Thesis METODOLOGÍA DE EVALUACIÓN TÉCNICO-ECONÓMICA PARA LA SELECCIÓN DE UNA TECNOLOGÍA DE TRANSPORTE ENTRE CORREA TRANSPORTADORA Y SISTEMA DE IZAJE PARA MINAS SUBTERRÁNEAS
Date
2020-08
Authors
FERNÁNDEZ HERRERA, NALDO
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Abstract
En minería subterránea, el sistema de transporte principal es de las que requiere los mayores niveles
de inversión. En este contexto la investigación se centra en dos de los sistemas de transporte
principal más utilizados en la actualidad, correspondientes a: sistema de izaje y correas
transportadoras. Ambos sistemas son utilizados para minería de gran productividad y a grandes
profundidades. Se realiza una comparación entre ambos sistemas mediante una evaluación técnicoeconómica
donde se estiman costos de inversión y de operación a lo largo de la vida útil de la mina,
luego se comparan los costos totales para poder determinar cuál de estos sistemas es el más
conveniente en términos económicos. Este análisis comparativo se realiza para distintos escenarios
de proyectos mineros nuevos, en los que se varia la profundidad y/o el ritmo de producción en cada
uno de ellos, considerando en total 20 escenarios. Con la evaluación técnico-económica recopilada de
cada escenario, se da paso a diseñar un ábaco de selección de uno de los sistemas de transporte
principal antes mencionados, el cual es expresado en forma gráfica. A grandes profundidades
(mayores a 550 metros) la alternativa de transporte más conveniente económicamente es el sistema
de izaje por sobre las correas transportadoras, mientras que, la correa transportadora será la opción
más conveniente a bajas profundidades (menores a 350 metros). El desarrollo de esta metodología
permite contar con un elemento de apoyo en estudios de ingeniería de perfil para el proceso de
selección de sistemas de transporte principal para un proyecto minero
In underground mining, the main transport system is one that requires the highest levels of investment. In this context, the research focuses on two of the most commonly used main transport systems at present, corresponding to: hoisting system and conveyor belts. Both systems are used for high productivity mining and great depths. A comparison is made between both systems through a technical-economic evaluation where investment and operating costs are estimated throughout life of the mine, then the total costs are compared to determine which of these systems is the most convenient in economic terms. This comparative analysis is carried out for different scenarios of new mining projects, in which the depth and/or the rate of production in each of them is varied, considering a total of 20 scenarios. With the technical-economic evaluation collected from each scenario, it is possible to design a selection abacus for one of the main transportation systems mentioned above, which is expressed in a graphic form. At great depths (greater than 550 meters) the most economically convenient transport alternative is the hoisting system over the conveyor belts, while the conveyor belt will be the most convenient option at low depths (less than 350 meters). The development of this methodology allows to have a support element in profile engineering studies for the selection process of the main transport system for a mining project
In underground mining, the main transport system is one that requires the highest levels of investment. In this context, the research focuses on two of the most commonly used main transport systems at present, corresponding to: hoisting system and conveyor belts. Both systems are used for high productivity mining and great depths. A comparison is made between both systems through a technical-economic evaluation where investment and operating costs are estimated throughout life of the mine, then the total costs are compared to determine which of these systems is the most convenient in economic terms. This comparative analysis is carried out for different scenarios of new mining projects, in which the depth and/or the rate of production in each of them is varied, considering a total of 20 scenarios. With the technical-economic evaluation collected from each scenario, it is possible to design a selection abacus for one of the main transportation systems mentioned above, which is expressed in a graphic form. At great depths (greater than 550 meters) the most economically convenient transport alternative is the hoisting system over the conveyor belts, while the conveyor belt will be the most convenient option at low depths (less than 350 meters). The development of this methodology allows to have a support element in profile engineering studies for the selection process of the main transport system for a mining project
Description
Keywords
MINERIA SUBTERRANEA , CORREAS TRANSPORTADORAS , IZAJE DE CARGA , OPERACIONES Y PLANIFICACIÓN
