A comparative analysis of prediction and measurement for reinforcement effect of face bolts

Kyoung-Won* Seo; Woong-Ku Kim; Ki-Hyun Baek; Jin-Woung Kim

doi:None

All Issue

2010 Vol.12, Issue 5 Preview Page Next Page

A comparative analysis of prediction and measurement for reinforcement effect of face bolts 수치해석 및 계측자료 분석을 통한 막장볼트의 보강효과에 관한 연구

30 September 2010. pp. 359-368

PDF XML

Abstract

Unlike in Korea where steel pipe-reinforced multistep grouting is of commonly used methods for tunnel reinforcement, face bolt method is more widely used due to its better workability and lower construction cost in other countries. In this paper, the effects of both methods after tunnel failure were numerically analyzed and verified based on the oversea construction experiences. As a result it is concluded that the face bolt method may be effective to reinforcement especially when there are some fractured zones developed in the face of tunnel.

Keywords

Tunnel collapse

Steel Pipe-reinforced Multistep Grouting

face bolt

axial displacement

국내의 경우 터널 지반보강중 강관다단그라우팅 공법이 폭넓게 사용되지만 해외의 경우 시공성 및 경제성이 우수한 막장볼트 공법이 흔히 적용되고 있다. 본 논문에서는 국내 도로터널 붕락 발생시 적용한 강관다단그라우팅 및 막장볼트의 적용효과에 대해서 수치해석을 통해 분석해 보았다. 또한 해외 시공사례의 계측데이터를 바탕으로 두 공법의 보강효과에 대해 분석해 보았다. 본 연구를 통해 막장 전면에 파쇄대가 발달하는 경우 페이스공법도 막장보강에 효과적임을 알 수 있었다.

키워드

터널붕락

강관다단그라우팅공법

막장볼트 공법

막장수평변위

References

1.김성열, 윤지선(2009), “터널막장 안정 평가기법 및 보강효과에 관한 수치해석적 연구”, 터널기술, 제11권, 제1호, pp. 11-22, 2009.

2.서경원, 배규진, Nishimura, K., Tsuyoshi, D.(2006a), “터널 안정화를 위한 막장볼트의 효율적 배치에 관한 수치해석적 연구”, 터널기술, Vol. 8, No. 2, pp. 141-149.

3.서경원, Nishimura, K., 김창용(2006b), “실내실험 및 수치해석을 이용한 페이스볼트의 최적타설 개수에 관한 연구”, 터널과 지하공간, 제16권, 제6호, pp. 467-475.

4.유충식, 양기호(2002), “Behaviour of a tunnel face reinforced with longitudinal pipes-Laboratory investigation”, 터널기술, Vol. 4, No. 2, pp. 91-99.

5.Geofront 연구회(2000), “장척볼트의 시공실적과 이의 분석”.

6.Kinashi, H. (2004), “A study on development and effect of the longitudinal face bolt, Kyoto University, Ph.D Thesis.

7.Lunardi, P., Forcaracci, A. (1992), “Tunnel face reinforce-ment in soft ground and controls”, Toward New Worlds in Tunnelling, Vieitez-Utesea & Montanez, pp. 897-908.

8.Pelia, D. (1994), “A theoretical study of reinforcement in-fluence on the stability of a tunnel face”, Geotechnical and Geological Engineering, 12, pp. 145-168.

9.Lunardi, P. (2000), “The design and construction of tunnels using the approach based on the analysis of con--trolled deformation in rocks and soils”, T&T International ADECO-RS Approach May, pp. 3-30.

10.Ikeguchi, M., Mashimo, H. (1997), “The effect of facebolt on face stability, Proceeding of tunnel engineering”, JSCE Vol. 7, pp. 93-98.

11.Hukushima, S. (1989), “Model test on prereinforce-ment of shallow tunnels in sandy ground”, JSCE Journal of Geotechnical and Geoenvironmental Engineering, Vol. 406 (III-11), pp. 79-86.

12.Yoo, C., Shin, H.K. (2003), “Deformation behaviour of tunnel face reinforced with longitudinal pipes-laboratory and numerical investigation, Tunnelling and Underground Space Technology”, Vol. 18, pp. 303-319.

13.Takahashi, S., (2005), “Centrifuge model test on Tunnel excavation (Part 3), Proceedings of tunnel Engineering”, JSCE, Vol. 15, pp. 9-14.

14.Ohtsuka, I. (2006), “Study on performance and appli-cation range of long face bolts, Proceedings of the 35th Symposium on Rock Mechanics”, JSCE, pp. 41-46.

15.徐景源(2006), “新たな切羽ボルトの打設パターンに関する研究”, 東京都立大学　学位論文, pp. 23~29.

https://cdn.apub.kr/journalsite/sites/kta/2010-012-05/N0550120502/images/PICF03A.gif

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 : 12
No :5
Pages :359-368
Received Date : 2010-06-28
Revised Date : 2010-08-20
Accepted Date : 2010-09-17

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

All Issue