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2017 Vol.33, Issue 4 Preview Page
Predicted Hydraulic Behavior in In-Situ Soil Slope Using the Path-Dependent Soil Water Characteristic Curve

불포화 함수특성의 경로의존성을 고려한 현장사면 수리거동 예측

Hyun Su Park1
,
Young-Suk Song2
,
Seong-Wan Park3
박 현수1
,
송 영석2
,
박 성완3
1Member, Graduate Student, Dept. of Civil & Environmental Eng., Dankook Univ.
2Member, Principal Researcher, Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources
3Member, Prof., Dept. of Civil & Environmental Eng., Dankook Univ.
1정회원, 단국대학교 토목환경공학과 박사과정
2정회원, 한국지질자원연구원 책임연구원
3정회원, 단국대학교 토목환경공학과 교수
*교신저자. *Corresponding Author. 
30 April 2017. pp. 25-34
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Abstract

The soil-water characteristics is the most important state parameter for understanding changes in suction and water contents of unsaturated soil slopes. In the field, the hysteretic behaviors of drying and wetting soil-water characteristic curve are real and the adoption of path-dependent suction-water content is needed to predict the hydro-mechanical analysis of unsaturated soils. In this study, in-situ monitored hydraulic behavior of various soil slopes are compared with the data from numerical analysis with the laboratory soil water characteristic curve. Then, the verifications are performed based on the field monitored data respectively. Therefore, the use of path-dependent soil-water characteristic curves could be more rational for design and analysis of unsaturated soil slopes under rainfall conditions.

Keywords
Path-dependency
SWCC
Field Slope
Unsaturated Soils

불포화상태 지반의 흡수력과 응력변화를 반영한 토사사면의 전체 안정성 평가에서 매우 중요한 상태평가 입력변수 로 함수특성곡선이 활용되고 있다. 함수특성의 경로의존성은 일반적으로 건조와 습윤과정으로 이력현상을 내포하는 데 현장계측결과는 주로 실내실험의 습윤과정에 가깝게 나타난다. 본 연구에서는 이를 비정상류 해석에 적용하여 해석과 현장 계측된 결과들을 비교 검토하였다. 또한 심도가 증가할수록 강우의 영향이 작고 습윤과정을 적용해 산정 된 값에 근접하였다. 따라서 불포화 토사사면 해석 시에 경로의존 함수특성곡선을 적용하여 안정성을 판단하는 것이 보다 합리적인 결과로 판단된다.

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Information
  • Publisher :The Korean Geotechnical Society
  • Publisher(Ko) :한국지반공학회
  • Journal Title :Journal of the Korean Geotechnical Society
  • Journal Title(Ko) :한국지반공학회 논문집
  • Volume : 33
  • No :4
  • Pages :25-34
  • Received Date : 2017-02-24
  • Accepted Date : 2017-04-07
  • DOI :https://doi.org/10.7843/kgs.2017.33.4.25
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