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Wyszukujesz frazę "ANFO" wg kryterium: Temat

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Influence of a Primer on the Velocity of Detonation of ANFO and Heavy ANFO Blends
    Autorzy:
    Žganec, S.
    Bohanek, V.
    Dobrilović, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/951497.pdf
    Data publikacji:
    2016
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    ANFO
    Heavy ANFO
    primer
    velocity of detonation
    Opis:
    ANFO is the most common explosive for civil use in the fields of mining and civil engineering. Some properties of ANFO, like poor water resistance, low density and low velocity of detonation can be improved by mixing ANFO with a certain percentage of an emulsion. These explosives are called Heavy ANFO blends. This paper presents a study of the influence of a primer on the velocity of detonation of ANFO and Heavy ANFO blends. Three types of primers were used for the initiation of the explosives and the velocity of detonation was measured in situ by a continuous method. Based on the results of these measurements, the relationship between the detonation velocity of the primer used and the detonation velocity of the primed explosive were established.
    Źródło:
    Central European Journal of Energetic Materials; 2016, 13, 3; 694-704
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of explosive charge temperature on the velocity of detonation of ANFO explosives
    Autorzy:
    Dobrilović, M.
    Bohanek, V.
    Žganec, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/358379.pdf
    Data publikacji:
    2014
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    ANFO
    temperature
    velocity of detonation
    Opis:
    ANFO is the most common explosive for civil use in the fields of mining and civil engineering. The effect of the explosive and the quantity of energy released by the detonation depends on the velocity of detonation. The influence on explosive performance of a large number of physical aspects of ANFO explosives and the conditions of initiation during blasting operations are mostly known, but the influence of the charge temperature on the velocity of detonation is not known. In order to quantify that influence, research on laboratory samples of smaller diameter and field samples of larger diameter, detonated in steel pipes, has been carried out. By processing and analysing the measured results the influence of charge temperature on the velocity of detonation of ANFO explosive has been determined.
    Źródło:
    Central European Journal of Energetic Materials; 2014, 11, 2; 191-197
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preliminary Detonation Study of Dry, Wet and Aluminised ANFO Using High-Speed Video
    Autorzy:
    Araos, Migue
    Onederra, Italo
    Powiązania:
    https://bibliotekanauki.pl/articles/358312.pdf
    Data publikacji:
    2019
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    ANFO
    detonation
    high-speed video
    aluminised ANFO
    nitrogen oxide fumes
    velocity of detonation
    non-ideal explosives
    Opis:
    ANFO is a well-known, reliable and safe commercial explosive. It has been around since the late 1950’s and its detonation properties are well characterized. In this study, the detonation process of dry, wet and aluminised ANFO, was recorded using two high-speed cameras with recording rates of 1,200 fps and 50,000 fps. The 1,200-fps footage allowed the observation of the post blast fumes (i.e. NOx) produced by ANFOs with different water contents. The 50,000-fps footage allowed the observation of the detonation area, gas expansion phase and the measurement of the velocity of detonation (VOD). The video footage also recorded a bright zone in front of the gases (longer than 50 mm). We assumed that a reaction is taking place in this zone, but it is difficult to be sure if this is the reaction zone or not as it is longer than previously reported reaction zone lengths. Analysis showed that ANFO detonates effectively for water contents of up to 9 wt.%, and more importantly, there is little variation in the VOD. As far as the expansion of gases is concerned, the ANFO-Al expansion rate appears to be different. In this mixture, the absence of NOx fumes could have been due to the expected higher temperatures produced by the burning of the aluminium additive as observed in the images recorded with the high-speed camera.
    Źródło:
    Central European Journal of Energetic Materials; 2019, 16, 2; 227-244
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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