Thesis ANÁLISIS TRIDIMENSIONAL DEL COMPORTAMIENTO DINÁMICO DE UNA FORTIFICACIÓN ANTE UN EVENTO SÍSMICO INDUCIDO
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Date
2017
Journal Title
Journal ISSN
Volume Title
Program
INGENIERIA CIVIL
Campus
Campus San Joaquín, Santiago
Abstract
Los estallidos de roca son un riesgo que ha ido en aumento en proyectos realizados alrededor de todo el mundo. Este hecho se debe principalmente a la tendencia de aumentar la profundidad a la que se están realizando las correspondientes actividades asociadas a estos proyectos. En la mayoría de los sectores con registros importantes de actividad sísmica, existe monitoreo del comportamiento del macizo rocoso, y en base a este monitoreo se puede medir la intensidad de los eventos sísmicos acontecidos. La capacidad de absorber energía que poseen los elementos de una cierta fortificación frente a dichos eventos ha sido exhaustivamente analizada durante los últimos veinticinco años. Sin embargo, aún existe una gran incertidumbre en lo que respecta a la cantidad de energía sísmica que efectivamente transfiere el macizo rocoso a la fortificación ante un evento sísmico inducido, es decir, la demanda de energía. El estudio que se presenta a continuación es un modelo tridimensional realizado en el programa Flac3D, cuyos fundamentos matemáticos se basan en el método de las diferencias finitas. Este modelo tiene como principal objetivo evaluar la energía sísmica transferida desde el macizo rocoso hacia la fortificación ante eventos sísmicos de distintas magnitudes y comparar estos resultados con los resultados de los ensayos publicados a la fecha.
The rockburst risk has been increasing worldwide, as the tendency is to execute activities in deeper environments. In most projects affected by seismicity, seismic monitoring is operating on the rockmass, and, according to the dynamic behavior registered at these devices, seismic intensity assessment is provided for each seismic event occurred. The measure of support capacity to absorb energy when submitted to these events has been the subject of intensive research over the last twenty five years. However, the amount of energy effectively received by the support (demand of energy) still uncertain under real events conditions. The research below is a tridimensional modeling executed in Flac3D software, which is based on the finite difference approach. The main objective of this model is to measure the seismic energy transferred by the rockmass to the underground support at different seismic magnitudes and to compare with the published results.
The rockburst risk has been increasing worldwide, as the tendency is to execute activities in deeper environments. In most projects affected by seismicity, seismic monitoring is operating on the rockmass, and, according to the dynamic behavior registered at these devices, seismic intensity assessment is provided for each seismic event occurred. The measure of support capacity to absorb energy when submitted to these events has been the subject of intensive research over the last twenty five years. However, the amount of energy effectively received by the support (demand of energy) still uncertain under real events conditions. The research below is a tridimensional modeling executed in Flac3D software, which is based on the finite difference approach. The main objective of this model is to measure the seismic energy transferred by the rockmass to the underground support at different seismic magnitudes and to compare with the published results.
Description
Catalogado desde la version PDF de la tesis.
Keywords
ANALISIS TRIDIMENSIONAL, DEMANDA DE ENERGIA, ENERGIA SISMICA, ESTALLIDO DE ROCA, EVENTO SISMICO, FLAC 3D, MACIZO ROCOSO