Abstract
Mine haulage drifts are the arteries of a mine. They are used for the transportation of blasted orefrom the draw point to nearby ore pass or dumping point in deep underground mines. Thus, theymust be remained functional during their service life. Otherwise, their instability could lead toserious consequences such as injuries, delay of production and increased operational cost. Theobjective of this paper is to evaluate the performance stability of mine haulage drifts with respect tomining step adopting numerical modeling of analysis. A two-dimensional, elastoplastic, finitedifference code (FLAC 2D) is built for the purpose of this study. Haulage drift performance isevaluated using stability indicators and numerical modeling results are presented in termsdisplacement, stress and the extent of yield zones with espect to mining step.
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