Study on the Stability of Large Cross-River Shield Tunnel Face with Seepage

Abstract:

By 3D numerical analysis, the seepage force on the tunnel face was obtained and shows linearly increasing trend with the water level. By considering the average seepage force on the wedge boundary of 3D trapezoidal wedge model, the limit support pressure to keep stability of tunnel face under seepage condition was obtained. The total limit support pressure increases almost linearly with the water level. In order to consider the deformation seepage coupling effect, the 3D coupled deformation and seepage numerical analysis was further used to investigate the influence of the water level on the failure of tunnel face, the results show the failure mode changes with the increase of water level, and the limit support pressure increases nonlinearly with the water level.

• Periodical: Applied Mechanics and Materials (Volumes 405-408)
• Pages: 1371-1374
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.405-408.1371
• Online since: September 2013
• Authors: Xi Lin Lu, Feng Di Li
• Keywords: Cross-River Shield Tunnel, Face Stability, Limit Support Pressure, Seepage

References

[1] Meguid, M.A., Saada, O., Nunes, M.A. and Mattar, J., Physical modeling of tunnels in soft ground: A review. Tunneling and Underground Space Technology. Vol. 23(2008), pp.185-198.

DOI: 10.1016/j.tust.2007.02.003

[2] Lu, X., Huang, M. and Wang, H. Face stability analysis of plane strain tunnel in limit theorem. in Recent Developments of Geotechnical Engineering, Japanese Geotechnical Society. Okinawa, Japan. (2010), pp.188-193.

[3] Vermeer, P.A., Ruse, N. and Marcher, T., Tunnel heading stability in drained ground. Felsbau. Vol. 20(2002), pp.8-18.

[4] Hong, E.S., Park, E.S., Shin, H.S. and Kim, H. -M., Effect of a front high hydraulic conductivity zone on hydrological behavior of subsea tunnels. Journal of Civil Engineering, KSCE. Vol. 14(2010), pp.699-707.

DOI: 10.1007/s12205-010-0838-5

[5] Anagnostou, G. and Kovári, K., Face stability conditions with earth-pressure-balanced shields. Tunnelling and Underground Space Technology. Vol. 11(1996), pp.165-173.

DOI: 10.1016/0886-7798(96)00017-x

[6] Lee, I.M., Lee, J.S. and Nam, S.W., Effect of seepage force on tunnel face stability reinforced with multi-step pipe grouting. Tunneling and Underground SpaceTechnology. Vol. 19(2004), pp.551-565.

DOI: 10.1016/j.tust.2004.01.003

[7] Wang, H.R., Lu, X.L., Liu, Y.L. and Huang, M.S. Analysis of face stability of shield tunnel under seepage condition. in GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering. Oakland, California, United States. (2012).

DOI: 10.1061/9780784412121.328

[8] Chen, Z. -Y., Comments on "Finite element calculation on circular slip of earth slope under seepage action. Chinese Journal of Geotechnical Engineering. Vol. 24(2002), pp.394-396 (in Chinese).