Piezometric measurements in the core of dams made of moraines reveal that pore pressure dissipation mainly occurs near the downstream face of the cores, probably due to the lack of granulometric stability of these materials during seepage flow. To analyse this phenomenon, conventional criteria defining susceptibility to suffusion are first recalled and applied to the moraine materials composing the S. Valentino (Italy) and Suorva (Sweden) dams. An original numerical procedure to simulate the particle migration phenomena in granular media due to seepage processes is then reported. Effects of deposition–erosion processes occurred in the moraine materials composing the S. Valentino and Suorva dams, at the interface core–granular transition, have been then simulated and interpreted: the tolerable malfunctions (higher free surface profile and pore pressures) in the core of the S. Valentino dam and the failures at Suorva dams

Federico, F., Montanaro, A. (2012). Granulometric stability of moraine embankment dam materials. INTERNATIONAL WATER POWER & DAM CONSTRUCTION.

Granulometric stability of moraine embankment dam materials

FEDERICO, FRANCESCO;
2012-01-01

Abstract

Piezometric measurements in the core of dams made of moraines reveal that pore pressure dissipation mainly occurs near the downstream face of the cores, probably due to the lack of granulometric stability of these materials during seepage flow. To analyse this phenomenon, conventional criteria defining susceptibility to suffusion are first recalled and applied to the moraine materials composing the S. Valentino (Italy) and Suorva (Sweden) dams. An original numerical procedure to simulate the particle migration phenomena in granular media due to seepage processes is then reported. Effects of deposition–erosion processes occurred in the moraine materials composing the S. Valentino and Suorva dams, at the interface core–granular transition, have been then simulated and interpreted: the tolerable malfunctions (higher free surface profile and pore pressures) in the core of the S. Valentino dam and the failures at Suorva dams
2012
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore ICAR/07 - GEOTECNICA
English
Con Impact Factor ISI
migration of particles, soffusion, moraines, embankement dams
Federico, F., Montanaro, A. (2012). Granulometric stability of moraine embankment dam materials. INTERNATIONAL WATER POWER & DAM CONSTRUCTION.
Federico, F; Montanaro, A
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/137073
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