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Упит dcterms_subject_txt:rock blasting

86 items

  • Development of an integrated model for open-pit-mine discontinuous haulage system optimization

    Miodrag Čelebić, Dragoljub Bajić, Sanja Bajić, Mirjana Banković, Duško Torbica, Aleksej Milošević , Dejan Stevanović (2024)
    equipment selection, mine mechanization, expert judgment, linguistic variables, MCDM, FAHP

  • Rock slope stability analysis under Hoek–Brown failure criterion with different flow rules

    Svetlana Melentijević, Zoran Berisavljević, Dušan Berisavljević, Claudio Olalla Marañón (2024)
    The stability analysis of homogeneous rock slope following the Hoek–Brown failure criterion under the hypothesis of different flow rules is performed based on limit equilibrium and finite element methods. The applied failure criterion is the generalized Hoek–Brown that can be introduced as a shear/normal function in analysis applying different flow rules. The results are compared with those obtained by the application of equivalent shear strength parameters of the Mohr–Coulomb criterion, considering that this is still the most widely used ...
    Kružna klizna površ, Huk-Braunov kriterijum loma, Kriterijum popuštanja, Smičuća/normalna funkcija, Nivo napona, Verovatnoća i parametarska analiza

  • Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija

    Srđan D. Kostić (2013-11-04)
    U ovoj disertaciji, cilj istraživanja bio je određivanje dinamičkih svojstava potresaizazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija.Analiza potresa izvedena je sa dva aspekta – u prvom delu istraživanja izučavane suvremenske serije oscilovanja tla za vreme potresa, a u drugom delu vršena je analizastabilnosti fenomenološkog Baridž-Knopof modela bloka sa oprugom. Vremenske serijeoscilovanja tla proučavane su primenom postupka analize surogat podataka, kao ikorišćenjem metoda analize nelinearnih vremenskih serija (primena teoreme orazvijanju skalarne vremenske serije). Analiza vremenskih serija izvedena je ...
    potres, naponsko stanje, podzemne prostorije, bifurkacije, vremenskaserija, deterministički haos, stohastičnost, perturbacije, vremensko kašnjenje, jačina trenja
    ... width, depth, mineral composition, etc. Thirdly, periodic perturbation of parameter values mimics the mining effect (mining equipment vibrations, blasting effects, etc.). The performed analysis shows that, by including the time delay, models under study show deterministically chaotic behavior, which ...
    ... complex dynamical behavior arises due to small amplitude perturbations, which corresponds well to the effect of mining (mining equipment vibrations, blasting effects, etc.). In the same time, perturbation frequencies are similar to the frequency of block oscillation in an unperturbed state. In other ...
    ... time delay, frictional strength SCIENTIFIC FIELD: Mining Engineering FIELD OF ACADEMIC EXPERTISE: Exploration of hard mineral resources and rock mechanics UDK number: 512.643:519.245/.856/.87:534:64:550.8:616.232 622.1//.261.2/.268.8/.273/.33/.83 624.075/.121.5/.131.55 (043.3) ...

  • Nelinearno dinamičko modelovanje potresa izazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija

    Srđan D. Kostić (2013-11-04)
    U ovoj disertaciji, cilj istraživanja bio je određivanje dinamičkih svojstava potresaizazvanih promenom naponskog stanja pri izradi horizontalnih podzemnih prostorija.Analiza potresa izvedena je sa dva aspekta – u prvom delu istraživanja izučavane suvremenske serije oscilovanja tla za vreme potresa, a u drugom delu vršena je analizastabilnosti fenomenološkog Baridž-Knopof modela bloka sa oprugom. Vremenske serijeoscilovanja tla proučavane su primenom postupka analize surogat podataka, kao ikorišćenjem metoda analize nelinearnih vremenskih serija (primena teoreme orazvijanju skalarne vremenske serije). Analiza vremenskih serija izvedena je ...
    potres, naponsko stanje, podzemne prostorije, bifurkacije, vremenskaserija, deterministički haos, stohastičnost, perturbacije, vremensko kašnjenje, jačina trenja
    ... width, depth, mineral composition, etc. Thirdly, periodic perturbation of parameter values mimics the mining effect (mining equipment vibrations, blasting effects, etc.). The performed analysis shows that, by including the time delay, models under study show deterministically chaotic behavior, which ...
    ... complex dynamical behavior arises due to small amplitude perturbations, which corresponds well to the effect of mining (mining equipment vibrations, blasting effects, etc.). In the same time, perturbation frequencies are similar to the frequency of block oscillation in an unperturbed state. In other ...
    ... time delay, frictional strength SCIENTIFIC FIELD: Mining Engineering FIELD OF ACADEMIC EXPERTISE: Exploration of hard mineral resources and rock mechanics UDK number: 512.643:519.245/.856/.87:534:64:550.8:616.232 622.1//.261.2/.268.8/.273/.33/.83 624.075/.121.5/.131.55 (043.3) ...

  • Modeliranje tehnoloških procesa u rudarstvu u uslovima nedovoljnosti podataka primenom teorije grubih skupova

    Zoran M. Štirbanović (2015-07-01)
    Rudarstvo, a u okviru njega i priprema mineralnih sirovina, se odlikuje složenošću tehnoloških procesa što je posledica velikog broja uticajnih parametara. Samim tim je potrebno biti veoma obazriv prilikom donošenja odluka u oblasti rudarstva. U cilju što efikasnijeg funkcionisanja procesa, moguće je primeniti različite metode koje služe za pojednostavljenje procesa odlučivanja. Jedna od takvih metoda jeste i teorija grubih skupova. Ona predstavlja relativno novu matematičku teoriju koja je pogodna za razumevanje nepreciznih i nepotpunih podataka kao i za otkrivanje ...
    rudarstvo, priprema mineralnih sirovina, teorija grubih skupova, višekriterijumsko odlučivanje, flotacijsko jalovište, flotacijski kolektor, flotaciona mašina
    ... Knowledge Discovery (Volume 1), Tianjin, China, 14-16 August, 2009, pp. 581–585. 69. F. Jiang, K. Zhou, H. Deng, X. Li, Y. Zhong, An Optimized Model for Blasting Parameters in Underground Mines' Deep-Hole Caving Based on Rough Set and Artificial Neural Network, Proceedings of Second International Symposium ...

  • Mineral Resources of Serbia: Environmental, Societal and Economic Challenges

    Vladimir Simić, Rade Jelenković, Dragana Životić (2019)
    ... • pollutants emitted into the atmosphere from thermal power plants; • the spread of dust and smoke into the atmosphere resulting from massive blasting carried out in quarries; Anthropogenic sources of air pollution involve combustion of fossil fuels (thermoelectric power plants, motor vehicles ...
    ... sporadic vein deposits of calcite. The reserves of carbonate rock for the requirements of metallurgy, chemical industry, production of lime, sugar, glass, paper, rubber, dyes, fillers, etc. (not counting the limestone used as aggregate rock) amount to about 120 Mt. Magnesite was a mineral of important ...
    ... host/parent rock. Placer deposits are also economically important. Dominant gemstones are silica minerals: chalcedony (chrysoprase, carnelian, bluish chalcedony etc.), jasper (picture, landscape, red etc.), common opal (dendritic, green, milky White etc.), silica masses (undivided), and quartz (rock crystal ...