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

Korean Tunnelling and Underground Space Association (한국터널지하공간학회)
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Waterproofing performance evaluation according to the number of layer for shield TBM segment hydrophilic rubber waterstop

쉴드 TBM 세그먼트 지수재의 배열수 변화에 따른 방수성능 평가

  • Ham, Soo-Kwon (Dept. of Civil and Environmental Engineering, Konkuk University) ;
  • Jung, Hoon (Dept. of Civil and Environmental Engineering, Konkuk University) ;
  • Kim, Beom-Ju (Dept. of Civil and Environmental Engineering, Konkuk University) ;
  • Jeong, Kyeong-han (The Dream E & C) ;
  • Lee, Seok-Won (Dept. of Civil and Environmental Engineering, Konkuk University)
  • 함수권 (건국대학교 사회환경공학부) ;
  • 정훈 (건국대학교 사회환경공학부) ;
  • 김범주 (건국대학교 사회환경공학부) ;
  • 정경한 (더드림이앤씨) ;
  • 이석원 (건국대학교 사회환경공학부)
  • Received : 2019.11.05
  • Accepted : 2019.12.13
  • Published : 2020.01.31
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Abstract

The interest in the use of shield TBM (Tunnel Boring Machine) on the tunnel excavation has been increased rapidly in Korea. The shield TBM tunnel is generally designed as non-drainage tunnel. Consequently, if water leakage through the segment joints happens, big problems on the usage and stability of tunnel can be occurred. In this study, the variation of waterproof capacity of hydrophilic rubber waterstop by the construction error and excessive displacement of segment was studied. In particular, the waterproof capacity of each of single and double layer arrangements of hydrophilic rubber waterstop was examined to verify the efficiency of the double layer arrangement. The test results show that the single layer and double layer hydrophilic rubber waterstop showed the same waterproof performance. hydrophilic rubber waterstop has favorable on the offset, however unfavorable on the gap.

최근 국내에서는 쉴드 TBM (Tunnel Boring Machine)을 이용한 터널 굴착에 대한 관심이 크게 증가하고 있다. 쉴드 TBM 터널은 비배수 터널로써 세그먼트 이음부에서 누수가 발생할 경우에는 터널의 사용성 및 안정성에 문제가 될 수 있다. 본 연구에서는 쉴드 TBM 터널의 세그먼트 시공 시 시공오차 및 세그먼트 과다변형에 의한 수팽창 지수재의 방수 성능을 검토하였다. 특히, 수팽창 지수재 1열 배열 및 2열 배열 각각에 대하여 방수 성능을 검토하여, 2열배열의 효율성을 검증하였다. 실험결과, 1열 배열 및 2열 배열 수팽창 지수재는 동일한 방수 성능을 보였다. 즉, 1열 배열 및 2열 배열 모두, 수팽창 지수재는 엇갈림에 대해서는 대응성이 좋으나, 틈새 간격에 대해서는 대응성이 불리한 것으로 나타났다.

Keywords

References

  1. Choi, W.Y., Lee, H.P., Jun, G.C., Lee, S.W. (2014), "Evaluation of waterproof and durability of hydrophilic waterstop", Journal of Korean Tunnelling and Underground Space Association, Vol. 16, No. 2, pp. 117-124. https://doi.org/10.9711/KTAJ.2014.16.2.117
  2. Heo, S.M., Jung, H., Lee, S.W. (2018), "Waterproofing performance evaluation according to each waterproofing material due to segment construction error", Journal of Korean Tunnelling and Underground Space Association, Vol. 20, No. 6, pp. 1023-1037. https://doi.org/10.9711/KTAJ.2018.20.6.1023
  3. Hyun, K.C., Min, S.Y., Moon, J.B., Jeong, G.H., Lee, I.M. (2012), "Risk management applicable to shield TBM tunnel: I. Risk factor analysis", Journal of Korean Tunnelling and Underground Space Association, Vol. 14, No. 6, pp. 667-681. https://doi.org/10.9711/KTAJ.2012.14.6.667
  4. Kim, S.H., Kim, W.K., Lee, H.Y. (2013), "Effect of segment thickness during shield TBM tunnelling in case study", Journal of Korean Tunnelling and Underground Space Association, Vol. 15, No. 3, pp. 311-320. https://doi.org/10.9711/KTAJ.2013.15.3.311
  5. Kim, Y.I., Hencher, S.R., Yoon, Y.H., Cho, S.K. (2002), "Determination of the construction method for Young Dong tunnel by risk assessment", Journal of Korean Tunnelling and Underground Space Association, Vol. 4, No. 1, pp. 13-25.
  6. Lee, S.W., Jeoung, J.H., Hwang, J.H. (2009), "Evaluation of hydrophilic waterstop for shield TBM tunnel under high water pressure", Proceedings of the Korean Geo-Environmental Conference, Seoul, pp. 389-392.