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Changes in the Stability of a Superhigh-Deposit Slope Considering the Influence of Seepage Erosion.

Changes in the Stability of a Superhigh-Deposit Slope Considering the Influence of Seepage Erosion.

Authors :
Li, Jian
Li, Longwei
Li, Shichang
Jiang, Lingfa
Chen, Shanxiong
Yu, Fei
Dai, Zhangjun
Source :
International Journal of Geomechanics; Jul2024, Vol. 24 Issue 7, p1-13, 13p
Publication Year :
2024

Abstract

Rainfall can cause seepage erosion of the fine particles in soil (FPS) within the wide grading of particles present in a deposit slope, reducing its strength and eventually leading to a landslide. Unfortunately, there is no effective method for simulating this phenomenon; therefore, using the finite-element method (FEM), the whole process for establishing the slope stability analysis method is described considering the effect of the erosion of FPS, which includes equations of the FPS erosion process, introducing the real seepage parameters obtained by large-scale soil-water characteristic curve (SWCC) tests, and establishing correlations among water content, fine particle content, and slope strength. The findings of the application of this method to a real project reveal that FPS erosion occurs most readily on the first and second levels of a subslope, causing shallow instability of the slope and a reduction in the slope factor of safety (FOS); however, the higher the rainfall intensity, the lower the slope FOS. The method in this paper is suitable for the deposit slope with a certain content of FPS. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
15323641
Volume :
24
Issue :
7
Database :
Complementary Index
Journal :
International Journal of Geomechanics
Publication Type :
Academic Journal
Accession number :
177251982
Full Text :
https://doi.org/10.1061/IJGNAI.GMENG-9543