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

Korean Tunnelling and Underground Space Association (한국터널지하공간학회)
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A study on key factors of ground surface settlement due to shield TBM excavation using 3-dimension numerical analysis

3차원 수치해석을 이용한 Shield TBM 굴진시 지표침하 주요 영향요소 분석

  • 전기찬 (대한건설ENG 기술연구소) ;
  • 김동현 (대한건설ENG 기술연구소)
  • Received : 2015.04.15
  • Accepted : 2015.05.06
  • Published : 2015.05.31
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Abstract

This paper is to perform 3-dimensional numerical analysis considering face pressure, backfill pressure, excavation length, soil model and element size for selecting key factors of ground surface settlement due to shield TBM advancement. According to the numerical analysis results, backfill pressure and soil model are governing factors inducing ground surface settlement. To complement this study, the ground conditions and characteristics of the boring machine will be considered using numerical analysis.

본 연구는 Shield TBM 굴착시 지표침하에 대한 주요 요소를 선정하기 위하여 3차원 지반해석 프로그램을 이용하여 막장압, 뒤채움압, 굴진장, 지반모델 및 요소망에 대한 다양한 조건을 적용하여 수치해석을 수행하였다. 수치해석에 의한 지표침하 산정결과 뒤채움압과 지반모델조건이 가장 큰 영향을 미치는 요소로 판단되었으며 향후 지반조건 및 장비특성에 따른 사례를 추가하여 연구를 보완하고자 한다.

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References

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  2. LIM KEN CHAI (2003), "Three-dimensional finite element analysisof earth pressure balance tunnelling", national university of singapore, pp. 121-198.
  3. SVEN CHRISTIAN MO LLER. (2006), "Tunnel induced settlements and structural forces in linings", Eigenverlag des Instituts fur Geotechnik, pp. 108-111.