Modelación de la contribución arbórea en análisis de susceptibilidad a deslizamientos superficiales

Roberto José Marín Sánchez, Juan Pablo Osorio Salas

Resumen


El presente artículo evalúa la susceptibilidad a ocurrencia de deslizamientos superficiales, empleando un método que permite modelar en grandes áreas de terreno, cuantificando la contribución de los árboles a la estabilidad mediante tres parámetros principales: interceptación de lluvia, refuerzo aportado por las raíces y sobrecarga debida a su peso. Se utiliza un modelo de interceptación para determinar la lluvia disponible para infiltración y su distribución temporal durante la misma. Se describen varios modelos hidrológicos, implementados en TRIGRS, y que según las condiciones iniciales permiten estimar la presión de poros. Esta variable se incluye en el modelo revisado de estabilidad de taludes infinitos, el cual considera los términos de refuerzo de las raíces y sobrecarga, permitiendo modelar la estabilidad en términos del factor de seguridad en toda una cuenca. Finalmente, se simulan diferentes escenarios de densidad arbórea en una cuenca del Valle de Aburrá y se comparan los resultados con una modelación realizada sin considerar el efecto de los árboles en la estabilidad.

Palabras clave


Estabilidad de taludes; deslizamientos superficiales; TRIGRS; interceptación de lluvia; refuerzo de las raíces; sobrecarga arbórea.

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Referencias


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DOI: https://doi.org/10.24050/reia.v14i28.975

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