DOI QR코드

DOI QR Code

Model test on operation efficiency in the screw conveyor of shiled TBM in soft ground

축소모형시험을 통한 연약지반 shield TBM의 screw conveyor 배토효율에 관한 연구

  • 오태상 ((주)삼보기술단, 서울과학기술대학교 철도전문대학원) ;
  • 김상환 (호서대학교 토목공학과) ;
  • 김원경 (호서대학교 토목공학과) ;
  • 이혜윤 (호서대학교 토목공학과) ;
  • 신민호 (한국철도기술연구원)
  • Received : 2014.03.05
  • Accepted : 2014.03.18
  • Published : 2014.03.30

Abstract

This paper presents the screw conveyor operation efficiency of shield TBM in soft ground. In order to study the screw conveyor operation efficiency, the experimental and theoretical studies were carried out. In experimental study, the operating amounts of muck were examined and compared due to the screw conveyor operating parameters including types (Shaft and Ribbon screw), angles of screw and conveyor. The results obtained from the laboratory model tests were analysed and evaluated to suggest the most suitable muck operating parameters during the shield TBM tunnelling in soft ground. In conclusion, it is found the operation parameters to increase the screw conveyor efficiency. In addition, the information presented in this paper may be useful for developing the design technology of shield TBM in the future.

본 논문은 shield TBM의 버럭 배토장비인 screw conveyor의 최적 버럭 배토효율에 관한 연구이다. screw conveyor의 배토효율에 영향을 미치는 주요 Parameter인 screw 형태(Shaft식, Ribbon식), screw conveyor와 screw 각도의 영향을 분석하기 위하여 축소모형시험을 실시하였다. 축소모형시험을 통해 구한 버럭 배토 효율과 기존 이론식을 통해 구한 최적의 버럭 배토효율을 비교 분석하여 최적의 screw 형태, screw conveyor와 screw각도를 도출 할 수 있었다. 결론적으로 축소모형시험을 통하여 screw conveyor 설계인자들에 대하여 제시하였다. 또한 이 연구 결과는 향후 shield TBM 기술을 발전시키는데 유용할 것으로 기대된다.

Keywords

Acknowledgement

Supported by : 한국건설교통기술평가원

References

  1. Kim, S.H., Kim, J.D., Park, I.J. (2011), "An experimental study on screw conveyor system of EPB shield TBM", Korean Tunnelling and Underground Space Association, Vol. 13, No. 6, pp. 519-530.
  2. Kim, S.H., Oh, T.S., Park, S.H., Lee, C.Y., Park, J.K. (2014), "Development of simulation eguipment system on EPB shield TMB hood operation", Korean Tunnelling and Under ground Space Association, Vol. 16, No. 2, pp. 193-201. https://doi.org/10.9711/KTAJ.2014.16.2.193
  3. Jang, K.G. (2008), "A study on Influence of the TBM Equipment Thrust on Segments during Excavation of Rockbed for Large-Diameter Shield Tunnel", Yonsei University.
  4. Korean Tunnelling and Underground Space Association (2008), "A series of Tunnel engineering 3 The mechanized tunneling techniques-Design", CIR, pp. 27-32, 156.
  5. Han, M.S., Kim, Y.J., Shin, I.J., Lee, Y.J., Shin, Y.S., Kim, S.H. (2013), "Simulation of shield TBM tunneling in soft ground by laboratory model test", Korean Tunnelling and Underground Space Association, Vol. 15, No. 5, pp. 483-496. https://doi.org/10.9711/KTAJ.2013.15.5.483
  6. Merritt, A.S., Mair, R.J. (2006), "Mechanics of tunnelling machine screw conveyor : model tests", Geotechnique, Vol. 56, No. 9, pp. 605-615. https://doi.org/10.1680/geot.2006.56.9.605
  7. Merritt, A.S., Mair, R.J. (2008), "Mechanics of tunnelling machine screw conveyor : a theoretical model", Geotechnique, Vol. 58, No. 2, pp. 79-94. https://doi.org/10.1680/geot.2008.58.2.79
  8. Roberts, A.W. (1999), "The influence of granular vortex motion on the volumetric performance of enclosed screw conveyors", Powder Technology, pp. 56-67.
  9. Bezuijen, A., Schaminee, P.E.L. (2001), "Simulation of the EPB-Shield TBM in model tests with foam as additive", Proceedings of Congress on Modern Tunnelling Science and Technology, pp. 935-940.
  10. Daniele Peila, Claudio Oggeri and Raffaele vinai (2007), "Screw conveyor device for laboratory tests on conditioned soil for EPB tunneling operations", Journal of Geotechnical and Geoenvironmental Engineering, Vol. 133, No. 12, pp. 1622-1625. https://doi.org/10.1061/(ASCE)1090-0241(2007)133:12(1622)
  11. Owen, P.J, Cleary, P.W. (2009), "Prediction of screw conveyor performance using the Discrete Element Method (DEM)", Powder Technology, Vol. 193, No. 3, pp. 274-288. https://doi.org/10.1016/j.powtec.2009.03.012
  12. Raffaele Vinai, Claudio Oggeri and Daniele Peila (2008), "Soil conditioning of sand for EPB applications: A laboratory research", Tunnelling and Underground Space Technology, Vol. 23, No. 3, pp. 308-317. https://doi.org/10.1016/j.tust.2007.04.010
  13. MIGUEL ANGEL PENA DUARTE (2007), "Foam as a soil conditioner in tunnelling:physical and mechanical properties of conditioned sands", The University of Oxford.
  14. 社団法人 地盤工学会 (1997), "シールド工法の調査, 設計から施工まで", 日本, pp. 145.