Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
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Case Study of Landslide Analysis due to Typhoon Hinnamnoh using Water Retention Characteristics based on the Evaporation Method

증발법 기반 함수특성을 적용한 태풍 힌남노에 의한 산사태 해석 사례 연구

  • Oh, Seboong (Dept. of Civil Engrg., Yeungnam Univ.) ;
  • Ahn, Tae Min (Dohwa Engineering, Co., Ltd.) ;
  • Jeon, Byung Gon (Dept. of Civil Engrg., Yeungnam Univ.)
  • 오세붕 (영남대학교 건설시스템공학과) ;
  • 안태민 (도화엔지니어링 ) ;
  • 전병곤 (영남대학교 건설시스템공학과 )
  • Received : 2024.03.07
  • Accepted : 2024.04.08
  • Published : 2024.06.30
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Abstract

In this study, slope stability was evaluated in consideration of unsaturated soil behavior to predict landslides. Samples were collected from a landslide site due to heavy rainfall during Typhoon Hinnamnoh. Soil moisture characteristic tests were performed based on the evaporation method using a swelling undisturbed sample and a remolded sample. Based on the hydraulic-mechanical behavior, two-dimensional infiltration and stability analyses were performed. As a result, from the two sample types, it is found that both behaviors exhibited clear differences in the results, and the behavior of the swelling undisturbed sample was able to predict the actual slope failure appropriately.

산사태 예측을 위하여 불포화토 거동을 고려한 비탈면 안정성 평가를 수행하였다. 태풍 힌남노시 집중강우로 인한 실제 산사태 현장에서 시료를 채취하였다. 팽창성 불교란 시료와 팽창이전 상태에 대한 재성형시료에 대하여 증발법을 기반으로 함수특성시험을 수행하였다. 이러한 수리-역학적 특성을 고려하여 2차원 침투해석 및 안정해석을 수행하였다. 그 결과, 두 시료는 해석 결과에서 뚜렷한 차이를 보였으며 팽창성 불교란시료의 거동이 실제 비탈면 파괴를 잘 예측할 수 있었다.

Keywords

Acknowledgement

이 연구는 한국연구재단 중견연구자지원사업(2019R1A2C1003604)의 연구비 지원으로 수행되었으며, 이에 깊은 감사를 드립니다.

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