Претрага

Упит dcterms_subject_txt:underground exploitation

217 items

  • Regionalna karakterizacija karstnih podzemnih voda dela centralnog Balkana u funkciji njihovog održivog korišćenja i menadžmenta

    Veljko J. Marinović (2022)
    Karstne podzemne vode koristi oko 700 miliona ljudi na svetu, čime je njihov značaj za svetsko stanovništvo nemerljiv. U sklopu doktorske disertacije vršena su istraživanja i analize karstnih sistema dela centralnog Balkana (Srbije, Crne Gore i Savskog sliva Bosne i Hercegovine), kako bi se evaluirao ovaj dragoceni resurs. Analize su vršene na primerima karstnih sistema vrela Perućac, Seljašnica, Mokra i Mlava (Srbija), Oko Bijele i Rijeka Crnojevića (Crna Gora) i vrelo Bosne (Bosna i Hercegovina), kao i na regionalnom ...
    karstni sistem, podzemna voda, pritisci na kvantitet i kvalitet, menadžment podzemnih vodnih resursa

  • 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
    ... depths: 200 – 2,000 m Target coal seam — UCG reactor Figure 1. Underground coal gasification |1] The UCG implies a controlled, quiet and incomplete onsite combustion, without any personnel involved, and equipment placed underground. Also, there is no need for investments in expensive process equipment ...
    ... Conference EEI 2018., Belgrade, Serbia, 2018, pp. 65-73 5] Greeg, D. W., et. al.. Underground Coal Gasification, 4merican Institute of Chemical Engineers, 24 (1978), 5, pp. 753-781 6| Burton,E. F. Best Practices in Underground Coal Gasification, Lawrence Livermore National Laborato- ry, Livermore, Cal ...
    ... 50000 m3 of gas/h. [7, 8, 10, 11-13]. For the assumed UCG exploitation field, fig. 5, the Pilot Plant (with thickness of the coal layer h = 6 m; p,= 1.3 t/mš) needs to be pro- cessed by gasification: 25 m 75m Figure 6. Exploitation Pilot Plant field for O, =75-50·:6·:1.3=29250tofcoal (3) ...

  • Towards a Mining Equipment Ontology

    Ranka Stanković, Ivan Obradović, Olivera Kitanović, Ljiljana Kolonja (2012)
    ... purpose. For example, controlled dictionaries can be derived from RudOnto for the area of Geostatistics, Mine safety, Mineral resource exploitation, Petroleum exploitation or Mining equipment. The structure of RudOnto can be described by an UML (Unified Modeling Language) model, as depicted in Figure ...
    ... the RudOnto is for production of appropriate terminological resources in sub-fields of mining engineering, such as, planning and management of exploitation, mine safety or mining equipment management. Such terminological resource have successfully been generated for the FMG e-learning platform Moodle ...
    ... through specialization by several classes, which provide for more specific terminological resources, for example, for planning and management of exploitation, mine safety or mining equipment management. Within this paper we will go into further detail only for the part of the model pertaining to mining ...

  • Mesozoic carbonate rocks in Serbia used as dimension stone

    Vesna Matović, Tijana Vojnović Ćalić (2016)
    The building industry in Serbia uses, to a great extent, imported natural stone for architectural purposes. The significance of local deposits, particularly limestones, is not adequately perceived despite the country’s abundance of these valuable resources. Therefore, this study focuses on Serbia’s Mesozoic carbonate rocks, specifically on the deposits of four selected quarries: Klisura, Skrzut, Struganik, and Tisnica. The quality and prospects of the application of these limestones has not yet been the subject of a detailed, comprehensive investigation. Therefore, ...
    Ukrasni kamen, Mezozoik, Krečnjak, Srbija, Petrografija, Fizičko-mehanička svojstva
    ... of 50% 60%. Limestone exploitation is performed along additional primary surfaces of mechanical discontinuity (bedding planes), whereas secondary surfaces—vertical tension fractures perpendicular to the bedding with a steep dip (80%90%—adversely affect the exploitation, reducing the usable ...
    ... corre- sponding to Urgonian facies. Flowing in a N-S direction, the river Tisnica splits the deposit in two (Fig. 1d). The exploitation takes place at a few exploitation levels on both sides of the riverbed covering an area of approximately 0.12 km? (Živković and Paunović 2000). Materials and ...
    ... cladding and paving, whereas the occurrence of bedding and occasional tectonic fissures (fractures) is considered to be a limiting factor of exploitation. Keywords Dimension stone · Mesozoic · Limestone · Serbia · Petrography · Physico-mechanical properties Introduction Stone was and still ...

  • Application of Project Management Process on Environmental Management System Improvement in Mining-Energy Complexes

    Jelena Malenović Nikolić, Dejan Vasović , Ivana Filipović , Stevan Mušicki, Ivica Ristović (2016)
    menadžment, rudrastvo i energetski kompleksi, okruženje, održivi razvoj, mrežno planiranje
    ... losses 1 18–22 26 Analyzing the annual level of coal exploitation 3 6–19 27 Data analyzing on GDP per unit of consumption and total emissions of carbon dioxide per GDP unit 1 19–22 28 Analyzing and evaluating harmful consequences of coal exploitation and coal combustion 1 20–23 29 Creating amendment ...
    ... Table 1. Indicators of coal consumption. Topic Indicator of Causes Indicator of Conditions Indicators of Response Energy use Level of annual coal exploitation Convert primary coal energy into secondary energy Share of lignite use compared to other types of coal Rational consumption of coal reserves Energy ...
    ... natural resources [13]. Environmental and economic benefits of respecting the principle of sustainable development are reflected in the rational exploitation of natural resources, preservation of the soil humus layer, and rehabilitation of degraded soils [14]. In order to reduce emissions of particulate ...

  • WebGIS Cadastre of Abandoned Mines in Autonomous Province of Vojvodina

    Ranka Stanković, Nikola Vulović, Nikola Lilić, Ivan Obradović, Radule Tošović, Milica Pešić-Georgiadis (2015)
    ... facilities consist of a name, place, municipality, district and site address. Object type is selected from the list of provided terms: open pit, underground mine, processing, waste deposit, maintenance workshop, other facility. Data on cadastral parcel or parcels and the titleholder are entered if this ...
    ... facilities." In the mining waste fields cadastre data are entered on the limits of the mining waste field, on the carrier of exploration and/or exploitation or economic entity that produces mining waste, on the economic entity which is the operator of mining waste, on the characterization and ca ...
    ... the requirements in developing the new system was to integrate it with the existing GIS application GeolIEP for management of exploration and exploitation permits and works in the mineral resources field. GeolIEP represents a basis for archiving and efficient handling of vector, raster and related ...

  • 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

  • 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

  • Evaluation And Perspectives Of Underground Coal Mines In Serbia

    Vladimir Milisavljević, Milena Lekić, Ivica Ristović, Vojin Čokorilo, Aleksandar Cvjetić (2017)
    ... 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 Company for Underground Coal Exploitation (PCUCE) is just around 0.6 Mtpa, making their contribution to the energy sector quite insignificant. It should ...
    ... cokorilo@rgf.bg.ac.rs; aleksandar.cvjetic@rgf.bg.ac.rs Summary: This paper provides analysis of mines operating in Public Company for Underground Coal Exploitation (PCUCE), which is in restructuring process in excess of 10 years. Evaluation of these mines included analysis of performance and development ...
    ... 0715 8 Senjski rudnik 0.0699 9 Bogovina 0.0687 10 Vrška Čuka 0.0682 11 Jarando 0.0624 Conclusion Public Company for Underground Coal Exploitation operates 8 mines and one company working as a contractor at other mines. AHP analysis, based on technical criteria, identified two groups ...

  • Development Of The Serbian Geological Resources Portal

    Ranka Stanković, Jelena Prodanović, Olivera Kitanović, Velizar Nikolić (2011)
    ... rs/Tara (Fig. 2) and the Map of exploration and exploitation permits in Serbia (STANKOVIĆ et al., 2010), available at http://geoliss.ekoplan.gov.rs/geoliep. GeolIEP is a sub- system of GeoISS which deals with keeping track of exploration and exploitation permits and works in the mineral resources field ...
    ... information system of the National park Djerdap, DRAGIŠIĆ, Monitoring groundwater resources of Serbia: Drafting the map of the vulnerability of underground water resources of Serbia, 2007-2011. (together with the Institute for water management “Jaroslav Cerni”), STEVANOVIĆ, Z. 2009., Translation of ...
    ... several complex forms for searching cata- logues: projects, archive documentation and bibliog- raphy, documentation of the funds and research- exploitation permits for water and solid mineral resources10. The above-mentioned searches were derived from the basic model which is based on mul- tiple entry ...

  • Failure Estimation of the Majdanpek Open Pit East Face Based on Inverse Velocity Model

    Miloš Marjanović, Stefan Milanović, Nikola Simić, Lazar Kričak (2024)
    The Majdanpek open pit mine south district is currently active mining prospect of copper ore exploitation in eastern Serbia. Its depth is approaching the termination depth and occurrences of large-scale instabilities and global instability of the final pit slope is possible. These can generate catastrophic mass movement inside an area that encloses a regional road route and the Pek River bed which is channelled along the outer contour of the pit. The displacements that were noted in early 2023, in the ...
    displacement, survey, inverse velocity, open pit

  • Stability analysis on slope PK dacite Ceramide

    Vladimir Čebašek, Veljko Rupar, Vladimir Ivoš, Vladimir Petković (2018)
    Safe surface mining exploitation of minerals is possibile only if stable bench and overall slopes in the open pit are construct. In order to to construct stable open pit slopes, it is necessary to carry out certain physical and mechanical laboratry testing of mineral raw materials in order to determine the geomechnical calculating parameters. These calculating parameters represent the base ground for performing slopes analyses and the open pit design. In this paper, an stability analysis of benches and ...
    dacite, slope stability, surface mining

  • 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)
    Lignit, Gasovi sa efektom staklene bašte, Ugljen dioksid, Metan, Azotni oksid
    ... an important gap in the knowledge that needs to be addressed. The available projections for GHG emissions from closed mines mainly concern underground exploitation. The estimates are based on the current methane bearing capacity and apply Langmuir equa- tions to quantify gas desorption (e.g., Kholod et ...
    ... of Serbia, 2020). In Slovenia, samples were obtained from the country's only working coal mine Velenje; a mine which uniquely employs the underground exploitation method. 2.2. Geological settings of the sampled deposits 2.2.1. Poland The majority of Poland's territory belongs to the European Pale ...
    ... ranged from ~0 to 66.75 nmol g drymass-1 d-1 (Fig. 5b). It should be noted that among the analysed mines, Velenje is the only one carrying out underground exploitation and therefore the high methane forma- tion in the VLN-W2 lignitemay be due to the lower exposure to oxygen conditions compared to those e ...

  • Implementataion of the modern technologies in order to control the drilling an blasting works

    Miljan Gomilanović, Stefan Milanović, Nikola Stanić, Aleksandar Doderović, Nikola Simić (2018)
    U ovom radu prikazanе su mogućnosti primene savremenih tehnologija u oblasti bušenja i miniranja pri površinskoj eksploataciji ležišta mineralnih sirovina, problemi koji se javljaju prilikom izvođenja radova, kao i moguća rešenja i prednosti primene ovih tehnologija.
    bušenje, miniranje, dron

  • Geomechnical research for the new bucket wheel excavator testing at Open pit “Filijala”

    Vladimir Čebašek, Nebojša Gojković, Veljko Rupar, Miodrag Pribićević (2020)
    Since 1976 cement marl excavation at open-pit mine „Filijala” is carried out by continuous exploitation technology using bucket wheel excavator SH 400 manufactured by Orenstein und Koppel (O & K) company. Due to the bucket wheel excavator time-worn and high operating cost it was necessary to replace it with new one. In order to test the new bucket wheel excavator and prove its capacity a testing zone was defined as test block for excavation, in which the bucket wheel ...
    отпор на копање, лапорац, роторни багер

  • Razvoj ARCGIS geobaze površinskog kopa korišćenjem UML CASE alata

    Aleksandra Tomašević, Ljiljana Kolonja, Ivan Obradović, Ranka Stanković, Olivera Kitanović (2012)
    ... Of An Open Pit Arcgis Geodatabase | Aleksandra Tomašević, Ljiljana Kolonja, Ivan Obradović, Ranka Stanković, Olivera Kitanović | Podzemni radovi;Underground Mining Еngineering | 2012 | | http://dr.rgf.bg.ac.rs/s/repo/item/0002525 Дигитални репозиторијум Рударско-геолошког факултета Универзитета у Београду ...
    ... active and prospective open pits, model the geology and the terrain, estimate the reserves, plan the yearly production, monitor statistical data on exploitation costs, monitor the position and availability of mining equipment (excavators, conveyor belts, trucks, etc.), the state of mining objects, works ...
    ... spatial queries such as: “Which boreholes are at a distance of 50 meters from the L1 profile line?”, “Which objects are in the area planned for exploitation in 2016?“, „Which boreholes are in the area that is to be excavated by the end of the year?“ and the like. Namely, relations between objects ...

  • Long-term planning methodology for improving wood biomass utilization

    Vladimir Vukašinović, Dušan Gordić, Marija Živković, Davor Koncalović, Dubravka Živković (2019)
    The insufficiently developed forest management system is often followed by undeveloped forest resources supply chain and insufficient institutional support. These cause inefficient usage of fuel-wood as well as huge amounts of unused forest residues. In order to achieve optimal and long-term sustainable utilisation of biomass, an original methodology based on the interaction of mathematical optimization and backcasting approach has been developed. Mathematical optimization is used for both generation and consideration of techno-economic parameters of the forest biomass supply chain. ...
    Long-term planning methodology, Forest biomass, MINLP, Backcasting

  • 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

  • Projection of SO2 emissions in coal power plants in Serbia

    Aleksandar Madžarević, Predrag Jovančić, Stevan Đenadić, Filip Miletić, Miodrag Ristović, Miroslav Crnogorac (2023)
    The production of electricity in the countries of South-Eastern Europe (SEE) was mainly related to the use of coal, predominantly lignite. The total installed capacity of thermal power plants using coal in these seven countries is 17.813 MW, distributed in 31 thermoblocks. The mentioned plants are the dominant pollutant emitters in all observed countries. Data on the largest emitters in the countries of the European Union and a comparison with SEE countries were collected. The calculation of emissions of ...
    енергeтика, емисије, СО2, угаљ, електране
    ... countries with a special Jocus on SEE countries. The projections of future SOx emissions from new wells in parts of surface mining intended Jor exploitation was given. Keywords: energy, emissions, SO», coal, power plants 1. INTRODUCTION Reducing emissions of pollutants and gases from coal-fired ...
    ... production [keSOx/MWh] 11,63 0,70 3. PROJECTION OF SO; EMISSIONS By studying the data on the amount of sulfur in the coal seam, the expected exploitation of coal in the coming period, as well as the operation of the desulfurization system, a projection of SO» emissions in the period up to 2040 was ...

  • Novel Methods in Multiple Criteria Decision-Making Process (MCRAT and RAPS)—Application in the Mining Industry

    Katarina Urošević, Zoran Gligorić, Igor MIljanović, Čedomir Beljić, Miloš Gligorić (2021)
    Multiple criteria decision making (MCDM) is a supporting tool which is widely spread in different areas of science and industry. Many researchers have confirmed that MCDM methods can be useful for selecting the best solution in many different problems. In this paper, two novel methods are presented and applied on existing decision-making processes in the mining industry. The first method is multiple criteria ranking by alternative trace (MCRAT) and the second is ranking alternatives by perimeter similarity (RAPS). These ...
    višekriterijumsko odlučivanje, nove metode, rudarstvo, šeme miniranja