Diseño de explotación a cielo abierto de las calizas de Chuwitayo - Chiguaza

Abstract

The following design work exploitation Opencast limestones of Chuwitayo – Chiguaza is a request from the community sector to have a better mineral exploitation, therefore we proceeded to the stage of prospecting the area in order to recognize and take data to allow a better description of the deposit. Making data for the description of the rock mass it is done by index cards to keep track and at the same time able to make a comparison the type of work massif. Later, with the data collected rock type is determined by the method of the index Q, which by using tables allows the classification of the rock, determining it as GOOD, implying stability presented. The desing of the operational factors established banks up to 6 meters with the objective of not making an envelope work fot the excavator arm, the angle of slope is 80 degrees since the place have been observed structures lines that reach 90 degrees to have an almost parallel to avoid having an unnecessary expense in the construction angle. The design of exploitation is proposed a technically feasible because with an initial investment of 821,776.09$ product of the acquisition of equipment and personnel employed for the work of exploitation to take place, it could recover the investment through a projection to 5 years determines a NPV ( Net Present Value ) of $ 1629.246 dollars with an IRR (internal rate of return ) of 71.22% Keywords: Rock mass, index, banks down, blasting, drilling