Caracterización geológica y geotécnica en el área minera "El Corazón", para el diseño de una relavera

Abstract

The present investigation proposes: to make a geologic-geotechnical characterization in the Mining Area El Corazon, Garcia Moreno, Cotacachi Canton, province of Imbabura; for the design of a tailing. By means of bibliographic-investigation techniques, of field through Geophysics (vertical electric catheterization), geotechnical drilling, essays in situ (SPT, trials of permeability, etc.) and excavation of soil pits, with recovering of samples for afterwards analyses during the geo-mechanical properties of the soil. As a result, it was determined four geotechnical units that that go from plastic limes, limy sands till altered tuffs which are very compact. According to the analysis of taluses with the program Slide 5.0 for this type of lithology provides a factor of security more than or equal to 1,5 qualifying it as stable for the static conditions and sloped taluses 1H:1,5V. The cementation of the dams were made in the geotechnical unit four, for the favorable geo-mechanic that presents the design alternative that proposes account of two phases: to build pools of tailing obtaining a big capacity of storing with minimal volume of excavated material; the volume of the material of estimated exaction, would be equal to 45,648 cubic meters, part of this material will be used for the construction of nucleus of the dam and protect the shoulders of the same water down, where it will re vegetate with endemic plants. It was estimated that the capacity of storing of storing of both dams would be equal to 95,501.71 cubic meters considering that the plant of benefit would generate approximately 50 cubic meters of litter per day, the time life estimated of the tailing would be five years.