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- Title
Centrifuge modeling of intact clayey loess slope by rainfall.
- Authors
Liang, Changyu; Wu, Shuren
- Abstract
Loess area is the region that geohazards happened most frequently, accounting for 1/3 of the geohazards in China. Cutting slope has become the most prominent products in human engineering activities and slope failure induced by rainfall has become the main form in recent years. Well-instrumented centrifuge model tests have been introduced to investigate the failure process and failure pattern, including pore water pressure, progressive deformation-failure process and characteristic of the high cutting slope by rainfall. The results show that rainfall induced loess slope failure is characterized by shallow slide to flow and two deeper creepage sliding-tension surfaces. All the sliding faces are characterized by planar surfaces parallel to slope surface. The planar sliding surface differs a lot to the circular sliding surface in the gravitational soil landslide. The accumulative deformation especially the abrupt displacement before failure induced the excess pore water pressure, after which flow failure with high-speed happened. The pore-water transducers on both sides of the shallow sliding surface have distinct response to slope deformation. The quantitative monitoring data indicates that the liquefaction is not the reason but the result of the deformation accumulation and big transient deformation.
- Subjects
CHINA; RAINFALL; SLOPES (Soil mechanics); LOESS; LANDSLIDES; CENTRIFUGES; ERGONOMICS; PORE water pressure; MASS-wasting (Geology); ROCK slopes
- Publication
Environmental Earth Sciences, 2024, Vol 83, Issue 11, p1
- ISSN
1866-6280
- Publication type
Article
- DOI
10.1007/s12665-024-11653-8