IGB

Connexion

(Article of periodic en Anglais - 2012)

Document title

Thaw-consolidation effects on the stability of alpine talus slopes in permafrost

Authors(s) and Affiliation(s)

BOMMER C. (1) ; FITZE P. (1) ; SCHNEIDER H. (1) ;
(1) HSR - Univ. of Applied Sciences, Rapperswil, SUISSE

Abstract

The relative contributions of thaw consolidation and slope-parallel seepage to the generation of overall porewater pressure and resultant potential changes in slope stability are determined in 2 case studies of thawing soils. The first study concerns experimental slopes of frozen silt inclined at 12° and 24° that thawed during scaled centrifuge modelling reported by Harris et al. (2008). The second study concerns a natural slope near Pontresina, eastern Swiss Alps, of coarse-grained talus inclined at 37° and overlying fine-grained soil that contains the permafrost table. In both cases, seepage parallel to the slope was found to contribute much more to the excess porewater pressures in the thawing soils than did thaw consolidation. This suggests that the effects of thaw consolidation on the stability of alpine talus slopes in mountain permafrost may have only minor significance

Source

Article of periodic

published at : Permafrost and periglacial processes / ISSN 1045-6740 / CODEN PEPPED

Editor : Wiley, Chichester - ROYAUME-UNI (1990)

Millesime : 2012, vol. 23, no4 [pp. 267-276]

Bibliographic references : 1 p.

Collation : 9 fig., 3 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.1751

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
Refdoc record number (ud4) : 27865243 : Permanent link - XML version
Powered by Pxxo