Stability Analysis of Unsaturated Soil Slope Based on Fredlund Strength Theory

2010 ◽  
pp. 1-12
Author(s):  
Wang Shi-mei ◽  
Liu De-fu ◽  
Chen Yong ◽  
Lai Xiao-ling
Keyword(s):  
Stability Analysis ◽  
Unsaturated Soil ◽  
Soil Slope ◽  
Strength Theory

scholarly journals Stability analysis of unsaturated soil slope under rainfall and seepage conditions

2019 ◽  
Vol 371 ◽  
pp. 032072
Author(s):  
Shengjie Di ◽  
Ying Zhang ◽  
Heng Zhou ◽  
Hongru Li ◽  
Peng Huang
Keyword(s):  
Stability Analysis ◽  
Unsaturated Soil ◽  
Soil Slope

Stability analysis of an unsaturated soil slope considering rainfall infiltration based on the Green-Ampt model

2020 ◽  
Vol 17 (10) ◽  
pp. 2577-2590
Author(s):  
Zi-zhen Liu ◽  
Zhi-xin Yan ◽  
Zhan-hong Qiu ◽  
Xiao-gang Wang ◽  
Ji-wei Li
Keyword(s):  
Stability Analysis ◽  
Unsaturated Soil ◽  
Rainfall Infiltration ◽  
Soil Slope

The Stability Analyses of Unsaturated Slope Based on the Sarma Method

2011 ◽  
Vol 393-395 ◽  
pp. 1569-1573
Author(s):  
Rong Jian Li ◽  
Qiang Xu ◽  
Wen Zheng ◽  
Hung Chou Lin
Keyword(s):  
Slope Stability ◽  
Unsaturated Soil ◽  
Geotechnical Engineering ◽  
Matric Suction ◽  
Computational Error ◽  
Computational Results ◽  
Soil Slope ◽  
Strength Theory ◽  
Stability Analyses ◽  
The Stability

The study of unsaturated slope stability is one of issues in geotechnical engineering. Firstly, the different treatments of matric suction in the Sarma method are analyzed based on the Bishop’s unsaturated strength theory and Fredlund’s unsaturated strength theory respectively. Then, application of the developed method on the stability analyses of an unsaturated soil slope is also discussed. Through the comparison on the computational results, it still can be concluded that the computational error is slights, which analyzed by means of the developed Sarma method based on the Bishop’s unsaturated strength theory and Fredlund’s unsaturated strength theory.

Stability analysis of soil slope based on rainfall

2020 ◽  
pp. 18-26
Author(s):  
ZONG GANG ◽  
FU JIAJIA ◽  
WANG YAO
Keyword(s):  
Shear Strength ◽  
Stability Analysis ◽  
Slope Stability ◽  
Unsaturated Soil ◽  
Heavy Rainfall ◽  
Soil Slope ◽  
Short Term ◽  
Soil Shear Strength ◽  
The Stability

Rainfall is the main cause of landslides, the two are closely related. Based on the theory of saturatedunsaturated seepage and the theory of unsaturated soil shear strength, this paper makes an in-depth comparatve analysis on the infuence of short-term heavy rainfall and long-term weak rainfall on slope stability. The results show: The soil above the slope is more likely to reach saturaton under short-term heavy rainfall, while the infuence of long-term weak rainfall on the slope soil is deeper and the stability is greatly reduced. However, landslides with long periods of weak rainfall are more dangerous. In additon, the method of determining the critcal rainfall of a slope for landslide is obtained, and the safety status of the slope can be directly judged by comparing the actual rainfall with the critcal rainfall, and the classifcaton standard of the safety grade of a specifc slope is further obtained, which can provide reference for landslide preventon and treatment.

Soil Strength Reduction Method Induced by Variation of Water Content

2012 ◽  
Vol 170-173 ◽  
pp. 847-852
Author(s):  
Peng Ming Jiang ◽  
Zhong Lei Yan ◽  
Peng Li
Keyword(s):  
Slope Stability ◽  
Unsaturated Soil ◽  
Unsaturated Soils ◽  
Characteristic Curve ◽  
Strength Reduction ◽  
Actual State ◽  
Soil Slope ◽  
Simple Method ◽  
The Common ◽  
The Stability

As the complexity of unsaturated soil theory, and it must have a long test period when we study the unsaturated soils, so the conventional design analysis software does not provide such analysis, so we can imagine that such a slope stability analysis does not accurately reflect the actual state of the slope. Based on the known soil moisture content，this paper use the soil water characteristic curve and strength theory of unsaturated soil to calculate the strength reduction parameters of soil which can calculate the stability of the soil slope when using the common calculation method. It is noticeable that this method can be extended and applied if we establish regional databases for this simple method, and these databases can improve the accuracy of the calculation of slope stability.

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