Tunnel and Underground Space (터널과지하공간)

Korean Society for Rock Mechanics and Rock Engineering (한국암반공학회)
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A Study on Performance-based Evaluation Method for Rock Slopes : Deduction of Evaluation Factors

암반비탈면의 성능기반 평가기법 연구 : 평가항목 도출

  • 이종건 (한국시설안전공단 시설안전연구소) ;
  • 석재욱 (한국시설안전공단 시설안전연구소) ;
  • 김홍균 (한국시설안전공단 시설안전연구소) ;
  • 김용수 (한국시설안전공단 시설안전연구소) ;
  • 문준식 (경북대학교 공과대학 토목공학과)
  • Received : 2015.02.10
  • Accepted : 2015.02.23
  • Published : 2015.02.28
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Abstract

In this study, the performance-based evaluation factors for rock slopes have been deducted using Delphi-method. Validity of the result was verified through factor analysis. Performance of rock slope is classified as soundness, stability and durability. Through the Delphi survey, 17 factors including discontinuity orientation are deducted for soundness, 4 factors and 3 factors are selected for stability and durability, respectively. Validation is conducted using Exploratory Factor Analysis (EFA) for 24 factors, and all factors are found to be valid. As a result of Exploratory Factor Analysis (EFA), 3-types of performance were subdivided into internal soundness, external soundness, risk, damage and durability of slopes and protection (reinforcement) facilities.

본 연구에서는 암반비탈면의 성능기반 평가방안을 개발하기 위해 델파이 기법을 이용하여 성능별 평가항목을 도출하였으며, 요인분석을 통해 최종 평가항목의 타당성을 검증하였다. 비탈면의 성능은 상태건전성, 안전성 그리고 내구성으로 분류하였다. 델파이 조사를 통해 상태건전성에는 절리방향, 배수조건 등 17개의 평가항목이 도출되었으며, 안전성에는 낙석발생 가능성, 인명피해 규모 등 4개의 평가항목이 도출되었다. 내구성에는 풍화도를 포함한 3개의 평가항목이 도출되었다. 델파이 조사를 통해 도출된 24개의 평가항목에 대해 탐색적 요인분석(EFA)을 실시한 결과, 24개의 평가항목 모두 타당성을 확보하고 있는 것으로 나타났다. 또한, 탐색적 요인분석 결과에 따라 3가지의 성능유형을 내적 상태건전성, 외적 상태건전성, 위험도, 피해도 그리고 지반 및 보호/보강시설의 내구성으로 세분류하였다.

Keywords

References

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