ABSTRACT
It is recommended to use Hoek and Brown’s fracture criteria to define the main major and minor stress relationship. The former will also be used to establish a relationship with Mohr-Coulomb’s criteria through the use of the ROCKLAB software that will define the parameters of shear strength, friction angle, and cohesion. The figure 8.1 shows a summary of geomechanical problems in simultaneous exploitation both open pit and underground at Michilla.
