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

Korean Tunnelling and Underground Space Association (한국터널지하공간학회)
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Analysis of correlation between shield TBM construction field data and settlement measurement data

쉴드 TBM 시공데이터와 지반침하 계측데이터 간 상관성 분석

  • Jung, Ye-Rim (Dept. of Smartcity Engineering, Hanyang University) ;
  • Nam, Kyoung-Min (Dept. of Civil and Environmental System Engineering, Hanyang University) ;
  • Kim, Han-Eol (Dept. of Civil and Environmental System Engineering, Hanyang University) ;
  • Ha, Sang-Gui (Dept. of Civil and Environmental Engineering, Hanyang University) ;
  • Yun, Ji-Seok (Dept. of Smartcity Engineering, Hanyang University) ;
  • Cho, Jae-Eun (Dept. of Smartcity Engineering, Hanyang University) ;
  • Yoo, Han-Kyu (Dept. of Civil and Environmental Engineering, Hanyang University)
  • 정예림 (한양대학교 스마트시티공학과) ;
  • 남경민 (한양대학교 건설환경시스템공학과) ;
  • 김한얼 (한양대학교 건설환경시스템공학과) ;
  • 하상귀 (한양대학교 건설환경공학과) ;
  • 윤지석 (한양대학교 스마트시티공학과) ;
  • 조재은 (한양대학교 스마트시티공학과) ;
  • 유한규 (한양대학교 건설환경공학과)
  • Received : 2021.11.15
  • Accepted : 2022.01.05
  • Published : 2022.01.31
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Abstract

The demand for tunnel construction is increasing as part of underground space development due to urban saturation. The shield TBM method minimizes vibration and noise and minimizes ground deformation that occurs simultaneously with excavation, and shield TBM is generally applied to tunnel construction in urban areas. The importance of urban ground settlement prediction is increasing day by day, and in the case of shield TBM construction, ground deformation is minimized, but ground settlement due to tunnel excavation inevitably occurs. Therefore, in this study, the correlation between shield TBM, which is highly applicable to urban areas, and ground settlement is analyzed to suggest the shield TBM construction factors that have a major effect on ground settlement. Correlation analysis was performed between the shield TBM construction data and ground settlement measurement data collected at the actual site, and the degree of correlation was expressed as a correlation coefficient "r". As a result, the main construction factors of shield TBM affecting ground settlement were thrust force, torque, chamber pressure, backfill pressure and muck discharge. Based on the results of this study, it is expected to contribute to the presentation of judgment criteria for major construction data so that the ground settlement can be predicted and controlled in advance when operating the shield TBM in the future.

도심지 포화 상태로 인한 지하공간 개발의 일환으로 터널 건설의 수요가 증가하고 있다. 쉴드 TBM 공법은 진동과 소음을 최소화하며 굴착과 동시에 지반 변형을 최소화하는 공법으로, 국내 도심지 터널 시공은 대체로 쉴드 TBM이 적용되고 있다. 도심지 지반침하 예측의 중요성은 나날이 증가하고 있으며 쉴드 TBM 시공의 경우 지반 변형을 최소화 하지만 터널굴착에 의한 지반침하는 필연적으로 발생한다. 따라서 본 연구에서는 도심지 적용성이 높은 쉴드 TBM과 지반침하와의 상관성을 분석하여 지반침하에 주요한 영향을 미치는 쉴드 TBM 시공인자를 제시하고자 한다. 실제 현장에서 수집한 쉴드 TBM 시공데이터와 지반침하 계측데이터 간 상관관계 분석을 수행하였으며, 상관성 정도를 상관계수 "r"로 표현하였다. 그 결과 지반침하에 영향을 미치는 쉴드 TBM 주요 시공인자는 추력(Thrust force), 토크(Torque), 챔버압(Chamber pressure), 뒷채움압(Backfill pressure), 배토량(Muck discharge)으로 나타났다. 본 연구 결과를 통해 향후 쉴드 TBM 운용 시 지반침하를 사전에 예측 및 제어 할 수 있도록 주요 시공데이터에 대한 판단 기준 제시에 기여할 것으로 기대된다.

Keywords

Acknowledgement

본 연구는 국토교통부(국토교통과학기술진흥원) 건설기술연구사업의 '도심 지하 교통 인프라 건설 및 운영 기술 고도화 연구(21UUTI-B157787-02)' 연구단의 지원으로 수행되었으며 이에 깊은 감사를 드립니다.

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