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Curvas granulométricas como alternativa para la caracterización del material rocoso en minería

Abstract:

In mining projects, is important to determine certain parameters, such as the unconfined compressive strength (UCS) of the rock material, since it is fundamental for the use of geomechanical classifications, such as RMR or Q Index, which establish geometries for stability in quarries and fortification in underground mines, avoiding rock falls or landslides, guaranteeing the health of workers and protecting equipment. But, to know the UCS, it is necessary to send samples to the laboratory, which makes its evaluation tedious and expensive. This work introduces a proposal for the determination of this parameter, through a simple and straightforward sequence of mechanical processes. Once rock samples are obtained, prepare them, crush them, classify them and assess their UCS, a relationship is established between these parameters, avoiding permanently sending samples to the laboratory. This relationship is presented in a graphical way, easy to interpret, and proposes an equation, in order to obtain the parameter in an approximate way.