Plan de cierre parcial del frente norte de la concesión minera “Guadalupe Acumulada” código 290417 ubicada en el sector Huertos familiares Caminos al sol, cantón Riobamba, provincia de Chimborazo.

Abstract

The technical project aims to make a technical design proposal for the partial closure of a quarry of aggregate and stone construction materials. The partial closure plan of the mining concession "Guadalupe Acumulada" code 290417 will be carried out in the north front by parameters such as the technical design where geological, geotechnical and physical-mechanical parameters of the rock mass, its geometric design of the settlement slope, its volume of removal material and its corrective proposal and slope restoration will be determined. The anti-technical exploitation design that has been in place for several years has caused slope instability, negative environmental and social impacts. In the technical design for the partial closure of the north face, it is proposed to present an adequate design where it was determined: The cutting method will be done by descending banks with a maximum depth of 38 m in a distance of 170.55 m from the N-E to the S-E face, with bank heights of 8 m and a safety berm width of 5.5 m. The settlement slope angle is 8.5 m, with a maximum depth of 38 m and a safety berm width of 5.5 m. The settlement slope angle is 60° on each bench with a working slope angle of 38° total bench, the quarry extraction advance will be from N-E with a total removal material volume of 116465.805 m3 in an area of approximately 19357 m2 with a safety factor of 1. 552140 by the Bishop method, 1.440640 by the Janbu method and 1.544180 by the GLE method, will be remediated and reforested with native species such as eucalyptus, cabuyo, sigse, pine and burillo. The corrective proposal and slope restoration are governed and controlled by the environmental management plan and mining development plan, as well as its closure plan and definitive operations.