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Landslide motion assessment including rate effects and thermal interactions: revisiting the Canelles landslide

Alvarado, Mauricio ; Pinyol, Nuria M ; Alonso, Eduardo E

Canadian geotechnical journal, 2019-09, Vol.56 (9), p.1338-1350 [Periódico revisado por pares]

Ottawa: NRC Research Press

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Título:
Landslide motion assessment including rate effects and thermal interactions: revisiting the Canelles landslide
Autor: Alvarado, Mauricio ; Pinyol, Nuria M ; Alonso, Eduardo E
Assuntos: Acceleration ; Computer applications ; Creep (materials) ; Enginyeria civil ; Esllavissades ; Friction ; Frictional work ; Geotechnology ; Geotècnia ; Landslide hazard analysis ; Landslides ; Landslides & mudslides ; Large displacements ; Material point method ; Mecànica de sòls ; Movement ; Porous materials ; Pressurization ; Questions ; Real case ; Reservoirs ; Shearing ; Sliding ; Slope ; Slumping ; Strain ; Strain rate ; Strain rate effects ; Studies ; Terrain ; Thermal interaction ; Àrees temàtiques de la UPC
É parte de: Canadian geotechnical journal, 2019-09, Vol.56 (9), p.1338-1350
Descrição: The re-activation of a large (40 [Mm.sup.3]) 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.
Editor: Ottawa: NRC Research Press
Idioma: Inglês

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Landslide motion assessment including rate effects and thermal interactions: revisiting the Canelles landslide

Alvarado, Mauricio ; Pinyol, Nuria M ; Alonso, Eduardo E

Ottawa: NRC Research Press

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