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http://dx.doi.org/10.7843/kgs.2009.25.2.25

Effect of Pore Water Pressure on Slope Stability by Using Coupled Finite Element Analysis  

Shin, Jong-Ho (Dept. of Civil Engrg., Konkuk Univ.)
Kim, Hak-Moon (Dept. of Civil Engrg., Dankook Univ.)
Jang, Kyung-Jun (Dept. of Civil Engrg., Dankook Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.25, no.2, 2009 , pp. 25-35 More about this Journal
Abstract
Slope failures are one of the significant disasters which causes lots of human casualties and huge financial losses every year. Previous researches on the slope failure have indicated that most accidents are closely related to the pore water pressure in the slope due to rainfall during the rainy seasons or stormy weather conditions. It would be therefore appropriate to consider the effect of pore water pressure in the design of slopes. As the existing slopes are generally reinforced by plants and other slope protecting measures, their boundary conditions are highly complicated. In this paper an attempt to develop a new modeling and analysis technique of slopes is proposed by including pore water pressure and adopting the coupled finite element method. Non-reinforced and reinforced slope models are considered. Representative analysis showed that the numerical modeling considering pore water pressure is appropriate in slope stability analysis. Flow behavior in the slopes is identified for various hydraulic boundary conditions. It is also shown that the effect of pore water pressure on slope stability is significant.
Keywords
Coupled finite element analysis; Pore water pressur; Slope stability;
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