DOI QR코드

DOI QR Code

Roof collapse of shallow tunnel in layered Hoek-Brown rock media

  • Yang, X.L. (School of Civil Engineering, Central South University) ;
  • Li, K.F. (School of Civil Engineering, Central South University)
  • 투고 : 2015.10.12
  • 심사 : 2016.09.06
  • 발행 : 2016.12.12

초록

Collapse shape of tunnel roof in layered Hoek-Brown rock media is investigated within the framework of upper bound theorem. The traditional collapse mechanism for homogeneous stratum is no longer suitable for the present analysis of roof stability, and it would be necessary to propose a curve failure mode to describe the velocity discontinuity surface in layered media. What is discussed in the paper is that the failure mechanism of tunnel roofs, consisting of two different functions, is proposed for layered rock media. Then it is employed to investigate the impending roof failure. Based on the nonlinear Hoek-Brown failure criterion, the collapse volume of roof blocks are derived with the upper bound theorem and variational principle. Numerical calculations and parametric analysis are carried out to illustrate the effects of different parameters on the shape of failure mechanism, which is of overriding significance to the stability analysis of tunnel roof in layered rock media.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation

참고문헌

  1. Chen, W.F. (1975), Limit Analysis and Soil Plasticity, Elsevier Science, Amsterdam, The Netherlands.
  2. Davis, E.H., Dunn, M.J., Mair, R.J. and Seneviratine, H.N. (1980), "The stability of shallow tunnels and underground openings in cohesive material", Geotechnique, 30(4), 397-416. https://doi.org/10.1680/geot.1980.30.4.397
  3. Fahimifar, A., Ghadami, H. and Ahmadvand, M. (2015), "The ground response curve of underwater tunnels, excavated in a strain-softening rock mass", Geomech. Eng., Int. J., 8(3), 323-359. https://doi.org/10.12989/gae.2015.8.3.323
  4. Fraldi, M. and Guarracino, F. (2009), "Limit analysis of collapse mechanisms in cavities and tunnels according to the Hoek-Brown failure criterion", Int. J. Rock Mech. Min. Sci., 46(3), 665-673. https://doi.org/10.1016/j.ijrmms.2008.09.014
  5. Fraldi, M. and Guarracino, F. (2010), "Analytical solutions for collapse mechanisms in tunnels with arbitrary cross sections", Int. J. Solids Struct., 47, 216-223. https://doi.org/10.1016/j.ijsolstr.2009.09.028
  6. Hoek, E. and Brown, E.T. (1997), "Practical estimate the rock mass strength", Int. J. Rock Mech. Min. Sci., 34(7), 1165-1186. https://doi.org/10.1016/S1365-1609(97)80069-X
  7. Huang, F., Zhang, D.B. and Sun, Z.B. (2012), "Upper bound solutions of stability factor of shallow tunnels in saturated soil based on strength reduction technique", J. Central South Univ. Technol., 19(7), 2008-2015. https://doi.org/10.1007/s11771-012-1238-4
  8. Huang, F., Qin, C.B. and Li, S.C. (2013), "Determination of minimum cover depth for shallow tunnel subjected to water pressure", J. Central South Univ., 20(8), 2307-2313. https://doi.org/10.1007/s11771-013-1738-x
  9. Leca, E. and Dormieux, L. (1990), "Upper and lower bound solutions for the face stability of shallow circular tunnels in frictional material", Geotechnique, 40(4), 581-606. https://doi.org/10.1680/geot.1990.40.4.581
  10. Li, S.C., Wang, J.H., Chen, W.Z., Li, L.P., Zhang, Q.Q. and He, P. (2016), "Study on mechanism of macro failure and micro fracture of local nearly horizontal stratum in super-large section and deep buried tunnel", Geomech. Eng., Int. J., 11(2), 253-267. https://doi.org/10.12989/gae.2016.11.2.253
  11. Mohammadi, M. and Tavakoli, H. (2015), "Comparing the generalized Hoek-Brown and Mohr-Coulomb failure criteria for stress analysis on the rocks failure plane", Geomech. Eng., Int. J., 9(1), 115-124.
  12. Serrano, A. and Olalla, C. (1998), "Ultimate bearing capacity of an anisotropic discontinuous rock mass, Part one: basic modes of failure", Int. J. Rock Mech. Min. Sci., 35(3), 301-324. https://doi.org/10.1016/S0148-9062(97)00337-9
  13. Serrano, A. and Olalla, C. (1999), "Tensile resistance of rock anchors", Int. J. Rock Mech. Min. Sci., 36(4), 449-474.
  14. Sofianos, A.I. (2003), "Tunnelling Mohr-Coulomb strength parameters for rock masses satisfying the generalized Hoek-Brown criterion", Int. J. Rock Mech. Min. Sci., 40(5), 435-440. https://doi.org/10.1016/S1365-1609(03)00017-0
  15. Sofianos, A.I. and Halakatevakis, N. (2002), "Equivalent tunnelling Mohr-Coulomb strength parameters from given Hoek-Brown ones", Int. J. Rock Mech. Min. Sci., 39(1), 131-137. https://doi.org/10.1016/S1365-1609(02)00014-X
  16. Soubra, A.H., Dias, D., Emeriault, F. and Kastner, R. (2008), "Three-dimensional face stability analysis of circular tunnels by a kinematical approach", Proceedings of the GeoCongress, Characterization, Monitoring, and Modelling of Geosystems, New Orleans, LA, USA, March, pp. 9-12.
  17. Yang, X.L. and Pan, Q.J. (2015), "Three dimensional seismic and static stability of rock slopes", Geomech. Eng., Int. J., 8(1), 97-111. https://doi.org/10.12989/gae.2015.8.1.097
  18. Yang, X.L. and Yan, R.M. (2015), "Collapse mechanism for deep tunnel subjected to seepage force in layered soils", Geomech. Eng., Int. J., 8(5), 741-756. https://doi.org/10.12989/gae.2015.8.5.741
  19. Yang, X.L., Xu, J.S., Li, Y.X. and Yan, R.M. (2016), "Collapse mechanism of tunnel roof considering joined influences of nonlinearity and non-associated flow rule", Geomech. Eng., Int. J., 10(1), 21-35. https://doi.org/10.12989/gae.2016.10.1.021
  20. Zhang, J.H. and Wang, C.Y. (2015), "Energy analysis of stability on shallow tunnels based on nonassociated flow rule and non-linear failure criterion", J. Central South Univ., 22(3), 1070-1078. https://doi.org/10.1007/s11771-015-2618-3

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