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Descripción
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| Rock squeezing typically occurs in weak overstressed rock masses, producing difficulties during construction associated to excessive convergences and/or to the need for non-standard excavation and support methods. This paper presents a new tool for empirical prediction of squeezing conditions in rock tunnels based on case-histories in tunnels under high stresses. The methodology is based on the use of a linear classifier for statistical analysis of a database of well-documented case histories compiled from the literature. Results show that rock quality (as measured by the Rock Mass Number, N) and depth have a significant influence on squeezing predictions. The newly proposed estimator is also shown to provide unbiased predictions of squeezing behavior; and it also allows to compute estimated probabilities of squeezing. | |
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Internacional
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Si |
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Nombre congreso
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International Congress of Rock Mechanics |
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Tipo de participación
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960 |
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Lugar del congreso
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Revisores
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Si |
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ISBN o ISSN
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978-0-415-80444-8 |
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DOI
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Fecha inicio congreso
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18/10/2011 |
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Fecha fin congreso
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21/10/2011 |
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Desde la página
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1693 |
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Hasta la página
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1696 |
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Título de las actas
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Harmonising Rock Engineering and the Environment |