Study on mechanism of retrogressive slope failure using artificial rainfall

Auteur(s) et Affiliation(s)

REGMI, R.K.

International Water Resources Research Inst., Chungnam National Univ., Daejeon, Coree, Republique de

JUNG, K.

Dept. of Civil Engineering, Chungnam National Univ., Daejeon, Coree, Republique de

NAKAGAWA, H.

Disaster Prevention Research Inst., Univ., Kyoto, Japon

KANG, J.

International Water Resources Research Inst., Chungnam National Univ., Daejeon, Coree, Republique de

Description :
The experiments, using medium-grained silica sand in a rectangular flume, consisted of detailed observations of failure process consisting series of failures successively, with particular emphasis on the time of failure; shape, size and position of the slip surface; and final shape of the model slope after down-slope displacement of the failure masses. Moisture profiles at different points within the model slope soil domain and the profile of surface-water forefront were also reported. It is highlighted that initial failure is not always necessary from the region near the toe of the slope. This study also noticed a strong correlation between rainfall intensity, sliding initiation time, and sliding head. Failure initiating near the toe propagates an unstable zone toward up-slope. Failure initiating toward the head reach may propagate down-slope and then up-slope.

Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2014, n°. 122, p. 27-41, nombre de pages : 15, Références bibliographiques : 32 ref.

Date :
2014

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais