Características localizadas en la investigación del subsuelo e implicaciones para los trabajos de cimentación: estudio de caso de Ilora, suroeste de Nigeria
DOI:
https://doi.org/10.5935/jetia.v8i35.816Resumen
Se llevaron a cabo investigaciones del subsuelo que involucraron sondeo profundo geoeléctrico, perforación y muestreo con pruebas in situ y de laboratorio en un lugar de intercambio en un terreno complejo de sótano típico de Ilora, suroeste de Nigeria, con el objetivo de detallar las características del subsuelo y la cimentación adecuada. Las investigaciones geotécnicas utilizaron pozos exploratorios de 2 Numbers, mientras que se realizaron sondeos geoeléctricos de profundidad en siete (7) puntos a lo largo de la poligonal utilizando el arreglo de Schlumberger. Se observó una capacidad de carga permisible de 800 kN/m2 para el lecho rocoso revelado a 4,00 y 6,95 m, respectivamente. El sondeo geoeléctrico de profundidad delineó el lecho rocoso (de resistividad de 3000 Ωm) que se presenta a diferentes profundidades de 4,00 a 12,00 m con características estructurales que diagnostican fallas (resistividad de 1082 / 1282 Ωm) y saprolita arcillosa de espesor significativo (resistividad de 58 / 66 Ωm; espesor de 12 m) localizado dentro de unos 45 m de luz. La integración de los conjuntos de datos indicó que el programa de perforación no pudo descifrar las características localizadas que podrían ser peligrosas para la estabilidad de la estructura a pesar de la buena correlación observada en los puntos de investigación. Este estudio subraya la necesidad de complementar las pruebas geotécnicas tradicionales con métodos de exploración geofísica para obtener resultados óptimos en la investigación del subsuelo.
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