Caracterización geomecánica de taludes en terrenos estratificados para el diseño de sistemas de estabilización de tipo rock/soil nailing
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Archivos
Fecha
2021
Autores
Facultad/escuela
Idioma
es
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ISSN de la revista
Título del volumen
Editor
Universidad Andrés Bello
Nombre de Curso
Licencia CC
Licencia CC
Resumen
El desarrollo urbano de grandes ciudades, como lo es el caso actual de Concepción,
induce la construcción de proyectos de infraestructura de distinta índole en sectores
con presencia de taludes y excavaciones de alturas y pendientes importantes. Por lo
tanto, la correcta evaluación de la estabilidad de los taludes y excavaciones cercanas a
los proyectos es un tema relevante. Este trabajo tiene el objetivo de desarrollar una
metodología para la evaluación de la estabilidad de taludes en terrenos estratificados
de suelos y rocas fracturadas y con esto diseñar sistemas de rock/soil nailing. El caso
de estudio se caracteriza por tener un macizo rocoso con presencia de unidades
estratificadas del tipo areniscas, lutitas, limolitas, arcillolitas y carbones, con distintos
grados de fracturamiento y meteorización, además de la presencia de suelos residuales
conformados por arenas, limos y arcillas. La metodología empleada se basa en la
caracterización geológica y geomecánica del área de estudio, evaluando la estabilidad
estática y sísmica (pseudo-estática) de los taludes y excavaciones donde interactúa la
roca fracturada con el suelo residual. De esta forma, son identificados los posibles
modos de falla que se pueden generar. Además, se realiza un análisis de sensibilidad
de los parámetros que influyen en la estabilidad de sistemas de rock/soil nailing en este
tipo de macizos.
The urban development of large cities, as is the current case of Concepción, induces the construction of infrastructure projects of different kinds in sectors with the presence of natural slopes and excavations of important heights. Therefore, the correct evaluation of the slopes and excavations stability near the projects is a relevant issue. This work has the objective of developing a methodology for the evaluation of the stability of slopes in stratified soils of soils and fractured rocks and with this to design rock / soil nailing systems. The case study is characterized by having a rock mass with the presence of stratified units such as sandstones, shales, siltstones, clays and coals, with different degrees of fracturing and weathering, in addition to the presence of residual rock/soils formed by sands, silts and clays. The methodology used is based on the geological and geomechanical characterization of the study area, evaluating the static and seismic (pseudo-static) stability of the slopes and excavations where the fractured rock interacts with the residual rock/soil. Then, the possible failure modes that can be generated are identified. In addition, a sensitivity analysis is carried out on the parameters that influence the stability of rock/soil nailing systems in this type of rock mass.
The urban development of large cities, as is the current case of Concepción, induces the construction of infrastructure projects of different kinds in sectors with the presence of natural slopes and excavations of important heights. Therefore, the correct evaluation of the slopes and excavations stability near the projects is a relevant issue. This work has the objective of developing a methodology for the evaluation of the stability of slopes in stratified soils of soils and fractured rocks and with this to design rock / soil nailing systems. The case study is characterized by having a rock mass with the presence of stratified units such as sandstones, shales, siltstones, clays and coals, with different degrees of fracturing and weathering, in addition to the presence of residual rock/soils formed by sands, silts and clays. The methodology used is based on the geological and geomechanical characterization of the study area, evaluating the static and seismic (pseudo-static) stability of the slopes and excavations where the fractured rock interacts with the residual rock/soil. Then, the possible failure modes that can be generated are identified. In addition, a sensitivity analysis is carried out on the parameters that influence the stability of rock/soil nailing systems in this type of rock mass.
Notas
Memoria (Ingeniero Civil)
Palabras clave
Taludes (Mecánica de Suelos), Mecánica de Rocas