Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Estimation of Saturation Depth by Reflecting Water-redistribution Phenomena at a Natural Slope

수분 재분포를 고려한 강우 침투 시 자연 사면에서의 포화깊이 산정

  • 김웅구 (서울대학교 대학원) ;
  • 장병욱 (서울대학교 조경지역시스템공학부 지역시스템공학) ;
  • 차경섭 (서울대학교 대학원)
  • Published : 2006.01.01
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Abstract

In Korea, most landslides occurred during the rainy season and had a shallow failure plane parallel to the slope. For these types of rainfall-induced failures, the most important factor triggering slope unstability is decrease in the matric suction of unsaturated soils with increasing saturation depth by rainfall infiltration. The saturation depth was readily estimated using modified Green-Ampt model proposed by Chu et al. (Chu Model) at present. But Chu Model involves some problems for application, because water-redistribution phenomena were not effected. So the modified Chu Model (MCGAM) which reflect water redistribution phono mens was developed. The results showed that the MCGAM had a better agreement with measured volumetric water contents than existing Chu Model.

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References

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