Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
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A Study on the Risk Evaluation using Acoustic Emission in Rock Slope

암반 비탈면에서 AE 기법을 이용한 위험도 평가 연구

  • Byun, Yoseph (Institute of Infrastructure Safety, Korea Infrastructure Safety Corporation) ;
  • Kim, Sukchun (U-Kyung Engineering & Construction) ;
  • Seong, Joohyun (Institute of Infrastructure Safety, Korea Infrastructure Safety Corporation) ;
  • Chun, Byungsik (Construction Industry Research Institute Association, Inc.) ;
  • Jung, Hyuksang (Department of Railroad Civil Engineering, Dongyang University)
  • Received : 2014.01.13
  • Accepted : 2014.10.08
  • Published : 2014.11.01
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Abstract

A slope may fail after construction owing to external factors such as localized rainfall, earthquake, and weathering. Therefore, the grasp of failure probability for slope failures is necessary to maintain their stability. In particular, it is very difficult to detect the symptoms of rock slope failure in advance by using traditional methods, such as displacement due to the brittleness of rocks. However, Acoustic Emission (AE) techniques can predict slope failures earlier than the traditional methods. This study grasped failure probability of slope by applying AE techniques to a rock slope with a history of collapse. When applying AE techniques to a slope that has a high probability of failure, the grasp of failure probability of the specific location became possible.

사면은 건설된 후에도 집중강우나 지진, 풍화 등 외부요인으로 인해 파괴가 발생할 수 있기 때문에, 사면의 안정적 유지관리를 위해서는 사면 붕괴의 가능성을 파악하는 것이 필요하다. 특히 암반사면은 암석의 취성적인 특성으로 인해 변위 계측 등과 같은 일반적인 방법으로는 파괴발생이전에 사전징후를 감지하기 매우 어렵다. 그러나 AE 기법을 사면에 적용한다면 변위가 발생하기 전에 파괴 시 발생된 AE 신호를 분석함으로써 일반적인 계측 방법보다 초기에 상태파악이 가능할 것이다. 본 논문에서는 한국의 암반사면 중 붕괴 이력을 가지고 있는 사면에 AE 기법을 적용하여 사면붕괴 가능성을 파악하였다. 그 결과 붕괴위험이 있는 사면에 AE 기법을 적용하면 사면의 위치별 붕괴 가능성을 가능할 것으로 판단된다.

Keywords

References

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