Rock cut stability assessment in mountainous regions |
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Authors: | Gorka Uribe-Etxebarria Tomás Morales Jesús A Uriarte Valentín Ibarra |
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Institution: | (1) Department of Geodynamics, Science and Technology Faculty, University of the Basque Country, B°Sarriena s/n, 48940 Leioa, Spain;(2) TEAM SL, Parque Tecnológico, Edif. 207-B, 48170 Zamudio, Spain |
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Abstract: | Ensuring stability of rock slopes is an essential requirement in the progress of our societies today. Rock determined to be
loose or with potential for failure must be removed or restrained in some way. In our work, after doing an inventory of the
instabilities that occurred in the last 5 years in the Basque Country, we analyse the different factors, in slope stability.
The potential for failure is evaluated for different classes of rock mass, characterized previously by their geomechanical
properties. The characterization of potential risk of each one is undertaken by considering 10 parameters that define the
nature of mass rock, relative orientation and morphological features of the slope (interaction rock massif-slope) and infrastructure
features (interaction rock massif-slope-infrastructure). Each of these parameters is evaluated separately and a Risk Factor
(RF) is determined. The RF reaches a maximum value of 10,000 and allows to differentiate four categories of slopes; each category
has its own priority. Rock mass characteristics also determine the potential damage from instability and the associated correction
measures. The systematic evaluation of instabilities must allow establishing a priority in the correction measures and thus
optimise the available economic resources. |
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Keywords: | Rock cut stability Linear infrastructures Risk Factor Mountainous regions |
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