Tunnel and Underground Space (터널과지하공간)

Korean Society for Rock Mechanics and Rock Engineering (한국암반공학회)
권호 표지

An Analysis of Stability on Rock Slope by Changing Water Level

지하수위 변화에 따른 암반사면의 안정성 해석

  • 장형두 (전남대학교 에너지자원공학과) ;
  • 양형식 (전남대학교 에너지자원공학과)
  • Published : 2010.02.28
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Abstract

A quarry with 105 m height large cut slope was analyzed. Beside RMR and SMR methods, FLAC2D were adopted to analyze slope stability. As a result, slope of andesite had a possibility of failure. Wet slope showed low safety factor. Soil nailing was recommended to solve it. Since safety factor of slope largely depend on underground level, investigation for it seemed necessary.

총 7단 105 m 높이의 대규모 절개면을 가진 석산에 대하여 안정성 해석을 하였다. RMR, SMR 해석과 함께 FLAC/slope를 이용하여 지하수위의 변화에 따른 안정성 해석을 실시하였다. 해석결과 안산암 부분에 파괴의 위험성이 나타났으며 습윤 시 안전율이 낮게 나타나서 soil-nailing과 같은 대책이 필요한 것으로 나타났다. 사면의 안정성은 지하수위에 따라 크게 변하여 지하수위에 대한 정밀한 조사가 필요한 것으로 판단되었다.

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References

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