Design of an economically feasible support for the replacement of pillars in Providencia Mine, Antioquia - Stage 1
Pillar replacement in mining works is a technique of using the pillars that are part of the support structures having a high degree of mineralization, which attracts economic interest. The technique consists of replacing the support pillars of the mineral matrix that contain appreciable and benefici...
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| Format: | Online |
| Language: | eng |
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Universidad Pedagógica y Tecnológica de Colombia
2019
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| Online Access: | https://revistas.uptc.edu.co/index.php/ingenieria/article/view/9199 |
| _version_ | 1801706096314810368 |
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| author | Montaño-Chinchilla, Claudia Yasmin Molina-Escobar, Jorge Martin Suarez-Burgoa, Ludger Oswaldo Ceballos-Guerra, Elkin de Jesús |
| author_facet | Montaño-Chinchilla, Claudia Yasmin Molina-Escobar, Jorge Martin Suarez-Burgoa, Ludger Oswaldo Ceballos-Guerra, Elkin de Jesús |
| author_sort | Montaño-Chinchilla, Claudia Yasmin |
| collection | OJS |
| description | Pillar replacement in mining works is a technique of using the pillars that are part of the support structures having a high degree of mineralization, which attracts economic interest. The technique consists of replacing the support pillars of the mineral matrix that contain appreciable and beneficial quantities of mineral by artificial pillars that provide geomechanical structure to the operations, generating support and safety benefits greater than or equal to those provided by the original pillars and thus maximizing the intrinsic economic value of the available rock in the operation. Based on the literature regarding design techniques for the assembly of pillars used in underground gold mining, daily and continuous field inspections were conducted for two months, taking the necessary data for the proposed design following ISRM standards for data collection. The proposed pillars must consider a set of operational economic requirements and meet the geomechanical performance required to guarantee the safety and stability of the site. The design consisted of a combination of two types of pillars, one of concrete and one of mesh, cables and sterile material (granodiorite and dyke). The measurements consisted of RMR determination, the dimensions of the current pillars, and the geomechanical condition using detailed scanlines. Subsequently, the information was refined and correlated, and the degree of fracture and safety factor of the original pillars versus those proposed in the new designs were calculated. As a result, the optimal design for the construction of the replacement pillars should have dimensions of 2 x 1.7 x 1.7 meters, achieving a safety factor of 1.36, complying with the geomechanical requirements of safety and stability and yielding a profit of 405 % as a cost-benefit ratio in replacing the original pillars by those proposed in the design; the sterile material and mesh pillars would have dimensions of 2 x 2 x 2 meters. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-9199 |
| institution | Revista Facultad de Ingeniería |
| language | eng |
| publishDate | 2019 |
| publisher | Universidad Pedagógica y Tecnológica de Colombia |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-91992021-07-13T02:25:54Z Design of an economically feasible support for the replacement of pillars in Providencia Mine, Antioquia - Stage 1 Diseño de sostenimiento económicamente factible para el reemplazo de pilares en Mina Providencia, Antioquia - Etapa 1 Montaño-Chinchilla, Claudia Yasmin Molina-Escobar, Jorge Martin Suarez-Burgoa, Ludger Oswaldo Ceballos-Guerra, Elkin de Jesús gold mining pillar rock safety minería oro pilar roca seguridad Pillar replacement in mining works is a technique of using the pillars that are part of the support structures having a high degree of mineralization, which attracts economic interest. The technique consists of replacing the support pillars of the mineral matrix that contain appreciable and beneficial quantities of mineral by artificial pillars that provide geomechanical structure to the operations, generating support and safety benefits greater than or equal to those provided by the original pillars and thus maximizing the intrinsic economic value of the available rock in the operation. Based on the literature regarding design techniques for the assembly of pillars used in underground gold mining, daily and continuous field inspections were conducted for two months, taking the necessary data for the proposed design following ISRM standards for data collection. The proposed pillars must consider a set of operational economic requirements and meet the geomechanical performance required to guarantee the safety and stability of the site. The design consisted of a combination of two types of pillars, one of concrete and one of mesh, cables and sterile material (granodiorite and dyke). The measurements consisted of RMR determination, the dimensions of the current pillars, and the geomechanical condition using detailed scanlines. Subsequently, the information was refined and correlated, and the degree of fracture and safety factor of the original pillars versus those proposed in the new designs were calculated. As a result, the optimal design for the construction of the replacement pillars should have dimensions of 2 x 1.7 x 1.7 meters, achieving a safety factor of 1.36, complying with the geomechanical requirements of safety and stability and yielding a profit of 405 % as a cost-benefit ratio in replacing the original pillars by those proposed in the design; the sterile material and mesh pillars would have dimensions of 2 x 2 x 2 meters. El remplazo de pilares en las faenas mineras es una técnica de aprovechamiento de los pilares que hacen parte de las estructuras de sostenimiento y que presentan un alto grado de mineralización de interés. La técnica consiste en el reemplazo de pilares de sostenimiento de roca propia del macizo y que además contiene cantidades apreciables y beneficiables de mineral, por unos pilares artificiales que proveen de la operación, prestaciones geomecánicas de sostenimiento y de seguridad mayores o iguales a las prestaciones entregadas por los pilares originales, maximizando así la captura de valores económicos embebidos en la roca presente de la operación. Partiendo de la recopilación literaria sobre la técnica de diseño para el armado de pilares utilizados en minería aurífera subterránea, se realizaron inspecciones de campo diarias y continuas durante dos meses, tomando los datos requeridos para el diseño, siguiendo estándares ISRM para la toma de datos. Los pilares propuestos deben responder a un conjunto de requerimientos económicos operacionales, y a las prestaciones geomecánicas requeridas para la garantía de la seguridad y de la estabilidad de la zona. Se planea diseñar una combinación de dos tipos de pilares, uno de concreto y otro con malla, cables y material estéril (granodiorita y dique); para esto se hicieron mediciones de: RMR, dimensiones de pilares actuales y estado geomecánico mediante líneas de rastreo. Posteriormente se depuró y correlacionó la información, realizando los cálculos requeridos para obtener el nivel de fracturamiento y factor de seguridad de los pilares originales versus los propuestos en los nuevos diseños. Como resultado se obtuvo que el diseño óptimo para la construcción de los pilares reemplazantes debe tener una dimensión de 2 x 1.7 x 1.7 metros. Con este diseño se alcanza un factor de seguridad de 1.36, cumpliendo con el requerimiento geomecánico de seguridad y de estabilidad y además obteniendo un porcentaje de ganancia de 405 % como relación costo de beneficio en el remplazo de los pilares por los propuestos en el diseño; los pilares de malla y estéril tendrían 2 x 2 x 2 metros. Universidad Pedagógica y Tecnológica de Colombia 2019-04-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research investigación application/pdf application/xml https://revistas.uptc.edu.co/index.php/ingenieria/article/view/9199 10.19053/01211129.v28.n51.2019.9199 Revista Facultad de Ingeniería; Vol. 28 No. 51 (2019); 89-104 Revista Facultad de Ingeniería; Vol. 28 Núm. 51 (2019); 89-104 2357-5328 0121-1129 eng https://revistas.uptc.edu.co/index.php/ingenieria/article/view/9199/7653 https://revistas.uptc.edu.co/index.php/ingenieria/article/view/9199/7903 https://revistas.uptc.edu.co/index.php/ingenieria/article/view/9199/7916 N.A. N.A. |
| spellingShingle | gold mining pillar rock safety minería oro pilar roca seguridad Montaño-Chinchilla, Claudia Yasmin Molina-Escobar, Jorge Martin Suarez-Burgoa, Ludger Oswaldo Ceballos-Guerra, Elkin de Jesús Design of an economically feasible support for the replacement of pillars in Providencia Mine, Antioquia - Stage 1 |
| title | Design of an economically feasible support for the replacement of pillars in Providencia Mine, Antioquia - Stage 1 |
| title_alt | Diseño de sostenimiento económicamente factible para el reemplazo de pilares en Mina Providencia, Antioquia - Etapa 1 |
| title_full | Design of an economically feasible support for the replacement of pillars in Providencia Mine, Antioquia - Stage 1 |
| title_fullStr | Design of an economically feasible support for the replacement of pillars in Providencia Mine, Antioquia - Stage 1 |
| title_full_unstemmed | Design of an economically feasible support for the replacement of pillars in Providencia Mine, Antioquia - Stage 1 |
| title_short | Design of an economically feasible support for the replacement of pillars in Providencia Mine, Antioquia - Stage 1 |
| title_sort | design of an economically feasible support for the replacement of pillars in providencia mine antioquia stage 1 |
| topic | gold mining pillar rock safety minería oro pilar roca seguridad |
| topic_facet | gold mining pillar rock safety minería oro pilar roca seguridad |
| url | https://revistas.uptc.edu.co/index.php/ingenieria/article/view/9199 |
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