Geomechanics and Engineering

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Study on mechanism of macro failure and micro fracture of local nearly horizontal stratum in super-large section and deep buried tunnel

  • Li, Shu-cai (Research Center of Geotechnical and Structural Engineering, Shandong University) ;
  • Wang, Jian-hua (Research Center of Geotechnical and Structural Engineering, Shandong University) ;
  • Chen, Wei-zhong (Research Center of Geotechnical and Structural Engineering, Shandong University) ;
  • Li, Li-ping (Research Center of Geotechnical and Structural Engineering, Shandong University) ;
  • Zhang, Qian-qing (Research Center of Geotechnical and Structural Engineering, Shandong University) ;
  • He, Peng (Research Center of Geotechnical and Structural Engineering, Shandong University)
  • Received : 2015.03.12
  • Accepted : 2016.04.28
  • Published : 2016.08.25
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Abstract

The stability of surrounding rock will be poor when the tunnel is excavated through nearly horizontal stratum. In this paper, the instability mechanism of local nearly horizontal stratum in super-large section and deep buried tunnel is revealed by the analysis of the macro failure and micro fracture. A structural model is proposed to explain the mechanics of surrounding rock collapse under the action of stress redistribution and shed light on the macroscopic analytical approach of the stability of surrounding rock. Then, some highly effective formulas applied in the tunnel engineering are developed according to the theory of mixed-mode micro fracture. And well-documented field case is made to demonstrate the effectiveness and accuracy of the proposed analytical methods of mixed-mode fracture. Meanwhile, in order to make the more accurate judgment about yield failure of rock mass, a series of comprehensive failure criteria are formed. In addition, the relationship between the nonlinear failure criterion and $K_I$ and $K_{II}$ of micro fracture is established to make the surrounding rock failure criterion more comprehensive and accurate. Further, the influence of the parameters related to the tension-shear mixed-mode fracture and compression-shear mixed-mode fracture on the propagation of rock crack is analyzed. Results show that ${\sigma}_3$ changes linearly with the change of ${\sigma}_1$. And the change rate is related to ${\beta}$, angle between the cracks and ${\sigma}_1$. The proposed simple analytical approach is economical and efficient, and suitable for the analysis of local nearly horizontal stratum in super-large section and deep buried tunnel.

Keywords

Acknowledgement

Supported by : Nation Natural Science Foundation of China, Natural Science Foundation of Shandong Province of China

References

  1. Baker, R. (2004), "Nonlinear Mohr envelopes based on triaxial data", J. Geotech. Geoenviron. Eng., 130(5), 498-506. https://doi.org/10.1061/(ASCE)1090-0241(2004)130:5(498)
  2. Das, S.K. and Basudhar, P.K. (2009), "Comparison of intact rock failure criteria using various statistical methods", Acta Geotech., 4(3), 223-231. https://doi.org/10.1007/s11440-009-0088-1
  3. Kazerani, T. and Zhao, J. (2014), "A microstructure-based model to characterize micromechanical parameters controlling compressive and tensile failure in crystallized rock", Rock Mech. Rock Eng., 47(2), 435-452. https://doi.org/10.1007/s00603-013-0402-y
  4. Lee, I.M. and Nam, S.W. (2001), "The study of seepage forces acting on the tunnel lining and tunnel face in shallow tunnels", Tunn. Undergr. Space Technol., 16(1), 31-40. https://doi.org/10.1016/S0886-7798(01)00028-1
  5. Li, P.E. and Yin, Y.Q., (2010), "Modification of Drucker-Parger criterion in tensile shear region", Chinese J. Rock Mech. Eng., 29(supp1), 3029-3033.
  6. Li, C.G., Zheng, H., Ge, X.R. and Wang, S.L. (2005), "Research on two-parameter parameter parabolic mohr strength criterion and its damage regularity", Chinese J. Rock Mech. Eng., 24(24), 4428-4433.
  7. Li, S.C., Hu, C. and Li, L.P. (2013), "Bidirectional construction process mechanics for tunnels in dipping layered formation", Tunn. Undergr. Space Technol., 36, 57-65. https://doi.org/10.1016/j.tust.2013.01.009
  8. Lin, P., Liu, H.Y. and Zhou, W.Y. (2015), "Experimental study on failure behaviour of deep tunnels under high in-situ stresses", Tunn. Undergr. Space Technol., 46, 28-45. https://doi.org/10.1016/j.tust.2014.10.009
  9. Nazife, E. and David, J.W. (2012), "Experimental, numerical and analytical studies on tensile strength of rocks", Int. J. Rock Mech. Mining Sci., 48(1), 21-30.
  10. Sun, G.Z. (1988), Rock Mass Structure Mechanics, Science Press, Beijing, China.
  11. The Professional Standards Compilation Group of People's Republic of China (2005), TB 10003-2005, Code for design on tunnel of railway, Beijing, China.
  12. Tunsakul, J., Jongpradist, P., Kongkitkul, W., Wonglert, A. and Youwai, S. (2013), "Investigation of failure behavior of continuous rock mass around cavern under high internal pressure", Tunn. Undergr. Space Technol., 34, 110-123. https://doi.org/10.1016/j.tust.2012.11.004
  13. Wang, S.J., Yang, Z.F. and Liu, Z.H. (1984), Underground Engineering Rock Mass Stability Analysis, Science Press, Beijing, China.
  14. Xie, J.X. (1964), "Earth pressure on shallow burial tunnel", China Civil Eng. J., 10(6), 58-70.
  15. Yang, X.L. and Qin, C.B. (2014a), "Limit analysis of rectangular cavity subjected to seepage forces based on Hoek-Brown failure criterion" Geomech. Eng., 6(5), 503-515. https://doi.org/10.12989/gae.2014.6.5.503
  16. Yang, X.L. and Qin, C.B. (2014b), "Upper bound limit analysis of roof collapse in shallow tunnels with arbitrary cross sections under condition of seepage force", J. Cent. South. Univ., 21(11), 4338-4343. https://doi.org/10.1007/s11771-014-2433-2
  17. Yang, J.P., Chen, W.Z. and Yang, D.S. (2015), "Numerical determination of strength and deformability of fractured rock mass by FEM modeling", Comput. Geotech., 64, 20-31. https://doi.org/10.1016/j.compgeo.2014.10.011
  18. Youn, H. and Tonon, F. (2010), "Multi-stage triaxial test on brittle rock", Int. J. Rock Mech. Mining Sci., 47(4), 678-684. https://doi.org/10.1016/j.ijrmms.2009.12.017
  19. Yu, Q.L., Zhu, W.C. and Tang, C.A. (2014), "Impact of rock microstructures on failure processes-Numerical study based on DIP technique", Geomech. Eng., Int. J., 7(4), 375-401. https://doi.org/10.12989/gae.2014.7.4.375
  20. Yu, S., Zhu, W.S., Yang, W.M., Zhang, D.F. and Ma, Q.S. (2015), "Rock bridge fracture model and stability analysis of surrounding rock in underground cavern group", Struct. Eng. Mech., Int. J., 53(3), 481-495. https://doi.org/10.12989/sem.2015.53.3.481
  21. Zhao, Y.L., Cao, P., Wen, Y.D., Yang, H. and Li, J.T. (2008), "Damage fracture failure mechanism of compressive-shear rock cracks under seepage pressure", J. Cent. South. Univ., 39(4), 838-844.
  22. Zhang, C.P., Han, K.H. and Fang, Q. (2014), "Functional catastrophe analysis of collapse mechanisms for deep tunnels based on the Hoek-Brown failure criterion", J. Zhejiang Univ-Sc. A, 15(9), 723-731. https://doi.org/10.1631/jzus.A1400014
  23. Zhou, X. and Qian, Q. (2013), "Zonal disintegration mechanism of the microcrack-weakened surrounding rock mass in deep circular tunnels", J. Min. Sci., 49(2), 210-219. https://doi.org/10.1134/S1062739149020020
  24. Zhou, J.W., Xu, W.Y. and Shi, C. (2007), "Investigation on compression-shear fracture criterion of rock based on rock based on failure criteria", Chinese J. Rock Mech. Eng., 26(6), 1194-1200.

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