Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)
- 2010.03a
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- Pages.921-926
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- 2010
Permeability Coefficient of Unsaturated Soil in Steep Slope Failure Area
붕괴가 발생한 급경사지의 현장 투수계수
- Choi, Eun-Kyeong (Geo-Information Research Group Co., Ltd.) ;
- Kim, Sung-Wook (Geo-Information Research Group Co., Ltd.) ;
- Park, Dug-Keun (National Emergency Management Agency) ;
- Oh, Jeong-Rim (National Emergency Management Agency)
- Published : 2010.03.25
Abstract
To examine saturation characteristics of an unsaturated soil in the steep slope area with collapse, it separated dry season from rainy season and measured water content and permeability, and measured permeability by using a tension infiltrometer in the site. In addition, it conducted electrical resistivity survey to look into thickness of ground and geological structure of underground. The collapsed slope increased depth of weathered zone compared to upper slope, and there electrical resistivity anomalous zone caused by the filtrated underground water was observed. The permeability of the collapsed area was observed high compared to upper and lower slopes of retarding basin without collapse, and the permeability measured by dividing the dry season and rainy season was measured high in case of dry season.