Centrifuge model test of an irrigation-induced loess landslide in the Heifangtai loess platform, Northwest China

The Heifangtai platform in Northwest China is famous for irrigation-induced loess landslides. This study conducted a centrifuge model test with reference to an irrigation-induced loess landslide that occurred in Heifangtai in 2011. The loess slope model was constructed by whittling a cubic loess blo...

Full description

Saved in:
Bibliographic Details
Published in:Journal of mountain science 2018, Vol.15 (1), p.130-143
Main Authors: Cui, Sheng-hua, Pei, Xiang-jun, Wu, Hao-yu, Huang, Run-qiu
Format: Article
Language:English
Subjects:
Centrifuges
Computer simulation
Deformation
Earth
Earth and Environmental Science
Earth pressure
Earth Sciences
Ecology
Environment
Failures
Geography
Hydrostatic pressure
Infiltration
Instability
Internal friction
Irrigation
Irrigation water
Landslides
Landslides & mudslides
Loess
Pore pressure
Pore water pressure
Slope stability
Transducers
Water pressure
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The Heifangtai platform in Northwest China is famous for irrigation-induced loess landslides. This study conducted a centrifuge model test with reference to an irrigation-induced loess landslide that occurred in Heifangtai in 2011. The loess slope model was constructed by whittling a cubic loess block obtaining from the landslide site. The irrigation water was simulated by applying continuous infiltration from back of the slope. The deformation, earth pressure, and pore pressure were investigated during test by a series of transducers. For this particular study, the results showed that the failure processes were characterized by retrogressive landslides and cracks. The time dependent reductions of cohesion and internal friction angle at basal layer with increasing pore-water pressure were responsible for these failures. The foot part of slope is very important for slope instability and hazard prevention in the study area, where concentration of earth pressure and generation of high pore-water pressures would form before failures. The measurements of earth pressure and pore-water pressure might be effective for early warning in the study area.
ISSN:1672-6316
1993-0321
1008-2786
DOI:10.1007/s11629-017-4490-0