Diseño de mallas de perforación y voladura basado en clasificaciones geomecánicas para optimizar el consumo de sustancia explosivo en las galerías del nivel 2 ½ del Proyecto Minero El Inca

Abstract

In the present investigation the "Design of perforation and blasting mesh based on geomechanical classifications, in the level 2 ½ gallery of the mining project Incamining" is carried out. The process of survey and analysis of geomechanical data allowed us to obtain the constant "c" of the rock and adapt the design to our rock mass. This research contributes a consecutive geomechanical methodology to improve the load design according to the load. From geo-mechanically classifying the rock mass in the development gallery, using the RMR 89 method, we proceed to work with the GSI geological resistance index, which helps us with the calculation of geomechanical parameters of cohesion and friction more in line with the taking of the account in the depths of the excavation, so you can use the Ashby geomechanical model which takes into account the density of the rock, the friction angle of the rock mass and the RQD, which allows to obtain the specific power of the explosive and to be able to work with the Langefors model to obtain a constant "c" of the rock in function of the CE, indispensable in the design calculations of the present study.