Journal of Korean Tunnelling and Underground Space Association (한국터널지하공간학회 논문집)

Korean Tunnelling and Underground Space Association (한국터널지하공간학회)
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Effect of orientation of fracture zone on tunnel behavior during construction using model test

실내 모형실험을 통한 시공 중 파쇄대의 공간적 분포가 터널거동에 미치는 영향

  • Cho, Yun-Gyu (Dept. of Global Construction Engineering, Sungkyunkwan Univ.) ;
  • Shin, Seung-Min (Dept. of Global Construction Engineering, Sungkyunkwan Univ.) ;
  • Chung, Eun-Mok (Dept. of Civil&Envir. Engineering, Sungkyunkwan Univ.) ;
  • Choi, Jung-Hyuk (Dept. of Civil&Envir. Engineering, Sungkyunkwan Univ.) ;
  • Yoo, Chung-Sik (Dept. of Civil Engineering, Sungkyunkwan Univ.)
  • 조윤규 (성균관대학교 글로벌건설엔지니어링학과) ;
  • 신승민 (성균관대학교 글로벌건설엔지니어링학과) ;
  • 정은목 (성균관대학교 건설환경시스템공학과) ;
  • 최정혁 (성균관대학교 건설환경시스템공학과) ;
  • 유충식 (성균관대학교 건설환경시스템공학과)
  • Received : 2015.01.09
  • Accepted : 2015.03.13
  • Published : 2015.05.31
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Abstract

This paper presents the results of reduced scale model tests on the effect of fault zone characteristics on the tunnel deformation behavior. A series of model tests were carried out on deep tunnels considering different fault zone orientations and offset distance. The tunnelling process was simulated in the model tests using compressed air technique. During the tests, the tunnel and ground deformation were mainly monitored while reducing the pressure inside the tunnel and the relationship between the pressure level and the tunnel deformation were established. The results indicate that for a given offset distance the tunnel behavior is influenced the most when the fault zone dips vertically while smallest influence occurs when the fault zone dips 45 degrees.

본 논문에서는 축소 모형실험을 이용한 파쇄대의 공간적 분포 특성이 터널의 거동에 미치는 영향에 대한 내용을 다루었다. 모형실험 조건으로 터널과 파쇄대의 이격 거리 및 지표면과 이루는 경사에 대해서 실험을 수행하였다. 터널 시공 과정을 압축공기기법으로 모사하였으며 실험 중에 터널의 내부 압력을 제거 하는 동시에 터널 및 지반에 발생하는 변형을 모니터링 하였다. 실험 결과 파쇄대 이격 거리에 따라서 터널 거동에 영향을 미치며 파쇄대가 수직일 경우 터널에 가장 큰 영향이 발생하며 파쇄대 경사 45도에서 가장 작은 영향이 발생하는 것으로 나타났다.

Keywords

References

  1. HSE. (1996), "Safety of new austrian tunnelling method (NATM) tunnels", Health & Safety Executive, London, pp. 86.
  2. Hunag, F., Zhu, H., Xu, Q. (2013), "The effect of weak interlayer on the failure pattern of rock mass around tunnel. scaled model tests and numerical analysis", Tunnelling and Underground Space Technology, No. 35, pp. 207-218.
  3. ITA Working Group No.17 Reprot (2010), Long Tunnels at Great Depth, pp. 31.
  4. Kim, C.Y., Hong, S.W., Kim, K.Y., Baek, S.H. (2004), "Numerical analysis of the convergence behavior of the tunnel", Tunnel & Underground Space, Vol. 6, No. 3, pp. 183-197.
  5. Kim, C.Y., Kim, K.Y., Baek, S.H., Moon, H.K., Lee, S.D. (2006), "Numerical analysis on the effect of fractured zone on the displacement - behavior of tunnel", Tunnel & Underground Space, Vol. 16, No. 3, pp. 218-231.
  6. Kim, K.D., Lee, D.S., Jeong, S.S. (2013), "Analysis of earth pressure acting on vertical circular shaft considering aching effet(I)-a study on centrifuge model test", Journal of Korean Geotechnical Society, Vol 28, No. 2 pp. 23-31. https://doi.org/10.7843/kgs.2012.28.2.23
  7. Korea Institute of Construction Technology. (2009), Development of Technologies Minimizing and Preventing the Disaster on Tunnel Construction [VI].
  8. Korean Tunneling & Underground Space Association. (2010), Case Histories of Tunnel Collapse.
  9. Kun, M., Onargan, T. (2013), "Influence of the fault zone in shallow tunneling: A case study of Izmir Metro Tunnel", Tunnelling and Underground Space Technology, Vol. 33, No. 1, pp. 34-45. https://doi.org/10.1016/j.tust.2012.06.016
  10. Lee, D.S. (2011), "Behavior of new tunnel adjacent to weak zone by using scaled model test", Konkuk univ. Master degree.
  11. Matos, A.C., Sousa, L.R., Kleberger, J., Pinto, P.L. (2004), "Geotechnical risk in rock tunnels", Taylor and Francis, pp. 191.
  12. Shin, H.S., Lee, S.H., Bae, G.J. (2007), "Surveyof tunnel collapses", No. 33 Regular Conference of the Korean Society of Civil Engineers, pp. 2979-2982.
  13. Vlasov, S.N., Makovsky, L.V., Merkin, V.E. (2001), "Accident in transportation and subway tunnels", Construction to operation, Russian Tunnelling Association, Moscow, pp. 198.
  14. Yoo, C. (2013), "Interaction between tunneling and bridge foundation - A 3D numeical interaction", Computers and Geotechnics, Vol 49, No. 3, pp. 70-78. https://doi.org/10.1016/j.compgeo.2012.11.005
  15. Yoo, C., Lee, Y.L, Kim, S.H., Kim, H.T. (2010), "Tunnelling-induced ground settlements in a groundwater drawdown environment - A case study", Tunnelling and Underground Space Technology, Vol. 29, No. 3, pp. 69-77.

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