Títol:
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Landslide motion assessment including rate effects and thermal interactions: revisiting the Canelles landslide
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Autor/a:
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Alvarado Bueno, Mauricio; Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo
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Altres autors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental; Universitat Politècnica de Catalunya. MSR - Mecànica del Sòls i de les Roques |
Abstract:
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The re-activation of a large (40 Mm3) landslide on the valley slopes of a reservoir motivated a research initiative to estimate the risk of a fast-sliding mass moving into the reservoir. A previous simplified analysis had suggested that a joint consideration of strain rate effects on friction and thermal pressurization phenomena in the sliding surface could provide a rational approach to answer the question raised. The paper describes first the capability of strain rate effects on friction to reproduce long-term creeping records of two real cases. The joint and coupled phenomena of creeping motion and thermal pressurization in shearing bands was incorporated into a material point method computational technique for hydromechanical analysis of porous materials. A representative cross section of the Canelles landslide was then analysed, profiting from previous finite element investigations of the landslide. It was found that a rapid rate of landslide acceleration could be a possibility under extreme external actions. However, it was also found that a moderate strain rate effect on the basal residual friction angle could create conditions that avoid the triggering of a fast motion. |
Abstract:
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Peer Reviewed |
Matèries:
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-Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls -Landslide hazard analysis -Landslides -Strain rate effects -Thermal interaction -Frictional work -Large displacements -Material point method -Real case -Esllavissades |
Drets:
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Tipus de document:
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Article - Versió presentada Article |
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