Estudio del impacto del factor "D" en el criterio de rotura de Hoek-Brown sobre los parámetros de resistencia del Macizo Rocoso
Abstract
El artículo investiga cómo el factor de alteración "D" afecta los parámetros de resistencia y deformación en diferentes tipos de macizos rocosos. Se encontró que a medida que el valor de "D" aumenta, la resistencia global (σcm) y el ángulo de fricción (Φ) disminuyen, siendo esta reducción más pronunciada en macizos de mala calidad geotécnica, donde la resistencia puede disminuir hasta un 84%. Este hallazgo destaca la importancia de considerar el factor "D" en el diseño de perforación y voladura en estos macizos, que son altamente sensibles al impacto de la voladura. Además, se observó que el módulo de deformación (Em) también disminuye con el aumento de "D", mostrando una reducción del 50% en todos los casos analizados. Aunque esta reducción es menos marcada que en la resistencia global, sigue siendo un factor importante a considerar en los modelos de macizos rocosos. En resumen, el estudio resalta la influencia significativa del factor "D" en la resistencia y deformación de los macizos rocosos, subrayando la necesidad de considerar este factor en el diseño y análisis de proyectos geotécnicos. Palabras clave: Macizo rocoso, Factor de alteración, parámetros.
The article investigates how the alteration factor "D" affects the strength and deformation parameters in different rock masses. It was found that as the value of "D" increases, the global strength (σcm) and the friction angle (Φ) decrease, with this reduction being more pronounced in poor geotechnical quality rock masses, where strength can decrease by up to 84%. This finding highlights the importance of considering the "D" factor in the design of drilling and blasting in these rock masses, which are highly sensitive to blasting impact. Additionally, it was observed that the modulus of deformation (Em) also decreases with increasing "D", showing a 50% reduction in all analyzed cases. Although this reduction is less pronounced than in global strength, it remains an important factor to consider in rock mass models. In summary, the study emphasizes the significant influence of the "D" factor on the strength and deformation of rock masses, underlining the need to consider this factor in the design and analysis of geotechnical projects. Keywords: Rock mass, Disturbance factor, parameters.
The article investigates how the alteration factor "D" affects the strength and deformation parameters in different rock masses. It was found that as the value of "D" increases, the global strength (σcm) and the friction angle (Φ) decrease, with this reduction being more pronounced in poor geotechnical quality rock masses, where strength can decrease by up to 84%. This finding highlights the importance of considering the "D" factor in the design of drilling and blasting in these rock masses, which are highly sensitive to blasting impact. Additionally, it was observed that the modulus of deformation (Em) also decreases with increasing "D", showing a 50% reduction in all analyzed cases. Although this reduction is less pronounced than in global strength, it remains an important factor to consider in rock mass models. In summary, the study emphasizes the significant influence of the "D" factor on the strength and deformation of rock masses, underlining the need to consider this factor in the design and analysis of geotechnical projects. Keywords: Rock mass, Disturbance factor, parameters.
Description
Vol. 9, No. 2