Análisis tridimensional del comportamiento dinámico de una fortificación ante un evento sísmico inducido
DOI:
https://doi.org/10.4067/S0718-28132017000100008Palabras clave:
estallido de roca, demanda de energía, Flac3D, macizo rocoso, evento sísmico, energía sísmicaResumen
Los estallidos de roca son un riesgo que ha ido en aumento en excavaciones alrededor de todo el mundo. La principal razón de esta tendencia es el aumento de la profundidad en la que se están realizando las correspondientes actividades. La capacidad que poseen los elementos de una cierta fortificación frente a este tipo de eventos ha sido exhaustivamente analizada durante los últimos veinticinco años. Principalmente en términos de su capacidad de absorber energía sísmica. Sin embargo, aún existe una gran incertidumbre en lo que respecta a la cantidad de energía que efectivamente transfiere un evento sísmico a la fortificación, es decir, la demanda de energía. El estudio que se presenta a continuación es un modelo tridimensional realizado en el programa Flac3D. Este modelo tiene como principal objetivo evaluar la energía ejercida por el macizo rocoso sobre la fortificación ante eventos sísmicos de distintas magnitudes y comparar estos resultados con los resultados de los ensayos publicados a la fecha.
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