Research on Sliding Mechanism of Slope with Thick Accumulation Horizon under Rainfall Condition

Liu, Xinrong; Zhang, Liang; Zu-liang, Zhong; Qi, Dahe; Huang, Yongze

doi:10.12733/jics20101803

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…With the rapid development of computer technology, it becomes a new development trend to study the slope stability under rainfall conditions through field model tests and numerical simulation. GeoStudio and other finite element software are widely used for two-dimensional seepage and stability analysis of the slope, and its calculation method and process are very mature (Liu et al ., 2013; Gao et al ., 2014; Zeng et al ., 2018). However, slope as a complex three-dimensional geological structure, only two-dimensional finite element calculation research has a certain limitations, and the results cannot fully reflect the change laws of slope affected by rainfall.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional slope stability and anti-slide pile treatment of Zhangjiayao landslide under rainfall

Han,

Hou,

Chen

2023

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PurposeTo solve the instability problem of Zhangjiayao landslide caused by rainfall, the internal mechanism of slope instability and the supporting effect of anti-slide piles are studied. The research results can provide theoretical basis for the prevention and control of loess landslides.Design/methodology/approachA three-dimensional finite element model of Zhangjiayao landslide is established by field geological survey, laboratory test and numerical simulation.FindingsThe results show that Zhangjiayao landslide is a loess-mudstone contact surface landslide, and rainfall leads to slope instability and traction landslide. The greater the rainfall intensity, the faster the pore water pressure of the slope increases and the faster the matrix suction decreases. The longer the rainfall duration, the greater the pore water pressure of the slope and the smaller the matrix suction. Anti-slide pile treatment can significantly improve slope stability. The slope safety factor increases with the increase of embedded depth of anti-slide pile and decreases with the increase of pile spacing.Originality/valueBased on the unsaturated soil seepage theory and finite element strength reduction method, the failure mechanism of Zhangjiayao landslide was revealed, and the anti-slide pile structure was optimized and designed based on the pile-soil interaction principle. The research results can provide theoretical basis for the treatment of loess landslides.HighlightsA three-dimensional finite element model of Zhangjiayao landslide is established.Zhangjiayao landslide is a loess-mudstone contact surface landslide.The toe of Zhangjiayao slope is first damaged by heavy rainfall, resulting in traction landslide.The deformation of Zhangjiayao slope is highly dependent on rainfall intensity and duration.The anti-slide pile can effectively control the continuous sliding of Zhangjiayao slope.

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Section: Introductionmentioning

confidence: 99%

Three-dimensional slope stability and anti-slide pile treatment of Zhangjiayao landslide under rainfall

Han,

Hou,

Chen

2023

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Influence of rainfall characteristics on the infiltration moisture field of highway subgrades

Liu

2015

Road Materials and Pavement Design

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Research on Sliding Mechanism of Slope with Thick Accumulation Horizon under Rainfall Condition

Cited by 2 publications

References 7 publications

Three-dimensional slope stability and anti-slide pile treatment of Zhangjiayao landslide under rainfall

Three-dimensional slope stability and anti-slide pile treatment of Zhangjiayao landslide under rainfall

Influence of rainfall characteristics on the infiltration moisture field of highway subgrades

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