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      Recuperación óptima de menas de manganeso por cámaras y pilares usando análisis numérico en 3D Translated title: Optimal recovery of manganese ore in room and pillar mining using 3D numerical analysis

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          Abstract

          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.

          Translated abstract

          Resumen En el método de cámara y pilares, la máxima recuperación de mineral es obtenida para un factor de seguridad aceptable, compatible con la profundidad, geometría de las cámaras y pilares, las propiedades goemecánicas del macizo rocoso que rodean la zona de explotación minera y el área supra yacente. Aunque los métodos tradicionales permiten cierto apoyo, no permiten una interpretación exhaustiva y un diseño óptimo. Por este motivo, fue adoptado el modelo numérico 3D y calibrado mediante base de datos in situ para obtener la geometría óptima que permita obtener la máxima recuperación de mineral compatible con un factor de seguridad aceptable. El caso de estudio corresponde a la mina brasileña que usa cámaras y pilares de la mina de manganeso de Urucum, que permitió una recuperación de mineral de 88% cuando inicialmente era de 44%.

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          Most cited references9

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          Stope and pillar design for the Elliot Lake uranium mines

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            Comparative stability analyses of traditional and selective room-and-pillar mining techniques for sub-horizontal tungsten veins

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              Hoek-Brown Failure Criterium

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                Author and article information

                Journal
                mamym
                Revista de Medio Ambiente y Mineria
                REV. MAMYM
                EDITORIAL UNIVERSITARIA de la Universidad Técnica de Oruro. (Oruro, , Bolivia )
                2519-5352
                December 2020
                : 5
                : 2
                : 19-27
                Affiliations
                [01] orgnameInstituo Tecnológico VALE vidal.torres@ 123456itv.org
                Article
                S2519-53522020000200003 S2519-5352(20)00500200003
                7f9d18a9-ece8-488d-9948-249e75fdd1b5

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 30 September 2020
                : 23 October 2020
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 9, Pages: 9
                Product

                SciELO Bolivia

                Categories
                ARTICLES

                acceptable safety factor,maximum ore recovery,room and pillar,factor de seguridad aceptable,recuperación máxima,Cámaras y pilares

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