Adquisición y evaluación de datos geométricos de macizos rocosos a partir de imágenes tridimensionales para su uso en análisis geotécnicos
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Keywords
Análisis de imágenes tridimensionales, macizo rocoso, caracterización de discontinuidades, detección remota, mapeo geológico, Colombia
Resumen
En este artículo, se evalúa la aplicación de una herramienta de adquisición remota para el muestreo y la medición de propiedades de las discontinuidades en macizos rocosos, basado en la toma e interpretación de imágenes tridimensionales. Metodológicamente, se integra un amplio plan experimental tanto en campo como en laboratorio computacional, para recopilar datos estructurales tales como la orientación, la persistencia y espaciamiento de discontinuidades presentes en un macizo rocoso tomado como caso de estudio. Paralelamente, se llevó a cabo un intenso trabajo de toma de datos en campo por metodologías convencionales de brújula y cinta, con fines comparativos y de validación estadística. Los resultados obtenidos permiten establecer las ventajas del uso de técnicas no convencionales, en términos de calidad y cantidad de información, así como de eficiencia en términos del tiempo requerido para el levantamiento de información en campo. Mediante el análisis semiautomático de imágenes tridimensionales se logró el mapeo geológico y la caracterización de discontinuidades para fines geotécnicos, constituyéndose en una herramienta poderosa con gran potencial de uso en proyectos viales y mineros en el medio colombiano.
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