Browse > Article
http://dx.doi.org/10.9711/KTAJ.2015.17.3.333

Numerical simulation for surface settlement considering face vibration of TBM tunnelling in mixed-face condition  

Kwak, Chang-Won (Korea District Heating Engineering Co. Ltd.)
Park, Inn-Joon (Department of Civil Engineering, Hanseo University)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.17, no.3, 2015 , pp. 333-339 More about this Journal
Abstract
In this paper, the surface settlement resulted from the shallow TBM tunnelling has been numerically simulated. TBM tunnelling is especially used in urban area to avoid serious vibration and noise caused by explosion in NATM. Surface settlement is one of the most important problems encountered in all tunnelling and critical in urban areas. In this study, face vibration of TBM excavation is considered to estimate surface settlement trend according to TBM extrusion. The dynamic excavation forces are calculated by total torque on the TBM cutterhead in mixed-face of soil and weathered rock condition with shallow depth. A 3-dimensional FDM code is employed to simulate TBM tunnelling and mechanical-dynamic coupling analysis is performed. The 3D numerical analysis results showed that dynamic settlement histories and trend of surface settlement successfully. The maximum settlement occurred at the excavation point located at 2.5D behind the face, and the effect of face vibration on the surface settlement was verified in this study.
Keywords
Surface settlement; TBM; Face vibration; Mixed-face; Mechanical-dynamic coupling analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Jafari, M.J., Gharari, N., Sheikhi, H.R. (2009), "The reliability of a tunnel boring machine", International Journal of Occupational Hygiene, Vol. 1, No. 1, pp. 21-26.
2 Kim, Y.M., Lee, S.D., Choo, S.Y., Koh, S.Y. (2013), "An experimental study on shield TBM tunnel face stability in soft ground", Journal of the Korean Society for Railway, Vol. 16, No. 1, pp. 47-51.   DOI
3 Kim, C.P. (2004), "A study on the load distribution factor in two-dimensional analysis model for the simulation of three-dimensional effect of EPB shield tunnel", M. S Dissertation, Kyonggi University.
4 Steingrimsson, J.H., Grøv, E., Nilsen, B. (2002), "The significance of mixed-face conditions for TBM performance", World Tunnelling, Vol. 15, No. 9, pp. 435-441
5 Zhang, K., Yu, H., Liu, Z., Lai, X. (2010), "Dynamic characteristic analysis of TBM tunnelling in mixed-face conditions", Simulation Modeling Practice and Theory, Vol. 18, pp. 1019-1031.   DOI