Waterproofing performance evaluation according to the number of layer for shield TBM segment hydrophilic rubber waterstop

Soo-Kwon Ham; Hoon Jung; Beom-Ju Kim; Kyeong-han Jeong; Seok-Won Lee

doi:10.9711/KTAJ.2020.22.1.047

All Issue

2020 Vol.22, Issue 1 Preview Page Next Page

Research Paper

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

31 January 2020. pp. 47-58

PDF XML

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.

Keywords

Hydrophilic rubber waterstop

Number of layer of waterstop

Shield TBM

Waterproofing

Segment lining

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.

키워드

수팽창지수재

지수재 배열수

쉴드 TBM

방수

세그먼트 라이닝

References

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.

10.9711/KTAJ.2014.16.2.117

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.

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.

10.9711/KTAJ.2012.14.6.667

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.

10.9711/KTAJ.2013.15.3.311

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.

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.

Information

Publisher :Korean Tunneling and Underground Space Association
Publisher(Ko) :한국터널지하공간학회
Journal Title :Journal of Korean Tunnelling and Underground Space Association
Journal Title(Ko) :한국터널지하공간학회 논문집
Volume : 22
No :1
Pages :47-58
Received Date : 2019-11-05
Revised Date : 2019-12-11
Accepted Date : 2019-12-13
DOI :https://doi.org/10.9711/KTAJ.2020.22.1.047

Journal of Korean Tunnelling and Underground Space Association ISSN:2233-8292(Print) 2287-4747(Online) 한국터널지하공간학회 논문집

All Issue