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    Effect of blast design parameters on fragmentation - An application of Kuz-Ram model

    Access Status
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    Authors
    Biswas, R.
    Ghosh, Apurna
    Date
    2012
    Type
    Journal Article
    
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    Citation
    Biswas, R. and Ghosh, A. 2012. Effect of blast design parameters on fragmentation - An application of Kuz-Ram model. Journal of Mines, Metals and Fuels. 60 (9-10): pp. 206-215.
    Source Title
    Journal of Mines, Metals and Fuels
    ISSN
    0022-2755
    School
    Dept of Mining Eng & Metallurgical Eng
    URI
    http://hdl.handle.net/20.500.11937/59284
    Collection
    • Curtin Research Publications
    Abstract

    The most important aspect of blasting is fragmentation. The fragmentation has a direct effect on the cost of loading, hauling and crushing operations. In the past many technologies have been used to predict and measure the rock fragmentation like different blasting models, image analysis etc. Rock fragmentation depends on the explosive parameters; rock condition such as rock mass properties, local geological condition, in situ fracturing and blast design parameters. This paper identifies the relevance of Kuz-ram model on mean fragment size estimation and the effect of charge factor and rock properties on it. It also discusses usefulness of Kuz-Ram model on deciding blast design parameters under a given condition when mean fragment size and charge factor are to be maintained. In this study with drill hole diameter 250 mm the value of uniformity index obtained 0.65 which indicates the dust and boulder situation and most suitable value of uniformity index 0.75 is obtained for the blast hole diameters 125 mm and 165 mm. It is also observed that the maximum boulder size increases rapidly above the blast hole diameter 125 mm.

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