Journal of the Korean Geosynthetics Society (한국지반신소재학회논문집)

Korean Geosynthetics Society (한국지반신소재학회)
권호 표지
DOI QR코드

DOI QR Code

Numerical Study of Face Plate-Type EPB Shield TBM by Discrete Element Method

개별요소법을 활용한 면판형 토압식 쉴드TBM의 수치해석 연구

  • Lee, Chulho (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Chang, Soo-Ho (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Choi, Soon-Wook (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Park, Byungkwan (Smart City & Construction Engineering, University of Science and Technology) ;
  • Kang, Tae-Ho (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Sim, Jung Kil (Next Engineering & Service)
  • Received : 2017.11.19
  • Accepted : 2017.12.18
  • Published : 2017.12.30
Download PDF
⟨ Previous Next ⟩

Abstract

The Discrete Element Method (DEM) has been widely used in civil engineering as well as various industrial fields to simulate granular materials. In this study, DEM was adopted to predict the performance of the face plate-type earth pressure balance (EPB) shield TBM (Tunnel Boring Machine). An analysis of the TBM excavation performance was conducted according to two pre-defined excavation conditions with the different rotation speeds per minute (RPM) of the cutterhead. The TBM model which was used in this study has a 6.64 m of diameter and six spokes. Also, 37 precutters and 98 scrapers at an each spoke were modeled with a real-scale specification. From the analysis, compressive forces at the cutterhead face, shield and cutting tools, resistant torques at the cutterhead face, muck discharge rate and accumulated muck discharge by the screw auger were measured and compared.

개별요소법(Discrete Element Method, DEM)은 토목공학 등 입자형태의 재료를 다루는 분야에서 다양하게 이용된다. 본 연구에서는 DEM 기법에 근거한 입자 역학 전용 해석 상용 소프트웨어를 사용하여 면판형 토압식 쉴드TBM 굴착성능을 평가하기 위한 수치 해석을 수행하였다. TBM에 대한 해석은 커터헤드의 회전속도가 다른 두 가지 조건에 대해 수행되었다. 해석 모델의 직경은 6.64m이며 6개의 스포크를 갖는 것으로 작성되었다. 또한, 37개의 프리커터와 98개의 스크래퍼가 각 스포크에 모델링 되었다. 해석결과를 통해, 커터헤드면과 쉴드, 절삭 도구에 작용하는 압축력과 커터헤드면에서 발생하는 저항 토크의 크기를 검토하였으며 스크루 오거를 통해 배출되는 토사량에 대해서는 각각 단위 시간당 배토량과 누적 배토량을 검토하였다.

Keywords

References

  1. Amoun, S., Sharifzadeh, M., Shahriar, K., Rostami, J. and Azali, S. T. (2017), "Evaluation of tool wear in EPB tunneling of Tehran Metro, Line 7 Expansion", Tunnelling and Underground Space Technology, Vol.61, January 2017, pp.233-246. https://doi.org/10.1016/j.tust.2016.11.001
  2. Avunduk, E. and Copur, H. (2018), "Empirical modeling for predicting excavation performance of EPB TBM based on soil properties", Tunnelling and Underground Space Technology, Vol.71, January 2018, pp.340-353. https://doi.org/10.1016/j.tust.2017.09.016
  3. Bandini, A., Berry, P., Cormio, C., Colaiori, M. and Lisardi, A. (2017), "Safe excavation of large section tunnels with Earth Pressure Balance Tunnel Boring Machine in gassy rock masses: The Sparvo tunnel case study", Tunnelling and Underground Space Technology, Vol.67, August 2017, pp.85-97. https://doi.org/10.1016/j.tust.2017.05.001
  4. Cleveland, W. S. (1979), "Robust locally weighted regression and smoothing scatterplots", Journal of the American Statistical Association, Vol.74, No.368, pp.829-836. https://doi.org/10.1080/01621459.1979.10481038
  5. Copur, H., Aydin, H., Bilgin, N., Balci, C., Tumac, D. and Dayanc, C. (2014), "Predicting performance of EPB TBMs by using a stochastic model implemented into a deterministic model", Tunnelling and Underground Space Technology, Vol.42, May 2014, pp.1-14. https://doi.org/10.1016/j.tust.2014.01.006
  6. Culi, L., Pujades, E., Vázquez-Suñé, E. and Jurado, A. (2016), "Modelling of the EPB TBM shield tunnelling advance as a tool for geological characterization", Tunnelling and Underground Space Technology, Vol.56, June 2016, pp.12-21. https://doi.org/10.1016/j.tust.2016.02.017
  7. Cundall, P. A. and Strack, O. D. (1979), "A discrete numerical model for granular assemblies", Geotechnique, Vol.29, No.1, pp.47-65. https://doi.org/10.1680/geot.1979.29.1.47
  8. Di Maio, F. P. and Di Renzo, A. (2005), "Modelling particle contacts in distinct element simulations: linear and non-linear approach", Chemical Engineering Research and Design, Vol.83, No.11, pp.1287-1297. https://doi.org/10.1205/cherd.05089
  9. Di Renzo, A. and Di Maio, F. P. (2004), "Comparison of contact-force models for the simulation of collisions in DEM-based granular flow codes", Chemical Engineering Science, Vol.59, No.3, pp.525-541. https://doi.org/10.1016/j.ces.2003.09.037
  10. Di Renzo, A. and Di Maio, F. P. (2005), "An improved integral non-linear model for the contact of particles in distinct element simulations", Chemical Engineering Science, Vol.60, No.5, March 2005, pp.1303-1312. https://doi.org/10.1016/j.ces.2004.10.004
  11. EDEM. (2017), Generic EDEM Material Model (GEMM) Database, EDEM solution, Edinburgh.
  12. Gharahbagh, E. A., Mooney, M. A., Frank, G., Walter, B. and Di Ponio, M. A. (2013), "Periodic inspection of gauge cutter wear on EPB TBMs using cone penetration testing", Tunnelling and Underground Space Technology, Vol.38, September 2013, pp.279-286. https://doi.org/10.1016/j.tust.2013.07.013
  13. Hertz, H. (1882), "Uber die Beruhrung fester elastischer Korper", Journal fur die reine und angewandte Mathematik, Vol.92, No.1881, pp.156-171.
  14. ITA, W. (2000), Mechanized Tunnelling: Recommendations and Guidelines for Tunnel Boring Machines (TBMs), Publication No. MAI 2001 - ISSN 1267-8422, International Tunnelling Association, Lausane, Switzerland.
  15. KICT. (2015), Development of optimized TBM cutterhead design method and high-performance disc cutter, Publication No. ISBN 979-11-954377-2-6, Korea Agency for Infrastructure Technology Advancement, Anyang-si, Republic of Korea.
  16. Maidl, U. and Comulada, M. (2011), "Prediction of EPB shield performance in soils", Proc. of the In Rapid Excavation and Tunneling Conference, January 2011, pp.1083-1091.
  17. Maynar, M. J. and Rodriguez, L. E. (2005), "Discrete numerical model for analysis of earth pressure balance tunnel excavation", Journal of Geotechnical and Geoenvironmental Engineering, Vol.131, No.10, pp.1234-1242. https://doi.org/10.1061/(ASCE)1090-0241(2005)131:10(1234)
  18. Mindlin, R. D. (1949), "Compliance of elastic bodies in contact", Journal of Applied Mechanics, Vol.16, pp.259-268.
  19. Mindlin, R. D. and Deresiewicz, H. (1953), "Elastic spheres in contact under varying oblique forces", Journal of Applied Mechanics, Vol.20, pp.327-344.
  20. Mori, L., Alavi, E., Hagan, B. and Di Ponio, M. A. (2017), "Wear of Cutting Tools on an EPB TBM Tunneling Through Glacial Soils", Proc. of the In Rapid Excavation and Tunneling Conference, San Diego, pp.25-36.
  21. Peila, D., Picchio, A. and Chieregato, A. (2013), "Earth pressure balance tunnelling in rock masses: Laboratory feasibility study of the conditioning process", Tunnelling and Underground Space Technology, Vol.35, April 2013, pp.55-66. https://doi.org/10.1016/j.tust.2012.11.006
  22. Peng, B. (2014), Discrete element method (DEM) contact models applied to pavement simulation, Ph.D Thesis, Virginia Polytechnic Institute and State University, pp.19-23.
  23. Sakaguchi, H., Ozaki, E. and Igarashi, T. (1993), "Plugging of the flow of granular materials during the discharge from a silo", International Journal of Modern Physics B, Vol.7, No.09n10, pp.1949-1963. https://doi.org/10.1142/S0217979293002705
  24. Tsuji, Y., Tanaka, T. and Ishida, T. (1992), "Lagrangian numerical simulation of plug flow of cohesionless particles in a horizontal pipe", Powder Technology, Vol.71, No.3, pp.239-250. https://doi.org/10.1016/0032-5910(92)88030-L
  25. Wu, L. and Liu, C. (2014), "Modeling of shield machine tunneling experiment by discrete element method", Applied Mechanics and Materials, Vols.556-562, pp.1200-1204. https://doi.org/10.4028/www.scientific.net/AMM.556-562.1200
  26. Wu, L., Guan, T. and Lei, L. (2013), "Discrete element model for performance analysis of cutterhead excavation system of EPB machine", Tunnelling and Underground Space Technology, Vol.37, August 2013, pp.37-44. https://doi.org/10.1016/j.tust.2013.03.003

Cited by

  1. 개별요소법을 활용한 경사각에 따른 스크루 컨베이어 모델 성능 평가 vol.29, pp.6, 2019, https://doi.org/10.7474/tus.2019.29.6.379
  2. TBM 운전조건을 고려한 스포크형 쉴드TBM의 굴진모사 연구 vol.29, pp.6, 2017, https://doi.org/10.7474/tus.2019.29.6.456
  3. Discrete-Element Analysis of the Excavation Performance of an EPB Shield TBM under Different Operating Conditions vol.11, pp.11, 2017, https://doi.org/10.3390/app11115119