Geomechanics and Engineering

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Analysis of the buckling failure of bedding slope based on monitoring data - a model test study

  • Zhang, Qian (Key Laboratory of Structural Health Monitoring and Control, Shijiazhuang Tiedao University) ;
  • Hu, Jie (School of Mechanical Engineering, Nanjing University of Science and Technology) ;
  • Gao, Yang (Key Laboratory of Structural Health Monitoring and Control, Shijiazhuang Tiedao University) ;
  • Du, Yanliang (Key Laboratory of Structural Health Monitoring and Control, Shijiazhuang Tiedao University) ;
  • Li, Liping (Geotechnical and Structural Engineering Research Center, Shandong University) ;
  • Liu, Hongliang (Geotechnical and Structural Engineering Research Center, Shandong University) ;
  • Sun, Shangqu (Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology)
  • Received : 2020.02.19
  • Accepted : 2022.01.18
  • Published : 2022.02.25
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Abstract

Buckling failure is a typical slope instability mode that should be paid more attention to. It is difficult to provide systematic guidance for the monitoring and management of such slopes due to unclear mechanism. Here we examine buckling failure as the potential instability mode for a slope above a railway tunnel in southwest China. A comprehensive model test system was developed that can be used to conduct buckling failure experiments. The displacement, stress, and strain of the slope were monitored to document the evolution of buckling failure during the experiment. Monitoring data reveal the deformation and stress characteristics of the slope with different slipping mass thicknesses and under different top loads. The test results show that the slipping mass is the main subject of the top load and is the key object of monitoring. Displacement and stress precede buckling failure, so maybe useful predictors of impending failure. However, the response of the stress variation is earlier than displacement variation during the failure process. It is also necessary to monitor the bedrock near the slip face because its stress evolution plays an important role in the early prediction of instability. The position near the slope foot is most prone to buckling failure, so it should be closely monitored.

Keywords

Acknowledgement

The research was financially funded by the national key R&D program of China (2021YFB2301803, 2018YFB1600200), Science and Technology Project of Hebei Education Department (BJ2019050), Joint funds of NSFC (U2034207), Innovative Resarch Groups of Hebei province (E2021210099). Great appreciation goes to the editorial board and the reviewers of this paper.

References

  1. Adhikary, D.P., Muhlhaus, H.B. and Dyskin, A.V. (2001), "A numerical study of flexural buckling of foliated rock slopes", Int. J. Numer. Anal. Met., 25, 871-884. https://doi.org/10.1002/nag.157.
  2. Babanouri, N. and Sarfarazi, V. (2018), "Numerical analysis of a complex slope instability: Pseudo-wedge failure", Geomech. Eng., 15(1), 669-676. https://doi.org/10.12989/gae.2018.15.1.669.
  3. Cavers, D.S. (1981), "Simple methods to analyze buckling of rock slopes", Rock Mech. Rock Eng., 14, 87-104. https://doi.org/10.1007/BF01239857.
  4. Hu, J., Li, S., Li, L., Shi, S.S., Zhou, Z.Q., Liu, H.L. and He, P. (2018), "Field, experimental, and numerical investigation of a rockfall above a tunnel portal in southwestern China", B. Eng. Geol. Environ., 77, 1365-1382. https://doi.org/10.1007/s10064-017-1152-y.
  5. Hu, J., Li, S., Liu, H., Li, L., Shi, S. and Qin, C. (2020), "New modified model for estimating the peak shear strength of rock mass containing nonconsecutive joint based on a simulated experiment", Int. J. Geomech., 20(7), 04020091. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001732.
  6. Jiang, T., Shen, Z.Z., Yang, M., Xu, L.Q., Gan, L. and Cui, X.B. (2018), "A new model approach to predict the unloading rock slope displacement behavior based on monitoring data", Struct. Eng. Mech., 67(2), 105-113. https://doi.org/10.12989/sem.2018.67.2.105.
  7. Kim, J.M., Lee, S., Park, J.Y., Kihm, J.H. and Park, S. (2020), "A set of failure variables for analyzing stability of slopes and tunnels", Geomech. Eng., 20(3), 175-189. https://doi.org/10.12989/gae.2020.20.3.175.
  8. Li, L., Hu, J., Li, S., Qin. C, Liu, H., Chen D. and Wang. J. (2021), "Development of a novel triaxial rock testing method based on biaxial test apparatus and its application", Rock Mech. Rock Eng. https://doi.org/10.1007/s00603-020-02329-3.
  9. Lin, P., Liu, X., Zhou, W., Wang, R.K. and Wang, S.Y. (2015), "Cracking, stability and slope reinforcement analysis relating to the Jinping dam based on a geomechanical model test", Arab. J. Geosci., 8(7), 4393-4410. https://doi.org/10.1007/s12517-014-1529-1.
  10. Moradi, G., Abdolmaleki, A. and Soltani, P. (2019), "Small-and large-scale analysis of bearing capacity and load-settlement behavior of rock-soil slopes reinforced with geogrid-box method", Geomech. Eng., 18(3), 315-328. https://doi.org/10.12989/gae.2019.18.3.315.
  11. Nakajima, S., Abe, K., Shinoda, M., Nakamura, S., Nakamura, H. and Chigira, K. (2019), "Dynamic centrifuge model tests and material point method analysis of the impact force of a sliding soil mass caused by earthquake-induced slope failure", Soils Found. https://doi.org/10.1016/j.sandf.2019.08.004.
  12. Ning, J.G., Liu, X.S., Tan, Y.L., Wang, J. and Tian, C.L. (2015), "Relationship of box counting of fractured rock mass with Hoek-Brown parameters using particle flow simulation", Geomech. Eng., 9(5), 619-629. https://doi.org/10.12989/gae.2015.9.5.619.
  13. Pant, S.R. and Adhikary, D.P. (1999), "Implicit and explicit modelling of flexural buckling of foliated rock slopes", Rock Mech. Rock Eng., 32(2), 157-164. https://doi.org/10.1007/s006030050029.
  14. Park, D.S. (2018), "Analyses of centrifuge modelling for artificially sensitive clay slopes", Geomech. Eng., 16(5), 513-525. https://doi.org/10.12989/gae.2018.16.5.513.
  15. Pereira, L.C. and Lana, M.S. (2013), "Stress-strain analysis of buckling failure in phyllite slopes", Geotech. Geol. Eng., 31, 297-314. https://doi.org/10.1007/s10706-012-9556-8.
  16. Qi, S., Lan, H. and Dong, J. (2015), "An analytical solution to slip buckling slope failure triggered by earthquake", Eng. Geol., 194, 4-11. https://doi.org/10.1016/j.enggeo.2014.06.004.
  17. Salvoni, M. and Dight, P.M. (2016), "Rock damage assessment in a large unstable slope from microseismic monitoring-MMG Century mine (Queensland, Australia) case study", Eng. Geol., 210, 45-56. https://doi.org/10.1016/j.enggeo.2016.06.002.
  18. Silva, C.H.C. and Lana, M.S. (2014), "Numerical modeling of buckling failure in a mine slope", Rem. Revista. Escola. De Minas., 67(1), 81-86. https://doi.org/10.1590/S0370-44672014000100012.
  19. Toniuc, H. and Pierron, F. (2019), "Infrared deflectometry for slope deformation measurements", Exp. Mech., 59(8), 1187-1202. https://doi.org/10.1007/s11340-019-00480-9.
  20. Wang, S.H., Huang, R.Q. and Ni, P.P. (2017), "Advanced discretization of rock slope using block theory within the framework of discontinuous deformation analysis", Geomech. Eng., 12(4), 723-738. https://doi.org/10.12989/gae.2017.12.4.723.
  21. Wang, X.T., Li, S.C., Xu, Z.H., Li, X.Z., Lin, P. and Lin, C.J. (2019) "An interval risk assessment method and management of water inflow and inrush in course of karst tunnel excavation", Tunn. Undergr. Sp. Tech., 92, 103033. https://doi.org/10.1016/j.tust.2019.103033.
  22. Yamaguchi, K., Takeuchi, N. and Hamasaki, E. (2018), "Three-dimensional simplified slope stability analysis by hybrid-type penalty method", Geomech. Eng., 15(4), 947-955. https://doi.org/10.12989/gae.2018.15.4.947.
  23. Zhang, B., Wang, H.X., Huang, J. and Xu, N.X. (2019), "Model test on slope deformation and failure caused by transition from open-pit to underground mining", Geomech. Eng., 19(2), 167-178. https://doi.org/10.12989/gae.2019.19.2.167.
  24. Zhu, H.H., Yin, J.H., Dong, J.H. and Zhang, L. (2010), "Physical modelling of sliding failure of concrete gravity dam under overloading condition", Geomech. Eng., 2(2), 89-106. https://doi.org/10.12989/gae.2010.2.2.089.