Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)

Korean Geotechnical Society (한국지반공학회)
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A Study on the Behavior of a Closely-spaced Tunnel by Using Particle Flow Code

입자 유동 해석(PFC)을 통한 근접터널의 거동에 관한 연구

  • Suh, Byung-Wook (Tunnel & Underground Dept., Teso Engineering Corporation) ;
  • Jo, Seon-Ah (Dept. of Civil and Environmental System Engineering, Konkuk University) ;
  • Jung, Seon-Ah (Dept. of Civil and Environmental System Engineering, Konkuk University) ;
  • Lee, Seok-Won (Dept. of Civil and Environmental System Engineering, Konkuk University)
  • 서병욱 ((주) 태조엔지니어링 지반사업부) ;
  • 조선아 (건국대학교 사회환경시스템공학과) ;
  • 정선아 (건국대학교 사회환경시스템공학과) ;
  • 이석원 (건국대학교 사회환경시스템공학과)
  • Published : 2008.03.28
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Abstract

In general, it is considered that a pillar between closely-spaced tunnel is sensitive for stress concentration. Stability of a pillar is key factor for excavation of closely-spaced tunnel. In this paper, the study is focused on tracing the behaviors, displacement and plotting damages around tunnels that is modelled with Particle Flow Code, $PFC^{2D}$. Parametric study was performed with changing distance between center of tunnels and coefficient of earth pressure(K). Scaled-model tests were also carried out to validate a numerical analysis model. It was found that $PFC^{2D}$ could show dynamic visualized result in quite good agreement with the experimental test.

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