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Упит dcterms_subject_txt:eksploatacija lignita

315 items

  • Determining the Availability of Continuous Systems at Open Pits Applying Fuzzy Logic

    Miljan Gomilanović, Miloš Tanasijević, Saša Stepanović (2022)
    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 композиција

  • Managing mining project documentation using human language technology

    Aleksandra Tomašević, Ranka Stanković, Miloš Utvić, Ivan Obradović, Božo Kolonja (2018)
    Purpose: This paper aims to develop a system, which would enable efficient management and exploitation of documentation in electronic form, related to mining projects, with information retrieval and information extraction (IE) features, using various language resources and natural language processing. Design/methodology/approach: The system is designed to integrate textual, lexical, semantic and terminological resources, enabling advanced document search and extraction of information. These resources are integrated with a set of Web services and applications, for different user profiles and use-cases. Findings: The ...
    Digital libraries, Information retrieval, Data mining, Human language technologies, Project documentation

  • A Fuzzy Expert Model for Availability Evaluation

    Dejan Ivezić, Miloš Tanasijević, Predrag Jovančić, Radiša Đurić (2019)
    Each technical system within itself carries the great potential danger of possible occurrence of failure and damages. Mining machines are characteristic by great investment values, costs of unplanned shutdowns, complex working conditions, and environment and workers hazards. Systematic monitoring of the mining machinery is of great importance for the management of the mining companies. Availability is the overall concept of quality of service. Includes information regard to operating state, an idle state, a standby state and shut down. The ...
    raspoloživost, ekspertski sistem, fazi teorija, buldozeri
    ... model is presented to analyze and integrate reliability, maintainability, and functionality of three types of bulldozers that operate at the lignite mines. In the end, a comparison of the bulldozers is done. Conclusions can be used for maintenance, in logistics and during the purchasing of new ...
    ... measure of availability is proposed. This model is based on fuzzy sets theory and it is implemented to three types of bulldozers that operate at the lignite mines. Obtained results are used for the improvement of maintenance and logistics procedures and additionally, could be used as a support during ...
    ... Figure 3. Structure of max-min composition (1) IV. CASE STUDY: AVAILABILITY OF BULLDOZERS Availability of bulldozers operating on surface lignite mines of Electric Power Industry of Serbia, which operate as auxiliary machines, is analyzed. Three different bulldozers (Liebherr - Lib, Dressta ...

  • Projecting short to medium-term effects of carbon emissions trading on Serbia's GDP

    Boban Pavlović, Nikola Trtica (2024)
    This paper presents an approach to assess the short to medium-term effects of the Emissions Trading System (ETS), an economic and climate policy instrument aimed at reducing greenhouse gas emissions, on GDP from the expenditure side. The analysis focuses on Serbia’s electricity sector, which relies heavily on lignite-based pro duction dominated by state-owned enterprises. The obtained projections suggest that in the short term, the introduction of an ETS may lead to slower GDP growth compared to official forecasts. However, ...
    ETS, BDP - rashodni pristup, cene električne energije
    ... reducing greenhouse gas emissions, on GDP from the expenditure side. The analysis focuses on Serbia's electricity sector, which relies heavily on lignite-based pro- duction dominated by state-owned enterprises. The obtained projections suggest that in the short term, the introduction of an ETS may ...
    ... economic projection. The main characteristics that define Serbia as a case study are that electricity production is predominantly based on coal (lignite) by a joint- stock electric utility power company wholly owned by the government. These characteristics have implications and practical relevance ...
    ... societal and political constituencies have played a central role in maintaining the status quo in the sector, primarily centered on fossil fuels, lignite coal, and large, state-backed energy companies. The electricity sector in the Western Balkans, especially in Serbia, is still dominated by s ...

  • Hidrogeoekološki uslovi eksploatacije kamenih i mrkih ugljeva Srbije

    Branko R. Miladinović (2016-04-27)
    Ugalj predstavlja energent na čijoj osnovi se razvija privreda celog sveta.Zato mu se pridaje velika pažnja u eksploataciji i preradi, bez obzira na mnogeštetne uticaje na životnu sredinu, a posebno na efekat staklene bašte koji sestvara emisijom zagađujućih materija u atmosferu radom termoelektrana naugalj.U Srbiji, resurs koji se danas u najvećoj meri koristi u proizvodnjielektrične energije je ugalj i on učestvuje u proseku sa 70 %. U strukturi ukupneproizvodnje ugljeva, dominiraju lignitski ugljevi sa učešćem od 98 %, a ...
    Srbija, kameni i mrki ugalj, podzemna eksploatacija, preradauglja, rudničke vode, hemijski sastav, emisija zagađujućih materija, životnasredina
    ... ki uslovi eksploatacije kamenih i mrkih ugljeva Srbije;Hydrogeoecological conditions for black lignite and hard coal extraction in Serbia Branko R. Miladinović Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду [ДР РГФ] Hidrogeoekološki uslovi eksploatacije kamenih i ...
    ... HIDROGEOEKOLOŠKI USLOVI EKSPLOATACIJE KAMENIH I MRKIH UGLJEVA SRBIJE doktorska disertacija Beograd, 2015. UNIVERSITY OF BELGRADE FACULTY OF MINING AND GEOLOGY Branko R. Miladinović HIYDROGEOECOLOGICAL CONDITIONS FOR BLACK LIGNITE AND HARD COAL EXTRACTION ...
    ... podzemna eksploatacija, prerada uglja, rudničke vode, hemijski sastav, emisija zagađujućih materija, životna sredina Naučna oblast: Geološko inženjerstvo Uža naučna oblast: Hidrogeologija UDK: 502/504:556:622.33(043.3) VI HYDROGEOECOLOGICAL CONDITIONS FOR BLACK LIGNITE AND HARD ...

  • Evaluation And Perspectives Of Underground Coal Mines In Serbia

    Vladimir Milisavljević, Milena Lekić, Ivica Ristović, Vojin Čokorilo, Aleksandar Cvjetić (2017)
    ... Introduction Serbia is one of the major coal producers in Europe, with over 38 Mt of coal per year. But most of this production is achieved in lignite open cast mines, which in 2016 produced 37.6 million tonnes [1]. On the other hand, combined production of all underground coal mines in Public ...
    ... Bogovina, Boljevac Brown coal 247 Jasenovac Krepoljin, Žagubica Brown coal 254 Štavalj Štavalj, Sjenica Brown coal 449 Lubnica Lubnica, Zaječar Lignite 329 Aleksinački rudnici Aleksinac, Aleksinac Contractor 4050 1) 1) Including 122 employees in management (Headquarters in Resavica). Operation ...
    ... H_Godisnjak2016_web_.pdf, approach 28th August, 2017 [2] RGF, Studija "Sagledavanje stanja i mogućnosti restrukturiranja rudnika za podzemnu eksploataciju uglja u JP Elektroprivreda Srbije", 2002; [3] DMT, RGF, Factis, Studija "Underground coal mining: Sustainability, Mine closures and Social Mitigation ...

  • 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

  • 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)
    Analitički hijererhijski proces (AHP), dozeri, eksploatacija uglja, površinski kopovi
    ... Zlatibor, Serbia, 17–20 Ocotober 2018; Jugoslovenski Komitet za Površinsku Eksploataciju: Belgrade, Serbia, 2018; pp. 14–22, ISBN 978-86-83497-25-6. 11. Ristovic, I.; Ignjatovic, D. The Reliability of Dozers on the Open Pits of Lignite in Serbia. In Proceedings of the International Carpathian Control Conference ...
    ... field of technological development projects TR 33039 and TR 33025. Acknowledgments: This paper was realized as a part of the project “Improvement of Lignite Opencast Technology in Order to Increase Energy Efficiency and Occupational Safety” (TR 33039) and a part of the project “Research on possibility for ...
    ... de Srbije. In Proceedings of the VII Međunarodna konferencija Ugalj, Zlatibor, Serbia, 11–14 October 2017; Jugoslovenski Komitet za Površinsku Eksploataciju: Belgrade, Serbia, 2017; pp. 101–110, ISBN 978-86-83497-24-9. © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open ...

  • Rangiranja bagera za njihovu revitalizaciju primenom višekriterijumske analize

    Ivan Obradović, Dragan Ignjatović, Ranka Stanković, Ljiljana Ivković (2006)
    Obzirom da je na našim površinskim kopovima trenutno u eksploataciji veći broj rotornih bagera sa sličnim tehničkim karakteristikama i približno istom starošću postavlja se pitanje kako rangirati bagere, i kojim redom da se izvrši njihova revitalizacija. Za ocenu stanja i rangiranje ovako velikog broja bagera najpogodnije se pokazalo korišćenje višekriterijumskih metoda sa višeatributnom ocenom, odnosno bodovanje referentnih indikatora stanja bagera na osnovu ekspertske ocene. U ovom radu prikazan je metodološki pristup koji je korišćen prilikom izrade Studije «Produžetak radnog ...
    rotorni bageri, revitalizacija, rangiranje, višekriterijumska analiza
    ... kada je za počela masovnija eksploatacija lignita na površinskim kopovima, mada se masovnija upotreba vezuje za otvaranje prvih velikih površinskih kopova krajem 60-tih godina. Počevši sa prvim nabavljenim rotornim bagerom SchRs 250 pa do danas, u Srbiji u eksploataciji na površinskim kopovima u basenima ...
    ... fakultet, Beograd. [3] NIP (2002-2004.) REVITALIZACIJA I MODERNIZACIJA SISTEMA ROTORNI BAGER – TRANSPORTER – ODLAGAČ NA POVRŠINSKIM KOPOVIMA LIGNITA, Rudarsko-geološki fakultet, Beograd. ...
    ... Ljiljana Ivković RUDARSKO-GEOLOŠKI FAKULTET, Đušina 7, 11000 Beograd Sažetak: Obzirom da je na našim površinskim kopovima trenutno u eksploataciji veći broj rotornih bagera sa sličnim tehničkim karakteristikama i približno istom starošću postavlja se pitanje kako rangirati bagere, i kojim ...

  • An intelligent hybrid system for surface coal mine safety analysis

    Nikola Lilić, Ivan Obradović, Aleksandar Cvjetić (2010)

  • Geometrizacija ležišta i grafička dokumentacija pri projektovanju i eksploataciji rudnika

    Zorka Obradović-Pejatović (1973)
    Geometrizacija, projektovanje, eksploatacija

  • Hidrogeologija terena rudnika soli Tušanj" s posebnim osvrtom na poslijedice eksploatacije"

    Mira Šurlan-Stojković (1980)
    Hidrogeologija, eksploatacija, Tušanj

  • Metoda doboru optymalnego zestawu wielonaczyniowychkoparek do eksploatacji zluž

    Radomir Simić (1974)
    Površinska eksploatacija, ugalj

  • Autonomnost lokalnih sistema automatske regulacije provetravanja rudnika sa podzemnom eksploatacijom

    Dragomir Kocić (1975)
    Podzemna eksploatacija, provetravanje

  • Termičke metode povećanja iskorišćenja naftnih ležišta

    Vesna Karović Maričić (2019)
    Ležišta nafte, eksploatacija

  • Tehnička i biološka rekultivacija deponije pepela i šljake na Površinskom kopu Gračanica, Gacko

    Boban Crnogorac (2024)
    U završnom radu prikazane su faze rekultivacije u cilju uklanjanja degradiranih površina nastale usled deponovanja pepela i šljake, tehnološki proces nastajanja istih, kao i način transporta i odlaganja šljake i pepela. Primenjena je optimalna rekultivacija koja se sastoji od tehničke i biološke rekultivacije. Detaljno je predstavljen opis izvođenja radova tehničke i biološke rekultivacije, ukupni troškovi svih radova, kao i izbor metoda prevođenja degradiranih površina izazvanih odlaganjem šljake i pepela, u cilju njihove rekultivacije i rehabilitacije u njihov koliko je moguće prvobitni oblik. Ovi ciljevi se ...
    Površinska eksploatacija, PK „Gračanica“, Tehnička rekultivacija, Biološka rekultivacija, zaštita životne sredine, pepeo, šljaka
    ... polje, Istočno eksploataciono polje i Povlatna ugljena zona. Prvi radovi na eksploataciji uglja u Gacku su počeli 1954. godine na izdancima glavnog ugljenog sloja, a 1982. godine Jje pušten u rad rudnik lignita "Gračanica" sa godišnjim kapacitetom od 1 800 000 tona uglja i 3 200 000 m otkrivke ...
    ... og fakulteta, Repozitorijum predmeta Tehnologija površinske eksploatacije, Beograd [5] · „Dimitrijević B., (2021), Tehnologija površinske eksploatacije — Skripta 1. sa Praktikumom, Tehnika i tehnologija diskontinualne eksploatacije, Univerzitet u Beogradu, Sajt Rudarsko-geološkog fakulteta, Platforma ...
    ... Platforma Teams predmet — Tehnologija površinske eksploatacije, Beograd [6] · Dimitrijević B., (2021), Tehnologija površinske eksploatacije — Skripta 2. sa Praktikumom, Tehnika i tehnologija kontinualne eksploatacije, Univerzitet u Beogradu, Sajt Rudarsko-geološkog fakulteta, Platforma Teams ...

  • Ventex: an expert system for mine ventilation systems analysis

    Nikola Lilić, Ranka Stanković, Ivan Obradović (1997)
    roblems relating to mine ventilation systems analysis are usually of a very complex nature. They involve the estimation of numerous interdependent parameters pertaining to the network status, ventilation status, ventilation system stability, air current losses, climate conditions, gas state, fire risk and dangerous dust pollution risk. The solution to these problems relies, to a great extent, on numerical methods. With the development of computer technology these methods were incorporated as numerical routes in software packages, such as the mine ...
    expert system, mine ventilation

  • Upotreba lidar tehnologije i digitalne fotogrametrije primenom iPhone pametnih telefona na primeru rudnika "Rudnik"

    Nikola Mirković, Luka Crnogorac, Aleksa Paunović (2024)

  • Doprinos izboru metoda projektovanja podzemne eksploatacije ležišta uranijuma žilnog tipa male debljine

    Dragan Milojević (1981)
    Podzemna eksploatacija, projektovanje, uranijum

  • Doprinos rešavanju problema izbora i određivanja osnovnih parametara rudarskih radionica u podzemnoj eksploataciji

    Slobodan Luković (1979)
    Podzemna eksploatacija, rudarske radionice