Resumo

NAVARRO TORRES, Vidal Felix. Recuperación óptima de menas de manganeso por cámaras y pilares usando análisis numérico en 3D. REV. MAMYM [online]. 2020, vol.5, n.2, pp.19-27. ISSN 2519-5352.

Abstract In the room and pillar method, maximum ore recovery obtained by the acceptable safety factor, compatible of the depth, geometry of the room and pillars, the goemechanical rock mass properties surrounding mining opening and overlying area. Although traditional methods allow some support, but do not allow an exhaustive interpretation and optimum design. For this reason, we have adopted the 3D numerical model and calibrate by in situ database for obtain the optimal geometry that allows to get the maximum ore recovery compatible of acceptable safety factor. The case study corresponds to the manganese room and pillar Brazilian Urucum mine, which allowed for a 44% to 80% o re recovery.

Palavras-chave : room and pillar; maximum ore recovery; acceptable safety factor.

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