Diseño de excavación en la mina “El Pique”, mediante profundización inclinada, ubicada en el barrio El Tablón, cantón Portovelo, operado por la compañía OROCONCENT S.A.

Abstract

The aim of this technical project was to carry out an excavation design to deepen the El Pique mine of the company OROCONCET S.A. An applied research was used as a methodology, from documentary research on the geological characteristics of the area and the rock properties inside the mine, as well as the geometric characterization to define the quality of the rock. This information and the field research in which the inputs and materials that the company has in the extraction area were identified, determined the measures and type of cross section of the inclined shaft. An excavation design was carried out in relation to the operating cycles and based on the cost analysis. The geological area corresponds to the Portovelo Unit with a predominance of andesite type rock with a quality of 71, which is the quality of the massif is good. Considering the quality of the rock, a rectangular cross-section pit was chosen, which allows ergonomics for the worker and makes better use of the space for the mobilization of machinery; the different operating cycles were established in relation to the analysis of direct and indirect costs, establishing three cycles: drilling and blasting; transport and hoisting of material; and ventilation and drainage. A value per meter of advance of $ 665.86 was determined. The use of explosives with higher breaking power and efficient control of the detonation radius is recommended to avoid rock instability. The use of all safety equipment and rotating schedules to maintain the health of the human talent were involved in the work.