Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2008.10a
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- Pages.1029-1037
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- 2008
A study on the Stability Analysis of Slope in Unsaturated Soil Based on the Soil-Water characteristic curve
함수특성곡선을 고려한 불포화토 사면의 안정성 연구
- Yoon, Min-Ki (Dept. of Civil Engineering, Kyonggi University) ;
- Kim, Jong-Sung (Dept. of Civil Engineering, Kyonggi University) ;
- Kim, Hyo-Jung (Dept. of Civil Engineering, Kyonggi University) ;
- Lee, Yeong-Saeng (Dept. of Civil Engineering, Kyonggi University)
- Published : 2008.10.10
Abstract
The finite element analysis of transient water flow through unsaturated soils was used to investigate effects of hydraulic characteristics, initial relative degree of saturation, methods to consider boundary condition, and rainfall intensity and duration on water pressure in slopes. The finite element method with shear strength reduction technique was used to evaluate the stability of slopes under rainfall. The slope-related disasters in Korea usually occur between July and September during the typhoon and localized heavy rain. This means that the rainfall is the most important factor that leads to the slope-related disasters. The slope-related disasters can happen at very short time and lead to big damage. To forecast the change of the heave of the groundwater in slope the Seep/w program was used.