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2019 Vol.29, Issue 6 Preview Page

Original Article

Study on Driving Simulation of Spoke-type Shield TBM Considering Operation Conditions

TBM 운전조건을 고려한 스포크형 쉴드TBM의 굴진모사 연구

Soon-Wook Choi1
,
Hyobum Lee2
,
Hangseok Choi3
,
Soo-Ho Chang4
,
Tae-Ho Kang5
,
Chulho Lee5*
최 순욱1
,
이 효범2
,
최 항석3
,
장 수호4
,
강 태호5
,
이 철호5*
1Senior Researcher, Department of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology
2Ph.D. Candidate, School of Civil Environmental and Architectural Engineering, Korea University
3Professor, School of Civil Environmental and Architectural Engineering, Korea University
4Senior Research Fellow, Construction Industry Promotion Department, Korea Institute of Civil Engineering and Building Technology
5Senior Researcher, Department of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology
1한국건설기술연구원 인프라안전연구본부 수석연구원
2고려대학교 건축사회환경공학부 박사수료
3고려대학교 건축사회환경공학부 교수
4한국건설기술연구원 건설산업진흥본부 선임연구위원
5한국건설기술연구원 인프라안전연구본부 수석연구원
* Corresponding Author
31 December 2019. pp. 456-467
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Abstract

In this study, the discrete element method was used to simulate the excavation of spoke-type shield TBM. The horizontal stress coefficient was used for the ground to simulate the increase of the horizontal stress according to the depth, and the driving conditions were set based on the torque generated from the cutterhead of the TBM to excavate within the operating range. That is, when the value of the torque generated at the cutterhead exceeds the given operating condition, the speed of excavation is constantly reduced, and conversely, the method of increasing the speed of excavation is considered. The change speed of the excavation was given the minimum change requirement in consideration of the driver's review time, and the change was possible according to the excavation conditions. In order to use these conditions, the user-subroutine was considered separately, and the results show that the DEM model were able to analyze the excavation within the considered operating range.

Keywords
Shield TBM
Discrete Element Method
Numerical analysis
Excavation
Tunnel

본 연구에서는 개별요소법을 사용하여 스포크형 쉴드TBM의 굴진을 모사하였다. 지반에 대해 수평응력계수를 사용하여 깊이에 따른 수평응력 증가를 모사하였고 TBM의 커터헤드에서 발생하는 토크를 기준으로 운전 조건을 부여하여 운전 범위 내에서 굴진을 하도록 설정하였다. 즉, 커터헤드에서 발생하는 토크의 값이 주어진 운전 조건을 넘어서는 경우 굴진속도를 일정하게 줄이고 반대로 운전 조건보다 낮은 경우에는 굴진 속도를 높이는 방안을 고려하였다. 이때 굴진속도 변경에는 운전자의 검토 시간을 고려하여 최소 변경 가능 요건을 부여하고 굴진 조건에 따라 이를 변경 가능하도록 하였다. 이러한 조건을 사용하기 위하여 사용자 프로그램을 별도로 작성하였으며, 결과를 통해 사전에 입력한 운전 범위 내에서 굴진 해석이 가능하였다.

키워드
쉴드TBM
개별요소법
수치해석
굴착
터널
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Information
  • Publisher :Korean Society for Rock Mechanics and Rock Engineering
  • Publisher(Ko) :한국암반공학회
  • Journal Title :Tunnel and Underground Space
  • Journal Title(Ko) :터널과 지하공간
  • Volume : 29
  • No :6
  • Pages :456-467
  • Received Date : 2019-11-11
  • Revised Date : 2019-11-26
  • Accepted Date : 2019-11-26
  • DOI :https://doi.org/10.7474/TUS.2019.29.6.456
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