Numerical analysis of rainfall saturated-unsaturated seepage and stability of expansive soil slope with fissures

DOI

10.2991/icsmme-15.2015.24How to use a DOI?

Keywords

Fissures, Rainfall, Seepage, Stability, Numerical Analysis

Abstract

The existence of fissures is an important factor in expansive soil slope landslide under rainfall conditions. In order to explore the changes characteristic of expansive soil slope seepage field and its stability under rainfall conditions, considering the fissures, the finite element numerical simulation of saturated unsaturated seepage in expansive soil slope under rainfall is carried out, obtaining the time and space distribution of pore water pressure and transient saturation area. Then import the analysis results into FLAC3D software which based on the finite difference method, finally assignment of physical and mechanical parameters in saturated unsaturated, this achieves stability analysis under the presence of fissures, and also reflects the water softening influence on the stability of expansive soil slope. Through the example analysis shows that, the existence of fissures in expansive soil slope has remarkable influence the rainfall infiltration and pore water pressure distribution, the numerical simulation study conclusions are consistent with the existing results, it is proved that this method is effective and practical, the research findings have certain reference significance of the analysis of slope stability and its saturated unsaturated seepage.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Dinggui Hou
AU  - Zhigang Tao
AU  - Zhenli Hao
AU  - Jiamin Wang
PY  - 2015/11
DA  - 2015/11
TI  - Numerical analysis of rainfall saturated-unsaturated seepage and stability of expansive soil slope with fissures
BT  - Proceedings of the 2015 International Conference on Structural, Mechanical and Material Engineering
PB  - Atlantis Press
SP  - 103
EP  - 106
SN  - 2352-5401
UR  - https://doi.org/10.2991/icsmme-15.2015.24
DO  - 10.2991/icsmme-15.2015.24
ID  - Hou2015/11
ER  -