This thesis addresses one of the factors that are taken into account within the phase of study and execution of a project, the quality characteristics of the rock mass on which an underground excavation will be carried out, normally the geological interpretation of the faults is made , gaps and dikes that are raised by the geology area. Within the works of expansion of reserves executed by any mining company, drillings are made, which provide information on the structures present in the rock mass and if they are economically profitable, the proposal is to make use of the recovered witnesses to obtain the necessary information such as RQD, compressive strength and with the theoretical models proposed by Bienawsky, Bartón and others, to be able to relate it to the quality of the rock mass and through it to develop a geomechanical model making use of statistical and geostatistical techniqu...