Stability analysis of an ancient landslide considering shear strength reduction behavior of slip zone soil

被引：31

作者：

Chen, Xiao-ping ^{[1
]}

Zhu, Hong-hu ^{[2
]}

Huang, Jing-wu ^{[3
]}

Liu, Dong ^{[4
]}

机构：

[1] Jinan Univ, Coll Sci & Engn, Key Lab Disaster Forecast & Control Engn, Guangzhou, Guangdong, Peoples R China

[2] Nanjing Univ, Sch Earth Sci & Engn, Nanjing 210008, Jiangsu, Peoples R China

[3] Guangdong Hydropower Planning & Design Inst, Guangzhou, Guangdong, Peoples R China

[4] Shenzhen Comprehens Geotech Engn Invest & Design, Shenzhen, Peoples R China

来源：

LANDSLIDES | 2016年 / 13卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Slip zone; Residual shear strength; Landslide; Strain-softening; Slope stability; Finite element analysis; FINITE-ELEMENT-ANALYSIS; PROGRESSIVE FAILURE; NUMERICAL-ANALYSIS; RESIDUAL STRENGTH; RESERVOIR;

D O I：

10.1007/s10346-015-0629-7

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

In this paper, the stability of an ancient landslide during the first impounding of a nearby reservoir is investigated through the analyses of the shear strength reduction behavior of slip zone soil. In view of the experimental observations, an empirical strain-dependent soil model is established and is then incorporated in finite element analyses. The numerical analysis results show that the failing sections progressively develop due to the soil strength declines from peak toward residual, and the shear zone propagates within the front slope. It is demonstrated in the numerical results that the toe weighting measure has a significant effect on restraining the shear displacements of the soils and preventing the progressive failure of the landslide. The field observations further confirmed the stability condition of the reinforced landslide.

引用

页码：173 / 181

页数：9

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