Slope stability analysis of expansive soil considering the effect of rainfall

Author

Zeng, Zhao-tian ; Luo, Dan-peng ; Lu, Hai-bo

Author_Institution

Res. Inst. of Preventing & Mitigating Disasters, Guangxi Univ., Nanning, China

fYear

2011

fDate

15-17 July 2011

Firstpage

6083

Lastpage

6086

Abstract

Slope stability of expansive soil is analyzed according to rainfall intensities, rain patterns and saturated hydraulic conductivity by the theory of saturated-unsaturated seepage. The results show: 1) the slope stability decreased with the increase of the rainfall intensities; 2) the weathered surface layer has a great influence to slope stability because its high permeability is one of the underlying reasons why the expansive soil slope is prone to have shallow landslides; 3) rainfall concentrated in earlier stage is against the slope stability, while it is one of the outside reasons why the toe of expansive soil slop is most likely to be landslide that the water is pounding at the toe area during rainstorm.

Keywords

erosion; geomorphology; permeability; rain; soil; expansive soil; landslide; permeability; rain pattern; rainfall intensity; saturated hydraulic conductivity; slope stability analysis; weathered surface layer; Conductivity; Numerical stability; Rain; Safety; Soil; Stability analysis; Thermal stability; rain infiltration; shear strength; slope stability analysis; unsaturated expansive soil;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on

Conference_Location

Hohhot

Print_ISBN

978-1-4244-9436-1

Type

conf

DOI

10.1109/MACE.2011.5988425

Filename

5988425