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2021 Vol.23, Issue 6 Preview Page

Research Paper

Analysis on Downtime element of Gripper TBM based on field data

현장 데이터 분석을 통한 Gripper TBM의 Downtime 요소 분석

Jinsoo Park1
,
Ki-Il Song2*
박 진수1
,
송 기일2*
1Ph.D. Student, Dept. of Civil Engineering, Inha University, General Manager, TBM-Part, Civil Construction Team, HoBan Group
2Professor, Dept. of Civil Engineering, Inha University
1정회원, 인하대학교 토목공학과 박사과정, 호반그룹 토목공사팀 TBM-Part 수석
2정회원, 인하대학교 토목공학과 정교수
*Corresponding Author
30 November 2021. pp. 393-402
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Abstract

The first TBM introduced in Korea was the gripper TBM, which was applied to the Gudeok Waterway Tunnel in 1985. In the initial stage of the introduction of the gripper TBM, many applications were mainly focused on waterway tunnels (Tunnel Mechanized Construction Design, 2008). Currently, the construction range of gripper TBM in Korea is widely applied to not only waterway tunnels, but also subways, railway tunnels, and TBM+NATM expansion. Overseas, gripper TBM is generally applied, and even when NATM tunnel is applied, it is applied as an exploration tunnel because of the excellent advance rate of gripper TBM and used as an evacuation tunnel after completion. Due to the fast excavation speed, the application of the gripper TBM in the rock section of weathered rock or higher can minimize the environmental and civil complaints caused by creating a large number of work areas when planning long tunnels or mountain tunnels. In this study, the work process of the general gripper TBM was analyzed by analyzing the construction cycle and the gripper TBM with a diameter of 2.6~5.0 m, which was applied the most in Korea. Downtime was investigated and analyzed.

Keywords
Gripper TBM
Advance rate
Downtime

국내에 첫 도입된 TBM은 Gripper TBM으로 1985년 구덕 수로터널에 적용되었다. Gripper TBM 도입 초기단계에는 주로 수로터널 중심으로 적용 실적이 많았다(Tunnel Mechanized Construction Design, 2008). 현재 국내에서의 Gripper TBM의 시공 범위는 수로터널은 물론이고 지하철, 철도터널, TBM+NATM 확공에 이르기까지 매우 다양하게 적용되고 있다. 해외에서는 Gripper TBM의 적용은 일반적이며, NATM터널 적용 시에도 Gripper TBM의 우수한 굴진율 때문에 탐사터널로 적용하고 완공 후에는 피난터널로 사용한다. 빠른 굴착속도로 인하여 풍화암 이상의 암반구간에서 Gripper TBM의 적용은 장대터널이나 산악터널 계획 시 다수의 작업구를 만들어 발생하는 환경이나 민원문제를 최소화 할 수 있다. 본 연구에서는 국내에서 가장 많이 적용되었던 직경 2.6~5.0 m의 Gripper TBM의 월굴진율과 시공싸이클을 분석하여 일반적인 Gripper TBM의 작업과정을 분석하고 월굴진율 300 m/month 이하로 굴진율을 기록했던 프로젝트의 Downtime을 조사 ‧ 분석하였다.

키워드
그리퍼 TBM
굴진율
다운타임
References
1
Farrokh, E. (2018), "Introducing hard rock TBMs" downtime analysis model with reference to past case histories" data", Journal of Mining and Environment, Vol. 9, No. 2, pp. 457-472.
2
Jing, L.J., Li, J.B., Zhang, N., Chen, S., Yang, C., Cao, H.B. (2021), "A TBM advance rate prediction method considering the effects of operating factors", Tunnelling and Underground Space Technology, Vol. 107, 103620. 10.1016/j.tust.2020.103620
3
Ko, T.Y., Kim, T.K., Lee, D.H. (2019), "Statistical characteristics and rational estimation of rock TBM utilization", Tunnel and Underground Space, Vol. 29, No. 5, pp. 356-366.
4
Lee, H.L. (2020), Real-time prediction of penetration rate of shield TBM based on machine learning, Doctor of Philosophy, Inha University, pp. 6-23.
5
Tunnel Mechanized Construction Design (2008), Korean Tunnelling and Underground Space Association, CIR, Seoul, pp. 7.
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 : 23
  • No :6
  • Pages :393-402
  • Received Date : 2021-09-11
  • Revised Date : 2021-10-13
  • Accepted Date : 2021-10-13
  • DOI :https://doi.org/10.9711/KTAJ.2021.23.6.393
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