Evaluación geomecánica de los afloramientos de la Formación Piñon en el Sector de Villa del Rey, Daule, Provincia del Guayas
Fecha
2024
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Universidad de Guayaquil. Facultad de Ciencias Naturales
Resumen
El presente trabajo de investigación que aborda un estudio geológico y geomecánico exhaustivo en el sector de Villa del Rey, utilizando herramientas como modelos digitales del terreno, fotogrametría y análisis petrográficos. Se aplicó el modelo digital del terreno para identificar alturas y generar perfiles de taludes en afloramientos, mientras que la fotogrametría proporcionó ortofotos de alta resolución y mapas de pendientes, esenciales para reconocer lineamientos en la zona. La observación de fracturas y signos de levantamiento en taludes, confirmados mediante criterios cinemáticos, sugiere un proceso dinámico que fue evaluado.
Se estudiaron cuatro afloramientos en el sector, abarcando diversas litologías como basalto, gabros, dolerita y lutita silicificadas. Los resultados respaldan la pertenencia litológica de estos afloramientos a la Formación Piñón y la descripción petrográfica de secciones delgadas confirmó la composición de las rocas pertenecientes a dicha Formación, se destaca la posibilidad de una zona de transición en el afloramiento AF2.
En términos geomecánicos, la clasificación de estaciones mostró predominio de la clase II con calidad buena, sugiriendo condiciones geotécnicas favorables. Las estaciones AF1 – E1 y AF2 - E1, clasificadas como clase III con calidad media, requerirían monitoreo continuo. Estos resultados proporcionan una base sólida para futuros proyectos geotécnicos y exploratorios en el sector de Villa del Rey.
The present research addresses a comprehensive geological and geomechanically study in the Villa del Rey sector, employing tools such as digital terrain models, photogrammetry, and petrographic analysis. The digital terrain model was utilized to identify elevations and generate slope profiles in outcrops, while photogrammetry provided high-resolution orthophotos and slope maps, crucial for recognizing geological features in the area. The observation of fractures and signs of uplift in slopes, confirmed through kinematic criteria, suggests a dynamic geological process that was thoroughly assessed. Four outcrops in the sector were investigated, covering various lithologies such as basalt, gabbro, dolerite, and silicified lutite. The results strongly support the lithological affiliation of these outcrops with the Piñon Formation, and the petrographic description of thin sections corroborated the composition of rocks belonging to this formation, highlighting the possibility of a transitional zone in the AF2 outcrop. In geomechanically terms, the station classification predominantly showed Class II with good quality, suggesting favorable geotechnical conditions. Stations AF1 – E1 and AF2 - E1, classified as Class III with medium quality, would necessitate continuous monitoring. These results provide a robust geological and geomechanically foundation for future projects in the Villa del Rey sector.
The present research addresses a comprehensive geological and geomechanically study in the Villa del Rey sector, employing tools such as digital terrain models, photogrammetry, and petrographic analysis. The digital terrain model was utilized to identify elevations and generate slope profiles in outcrops, while photogrammetry provided high-resolution orthophotos and slope maps, crucial for recognizing geological features in the area. The observation of fractures and signs of uplift in slopes, confirmed through kinematic criteria, suggests a dynamic geological process that was thoroughly assessed. Four outcrops in the sector were investigated, covering various lithologies such as basalt, gabbro, dolerite, and silicified lutite. The results strongly support the lithological affiliation of these outcrops with the Piñon Formation, and the petrographic description of thin sections corroborated the composition of rocks belonging to this formation, highlighting the possibility of a transitional zone in the AF2 outcrop. In geomechanically terms, the station classification predominantly showed Class II with good quality, suggesting favorable geotechnical conditions. Stations AF1 – E1 and AF2 - E1, classified as Class III with medium quality, would necessitate continuous monitoring. These results provide a robust geological and geomechanically foundation for future projects in the Villa del Rey sector.
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GEOMECÁNICA, FORMACIÓN PIÑÓN, ESTACIONES