Caracterización geomecánica del macizo rocoso en el cuerpo mineralizado “nuevo bosque” para propuesta de un diseño de explotación en la empresa Bosque de Oro Bosoromin S.A., área las guaduas, sector San Salvador

Abstract

The 'Nuevo Bosque' ore body, in San Salvador, has a high variability in its geomechanical quality, with areas of low resistance and high fracturing, which represents a challenge for the stability and safety of mining operations. The research aimed to geomechanically characterize the rock mass to propose a mining design that would optimize safety and efficiency in operations. The method required field data collection through geomechanical mapping, evaluating parameters such as uniaxial compressive strength (UCS), rock quality designation (RQD), and Bieniawski's RMR classification, complemented with laboratory tests to determine the physical-mechanical properties of the samples. The results showed that the rock mass has a variable quality, as there are areas of high fracturing and low resistance, being classified in an RMR category that requires moderate to severe structural support, as proved by the Geological Strength Index (GSI). Based on these findings, a subway mining design using the cut-and-fill method adapted to the specific geomechanical conditions of the deposit, was proposed to minimize instability risks, maximize ore recovery, and ensure operational safety. Therefore, this study offers a practical and rigorous approach to optimize mining in rock massifs with similar characteristics, contributing to the sustainability and efficiency of mining projects under complex conditions.