). According to the Serbian Law on Mining, technical and biological reclamation and spatial arrangement must be performed with the purpose of environmental protection, regeneration, land reclamation and arrangement of the ...Radmila Gaćina, Bojan Dimitrijević, Sanja Bajić. "Conversion of land areas after coal mine closure and reclamation" in 9th International conference mining and environmental protection MEP 23 Proceedings, Sokobanja, 24-27.05.2023., Belgrade : University of Belgrade - Faculty of mining and geology (2023)
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Geotechnical aspects for construction of bank revetment along the Sava river for the “Belgrade waterfront”
Rakić Dragoslav, Basarić Irena, Stanić Nemanja, Filipović Vladimir, Berisavljević Dušan. "Geotechnical aspects for construction of bank revetment along the Sava river for the “Belgrade waterfront”" in Geotechnical aspects for construction of bank revetment along the Sava river for the “Belgrade waterfront”, Vrnjačka Banja:Srpsko geološko društvo (2018): 641-646
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Legal framework for recultivation of degraded areas caused by mining exploitation
Radmila Gaćina (2023)Prilikom površinske i podzemne eksploatacije uglja eksploatacioni sistemi oštećuju veće ili manje površine zemljišta. Iskustva pokazuju da su oštećenja zemljišta znatno veća kod površinske eksploatacije, gde je prostora degradiran ne samo u konturi rudnika i okoline, već se promene takođe dešavaju u prirodnom okruženju. U članku su predstavljeni rezultati studije zakonskih okvira rekultivacije u nekim zemljama sveta i u Srbiji. Praktično iskustvo rekultivacije pokazalo je da iskorišćenje i devastacija tokom rudarske aktivnosti predstavljaju opasnost ne samo za pogođena ...... publish and represent a detailed regulation on LRR. Regulation on Compiling Land Reclamation Plan (RCLRP) was issued in 2011, contains 7 parts (general rules, opencast coalmine, underground coal mine, metal mine, petroleum and natural gas (including coal-bed gas), construction projects, and uranium ...
... environment, taking into account landscape architecture (Ignatyeva, 2020). Failure to plan and to start rehabilitation early in the life of the operation may create an obstacle to building the knowledge and capacity necessary to deliver a sustainable outcome that meets agreed success criteria (Australian ...
... the usable values to degraded land by appropriate land modelling, improvement of grounds properties, water regulation, soils restoration and roads construction. Rehabilitation means the return to the natural state according to the original land development plan. Tthe return to the natural state ...Radmila Gaćina. "Legal framework for recultivation of degraded areas caused by mining exploitation" in Underground mining engineering, Belgrade : University of Belgrade - Faculty of Mining and Geology (2023). https://doi.org/10.5937/podrad2342027G
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Geotechnical Conditions of Industrial Waste Landfill Construction for U.S. Steel Serbia
Rakić Dragoslav, Vojnović Bogdan, Berisavljević Dušan, Basarić Irena. "Geotechnical Conditions of Industrial Waste Landfill Construction for U.S. Steel Serbia" in Proceedings of the XV Balkan Mineral Processing Congress, Sozopol, Bulgaria: (2013): 1056-1060
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Geotechnicsl conditions for construction of bank revetment on the Sava amphitheatre area in Belgrade - Serbia
Rakić Dragoslav, Stanić Nemanja, Basarić Irena, Filipović Vladimir. "Geotechnicsl conditions for construction of bank revetment on the Sava amphitheatre area in Belgrade - Serbia" in XVI Danube - European conference on geotechnical engineering – DECGE 2018, Skoplje:Wely (2018): 755-760
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Application of unconventional methods of underground premises construction in coal mines
Vidanović Nebojša, Ognjanović Saša, Ilinčić Nebojša, Ilić Nebojša, Tokalić Rade. "Application of unconventional methods of underground premises construction in coal mines" in Technics Technologies Education Management / TTEM 6 no. 4, Sarajevo, Bosnia & Herzegovina:DRUNPP, Sarajevo (2011): 861-865