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Упит dcterms_subject_txt:rock blasting

86 items

  • Preparation of Multimedia Document “YU Rock Scene”

    Milena Obradović, Aleksandra Arsenijević, Mihailo Škorić (2017)
    SUMMARY: This study will present the preparation process of a multimedia document entitled YU ROCK SCENE in which participants were senior students of undergraduate studies of the Department of Library and Information Science at the University of Belgrade Faculty of Philology during the academic year 2014/2015, as a part of the subject Multimedia Documents. This study gives an overview of the historical development of rock and roll in the territory of the former Yugoslavia, rock scene in Yugoslav republics, ...
    multimedia document, library science, information science, rock and roll, music, Yugoslavia
    ... directions developed in rock and roll music: country pop rock (com- bination of ethno sound and rock style) and the western, mostly Anglo-American rock. Unlike the world rock scene whose texts were a powerful means of propaganda against wars and class conflicts, original domestic rock texts had visual and ...
    ... were greatly influenced by the hippy movement, but then branching of rock music into sub-branches began, giving rise to hard rock, progressive rock, art rock, jazz, blues and others. At the end of that decade, punk appeared (under the influence of British and American punk bands such as The Sex Pistols ...
    ... the real cultural rock revolution commenced. Special radio shows were made and articles were written which were dedicated to this new music genre. One of the first Slovenian rock bands which made a break- through to the big rock scene of the entire Yugoslavia was group Kameleoni. Rock music in Slovenia ...

  • 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)
    ... 4.0m wide. The mining of bauxite is performed backwards, in retreat towards the level gallery, by rock drilling of mining holes in the shape of semi-fan and blasting ("semi-fan"). Angle of blasting surface is 60°, while the internal distance between the semi- fans is 1.8m, which is the least resistance ...

  • Uniaxial compressive strength test before and after standard fire test on rock mass

    Stefan Mitrović, Goran Todorović, Bojan Kostić, Milica Mirković-Marjanović, Nikola Božović, Marija Krstić, Aleksandar Erić, Radovan Gospavić, Snežana Ilić, Aleksandar Kijanović (2022)
    ... drilling and blasting material. Such material was delivered. The characterization of the rock material was performed. 2. EXPERIMENTAL RESEARCH 2.1. Material characterization, microscopic description Rock has a clastic, psammitic texture. It is made of quartz clast, fragments of rock minerals ...
    ... uniaxial compressive strength of rock after fire. Uniaxial compressive strength is an important parameter of rock material in the field of rock mechanics. It is the basic parameter for determining strength and classification of rock mass. It is determined experimentally, by laboratory strength ...
    ... study was to examine the uniaxial compressive strength of the rock, before and after standard fire test on the rock mass. The paper presents the strengths of the specimens tested before and after standard fire test. KEYWORDS Rock; Uniaxial compressive strength; Standard fire test. ...

  • Дефинисање механичких својстава алтерисаног стенског материјала лабораторијским методама

    Вељко М. Рупар (2022)
    Основни циљ овог рада је да представи методологију одређивања механичких својстава хетерогеног стенског масива који изграђују дацит (Д) и алтерисани дацит (АД), где је уочена је зона постепеног преласка од алтерисаног дацита до дацита. Механичка својства стенског масива у тој зони утврђена су на основу лабораторијских испитивања једноосне и троосне чврстоће на притисак стенског материјала композитних узорака. Композитни узорци су се састојали од дискова стенског материјала, при чему је висина дискова h дефинисала различити процентуални удео појединог стенског материјала, ...
    дацит, алтерисани дацит, једноосна чврстоћа на притисак, троосна чврстоћа на притисак, композитни узорци, механика стена, стабилност косина

  • Definition of criteria and alternatives for choosing the optimal mining method deposits when applying multi: Criteria optimization, Belgrade, June 2024

    Sanja Bajić, Dragoljub Bajić, Branko Gluščević, Radmila Gaćina, Josip Išek (2024)
    multi-criteria decision-making, definition of criteria, underground exploitation

  • BEYOND 2020 - Geology explorations and open pit activities affectation in reclamation designing in Kolubara Coal Mines (KCM) Serbia, new considerations

    Bojan Dimitrijević, Bogoljub Vučković, Radmila Gaćina (2023)
    Geology explorations in KCM runs from 1936. year up to these days and still ongoing. Results in >7,200 drill holes with ≈600,000 m of core drilling and gave lignite ore resources of > 4,1Bt, which 1,15Bt are excavated since 1986. of XIX up to early years of XXI century. For further mining operations in open pits stay 1,5Bt of lignite. Under waste heaps are ≈80 km2, additional 85 km2 should be filled. All of that masses/areas were, are ...

  • Termička zrelost organske supstance i naftno-matični potencijal istočne Hercegovine

    Nikoleta Aleksić (2021)
    Cilj istraživanja, obrade i interpretacije rezultata prikazanih u disertaciji je utvrđivanje termičke zrelosti organske supstance i naftno-matičnog potencijala sedimentnih stena na području istočne Hercegovine, primenom metoda pirolize Rock-Eval, organo-petrografskog proučavanja organske supstance u normalnoj svetlosti i fluorescenciji, koja je pored kvalitativne analize uključila posebno i refleksiju vitrinita. Osim toga, na osnovu organsko-geohemijskih analiza sagledane su karakteristike i poreklo ekstrahovanog bitumena metodom gasne hromatografije - masene spektrometrije, pri čemu su izvršene analize biomarkera kao geohemijskih indikatora. Tokom rada na doktorskoj ...
    organska supstanca, termička zrelost, matične stene, naftni potencijal, refleksija vitrinita, piroliza Rock-Eval, biomarkeri, Karbonatna platforma, istočna Hercegovina

  • Оцјена водопропусности понорске зоне Шуковићу (Цернићко поље) помоћу Лижоновог теста

    Петар Војновић, Саша Милановић, Љиљана Васић (2022)
    One of the specificities of reservoirs forming in highly karstified terrains is reflected in the wide range of unknowns, specifically during reservoir formation, filling and operation. Unfortunately, despite complex research, many reservoirs constructed in karst terrains have problems with water losses from the reservoir to other aquifers due to ponor and ponor zones which are a common in the karst of Eastern Herzegovina. One of such zones is Šuković ponor located in the southern part of the Cerničko polje ...
    карст, Шуковића понор, Церничко поље, водопропусност, Лижонов тест

  • 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.

  • 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

  • From volcanology to petrogenesis: an example from Cenozoic volcanic rocks of Serbia

    Vladica Cvetković, Kristina Šarić (2023)
    vulkanska stena, piroklastični depozit, dacit, andezit, kvarclatit, lamproit, magma miksing, explozivna aktivnost

  • 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

  • Rule-based Automatic Multi-word Term Extraction and Lemmatization

    Ranka Stanković, Cvetana Krstev, Ivan Obradović, Biljana Lazić, Aleksandra Trtovac (2016)
    In this paper we present a rule-based method for multi-word term extraction that relies on extensive lexical resources in the form of electronic dictionaries and finite-state transducers for modelling various syntactic structures of multi-word terms. The same technology is used for lemmatization of extracted multi-word terms, which is unavoidable for highly inflected languages in order to pass extracted data to evaluators and subsequently to terminological e-dictionaries and databases. The approach is illustrated on a corpus of Serbian texts from ...
    term extraction, terminology, multi-word units, lemmatization, finite-state transducers
    ... električna.f energija.f ‘electric energy’ whose simple word lemma is *električni.m energija.f. The second case occurs with the MWT minerski.p radovi.p ‘blasting works’ whose simple word lemma is *minerski.s rad.s. These correct lemma candidates, provided with information about their syntactic structures ...

  • Effectiveness Analysis of Different Bucket-wheel Excavators

    Stevan Đenadić, Predrag Jovančić, Dragan Ignjatović, Miloš Tanasijević, Filip Miletić (2021)
    Coal production in open-pit lignite mines in the Republic of Serbia is performed with continuous work systems. In addition to coal production, the same systems are used for the exploitation of large quantities of overburden. According to the reliability concept, continuous systems are in linear connection. If the failure occurs in one part of the system, that will produce a downtime of the entire system. The initial and most important factor of continuous systems is the bucket-wheel excavator. It ...
    bucket-wheel excavator, open-pit coal mine, mining, multi-criteria decision methods

  • Mineralogical analysis of a clay body from Zlakusa, Serbia, used in the manufacture of traditional pottery

    Maja Milošević, Biljana Đorđević, Mihovil Logar (2020)
    калцит, сирова глина, традиционална керамика, Злакуса
    ... bottom right) on 'Vrstine Hill. The extraction of calcite is achieved when the overbur- den of soil is removed. Calcite, once it is destroyed by blasting, is then easily removed from the bed due to its physical properties. Preparation of the clay body According to Djordjević (2013), after mixing ...

  • Terminology Acquisition and Description Using Lexical Resources and Local Grammars

    Cvetana Krstev, Ranka Stanković, Ivan Obradović, Biljana Lazić (2015)
    Acquisition of new terminology from specific domains and its adequate description within terminological dictionaries is a complex task, especially for languages that are morphologically complex such as Serbian. In this paper we present an approach to solving this task semi-automatically on basis of lexical resources and local grammars developed for Serbian. Special attention is given to automatic inflectional class prediction for simple adjectives and nouns and the use of syntactic graphs for extraction of Multi-Word Unit (MWU) candidates for ...
    ... of the noun (simple word lemmas are always in the masculine gender). For example, when simple word lemmatization offers a lemma minskim bušotinaf ‘blasting boreholes’ it has to be corrected to minskaf bušotinaf. 2. For all MWUs, the right number of the MWU has to be selected: if it appeared in a text ...

  • Rezultati ispitivanja parametara čvrstoće i dinamičkih svojstava mermera i mogućnost njihove korelacije

    Jelena Majstorović-Necković, Vladimir Čebašek, Veljko Rupar (2023)
    Ispitivanja stena kao radne sredine, odnosno materijala sa kojim se gradi, na kome se gradi i u kome se gradi, svojom složenošću zahteva njeno svestrano izučavanje po velikom broju parametara. Zadatak Mehanike stena je da što bolje upozna ponašanje stenske mase i njenu otpornost na dejstvo pritiska, zatezanja i smicanja, kao i dinamičkih svojstava. Poznavanje navedenih parametara i njihova korelacija omogućavaju pouzdaniji izbor parametara za projektovanje danas sve zahtevnijih uslova kako podzemne, tako i površinske eksploatacije. U ovom radu ...
    mermer, jednoosna čvrstoća na pritisak, čvrstoća na istezanje, brzina longitudinalnih elastičnih talasa, korelacija

  • Hronološki pregled razvoja površinske eksploatacije lignita u Srbiji

    Bojan Dimitrijević, Radmila Gaćina, Bogoljub Vučković (2023)
    U ovom preglednom radu dat je istorijski pregled razvoja površinske eksploatacije lignita na teritoriji Srbije, uz kratak osvrt na geološki nastanak i kvalitet i rezerve uglja, kao i mogućnosti korišćenja za dalju upotrebu. Kolubarski, Kostolački i Kovinski ugljeni baseni lignita u Srbiji, ne računajući Kosovsko-Metohijski i Drenički u sastavu AP Kosovo i Metohija po Rezoluciji 1244 UN, su ležišta najrasprostranjenijeg uglja - lignita u Srbiji koji se eksploatiše od druge polovine 20. veka na velikom broju površinskih kopova ...
    površinska eksploatacija ugalja, lignit, Kolubara, Kostolac, Srbija

  • 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
    ... Grid-Tied BIPV System in Serbia, Proceedings, 4% World Conference on Photovoltaic Energy Conversion, Waikoloa, Hi. USA, 2006 Purtić, N., Drilling and Blasting (in Serbian), Faculty of Mining and Geology, Belgrade, Serbia, 1991 Vujasinovic, S., Groundwater Protection (in Serbian), Faculty of Mining and ...
    ... (such as water, gel or foam), containing send or other proppants suspended with var- ious agents. Hydraulic fracturing creates cracks in the deep rock formations through which gases flow. The coal layer is usually ignited by inserting a hot coke through the borehole and blowing the low pressure ...
    ... appropriate measures for protection will be built or undertaken (investigative works, experimental filtration field tests, laboratory tests, water and rock chem- ical analysis, efc.). Free groundwater in the walls of the massif, unlike surface waters, have been ex- posed to significantly different ...

  • Споменица 1991. – 2015. година: 135 година геологије и 70 година рударства на Универзитету у Београду

    главни и одговорни уредник Душан Поломчић (2016)
    Рударско-геолошки факултет
    ... MITROVIĆ S., KRIČAK L., NEGOVANOVIĆ M., JANKOVIĆ I., ZEKOVIĆ D., 2009: Influence of rock mass blastability on explosive energy distribution. Proceedings of the 9th International Symposium on Rock Fragmentation by Blasting, 13.-17. September, Granada, Spain, CRC Press, pp. 249–255. KRIČAK L., NEGOVANOVIĆ ...
    ... MITROVIĆ S., KRIČAK L., NEGOVANOVIĆ M., JANKOVIĆ I., ZEKOVIĆ D., 2009: Influence of rock mass blastability on explosive energy distribution. Proce- edings of the 9th International Symposium on Rock Fragmentation by Blasting, 13.-17. September, Granada, Spain, CRC Press, pp. 249–255. KRIČAK L., NEGOVANOVIĆ ...
    ... KRIČAK L., KECOJEVIĆ V., 2007: Modeling an artificial screen for reducing seismic vibration generated from blasting. Proceedings of the 33rd Annual Conference on Explosives and Blasting Technique, 27.-31. January, 4. СПИСАК ИЗАБРАНИХ НАУЧНИХ И СТРУЧНИХ РАДОВА НАСТАВНИКА И САРАДНИКА ФАКУЛТЕТА ...