The Journal of Engineering Geology (지질공학)

The Korean Society of Engineering Geology (대한지질공학회)
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Case Study on Rock Slope Failures Caused by Geologic Structures

지질구조 영향에 의한 암반비탈면 붕괴 사례 연구

  • Park, Boo Seong (Ssangyong Engineering & Construction Co., Ltd.) ;
  • Cho, Hyun (Ssangyong Engineering & Construction Co., Ltd.) ;
  • Park, Dong In (Ssangyong Engineering & Construction Co., Ltd.) ;
  • Kim, Jun Ho (Ssangyong Engineering & Construction Co., Ltd.) ;
  • Choi, Jae Ho (Ssangyong Engineering & Construction Co., Ltd.)
  • Received : 2017.11.10
  • Accepted : 2017.12.27
  • Published : 2017.12.30
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Abstract

This study aims to present cases of rock slope failures caused by geological structures. Status of slope failures, results of cause analysis and stabilizing methods are introduced, focusing primarily on rock slope failures caused by specific geologic structures, such as intersection of faults infilled with clay, foliation and fault shear zone by dike intrusion and deep-seated clayey layer along lithologic boundary. Detailed geological survey, geophysical exploration and boring survey were conducted for cause analysis. Stabilizing method to prevent further slope failures and to ensure long-term stability of slopes were established, considering characteristics of geological structures, types of failure and geological conditions.

본 연구에서는 암반비탈면을 대상으로 붕괴에 큰 영향을 미치는 주요 지질구조에 의한 붕괴현황, 원인분석 및 대책에 관한 사례를 소개하고자 한다. 다양한 지질구조에 의한 암반비탈면 붕괴 사례 중 단층점토가 협재된 단층면의 교차에 의한 붕괴, 엽리 및 암맥관입접촉부 파쇄대에 의한 붕괴 및 심부 암종경계면(점토대)에 의한 붕괴 등에 대한 사례를 중심으로 정밀지표지질조사, 물리탐사 및 시추조사 등을 통한 붕괴원인 분석을 실시하였으며, 대상 비탈면의 지질구조적 특성, 붕괴유형 및 지반조건 등을 고려하여 추가적인 비탈면 활동을 방지하고 비탈면의 항구적인 안정성 확보를 위한 대책방안을 수립하고자 하였다.

Keywords

References

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  1. 지질횡단면도를 이용한 함탄층이암 비탈면의 안정성 검토 vol.31, pp.2, 2017, https://doi.org/10.7474/tus.2021.31.2.098