Anisotropic Strength, Deformability, and Failure Behavior of Artificial Columnar Jointed Rock Masses under Triaxial Compression
Publication: Journal of Materials in Civil Engineering
Volume 35, Issue 3
Abstract
Columnar jointed rock masses (CJRMs) have a complex network structure and, therefore, present a great challenge to geotechnical engineering design. A series of triaxial compression tests is performed on artificial CJRM specimens subjected to a confining pressure of 5 MPa, considering various pore pressures (, 2 MPa, and 4 MPa). In this work, the influence of the joint dip angles and pore pressure on the anisotropic strength, deformation, and failure modes of the CJRM is investigated. The anisotropic characteristic stresses, strength parameters ( and ) and elastic modulus of the CJRM specimens show a U-shaped pattern with increasing joint dip angles (), while Poisson’s ratio changes inversely. The elastic modulus has a stronger anisotropy than Poisson’s ratio. Moreover, with increasing pore pressure, the characteristic stresses decrease, while the anisotropy of stresses and deformations increases. Finally, three failure modes of CJRM specimens with different joint dip angles are observed under triaxial compression conditions.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This research is supported by the National Key R&D Program of China (No. 2018YFC0407004), the Natural Science Foundation of China (Grant Nos. 51939004, 11772118, and 11772116), and the 111 Project are gratefully acknowledged.
References
Aydin, A. 2009. “ISRM suggested method for determination of the Schmidt hammer rebound hardness: Revised version.” Int. J. Rock Mech. Min. Sci. 46 (3): 627–634. https://doi.org/10.1016/j.ijrmms.2008.01.020.
Dai, F., B. Li, N. W. Xu, G. T. Meng, J. Y. Wu, and Y. L. Fan. 2017. “Microseismic monitoring of the left bank slope at the Baihetan hydropower station, China.” Rock Mech. Rock Eng. 50 (Sep): 225–232. https://doi.org/10.1007/s00603-016-1050-9.
Gatelier, N., F. Pellet, and B. Loret. 2002. “Mechanical damage of an anisotropic porous rock in cyclic triaxial tests.” Int. J. Rock Mech. Min. Sci. 39 (3): 335–354. https://doi.org/10.1016/S1365-1609(02)00029-1.
Goehring, L., and S. W. Morris. 2005. “Order and disorder in columnar joints.” Europhys. Lett. 69 (5): 739–745. https://doi.org/10.1209/epl/i2004-10408-x.
Goehring, L., S. W. Morris, and Z. Q. Lin. 2006. “Experimental investigation of the scaling of columnar joints.” Phys. Rev. E: Stat. Nonlinear Soft Matter Phys. 74 (3): 036115. https://doi.org/10.1103/PhysRevE.74.036115.
Ji, H., J. C. Zhang, W. Y. Xu, R. B. Wang, H. L. Wang, L. Yan, and Z. N. Lin. 2017. “Experimental investigation of the anisotropic mechanical properties of a columnar jointed rock mass: Observations from laboratory-based physical modeling.” Rock Mech. Rock Eng. 50 (7): 1919–1931. https://doi.org/10.1007/s00603-017-1192-4.
Jia, C. J., W. Y. Xu, R. B. Wang, S. S. Wang, and Z. N. Lin. 2018. “Experimental investigation on shear creep properties of undisturbed rock discontinuity in Baihetan Hydropower Station.” Int. J. Rock Mech. Min. Sci. 104 (Feb): 27–33. https://doi.org/10.1016/j.ijrmms.2018.02.011.
Kantha, L. H. 1981. “‘Basalt fingers’—Origin of columnar joints?” Geol. Mag. 118 (3): 251–264. https://doi.org/10.1017/S0016756800035731.
Muller, G. 1998. “Experimental simulation of basalt columns.” J. Volcanol. Geotherm. Res. 86 (98): 93–96. https://doi.org/10.1016/S0377-0273(98)00045-6.
Shi, A. C., Y. F. Wei, Y. H. Zhang, and M. F. Tang. 2020. “Study on the strength characteristics of columnar jointed basalt with a true triaxial apparatus at the Baihetan hydropower station.” Rock Mech. Rock Eng. 53 (11): 4947–4965. https://doi.org/10.1007/s00603-020-02195-z.
Singh, M., and K. S. Rao. 2005. “Empirical methods to estimate the strength of jointed rock masses.” Eng. Geol. 77 (1–2): 127–137. https://doi.org/10.1016/j.enggeo.2004.09.001.
Wasantha, P. L. P., W. J. Darlington, and P. G. Ranjith. 2012. “Characterization of mechanical behaviour of saturated sandstone using a newly developed triaxial apparatus.” Exp. Mech. 53 (5): 871–882. https://doi.org/10.1007/s11340-012-9690-5.
Xia, Y., C. Zhang, H. Zhou, J. Hou, G. Su, Y. Gao, N. Liu, and H. K. Singh. 2020. “Mechanical behavior of structurally reconstructed irregular columnar jointed rock mass using 3D printing.” Eng. Geol. 2020 (1): 268. https://doi.org/10.1016/j.enggeo.2020.105509.
Xiang, Z. P., H. L. Wang, W. Y. Xu, L. Q. Li, and M. Cai. 2019. “Mechanical behavior of rock-like specimens with hidden smooth joints under triaxial compression.” J. Mater. Civ. Eng. 31 (7): 04019130. https://doi.org/10.1061/(ASCE)MT.1943-5533.0002787.
Zhang, J. C., Z. N. Lin, B. Dong, and R. X. Guo. 2021a. “Triaxial compression testing at constant and reducing confining pressure for the mechanical characterization of a specific type of sandstone.” Rock Mech. Rock Eng. 54 (4): 1999–2012. https://doi.org/10.1007/s00603-020-02357-z.
Zhang, T., W. Y. Xu, W. Huang, and G. Y. Wu. 2020. “Experimental study on mechanical properties of multi-layered rock mass and statistical damage constitutive model under hydraulic-mechanical coupling.” Eur. J. Environ. Civ. Eng. 2020 (Jan): 1–11. https://doi.org/10.1080/19648189.2020.1763841.
Zhang, T., W. Y. Xu, H. L. Wang, R. B. Wang, L. Yan, and M. T. Hu. 2021b. “Anisotropic mechanical behaviour of columnar jointed rock masses subjected to cyclic loading: An experimental investigation.” Int. J. Rock Mech. Min. Sci. 2021 (Jan): 148. https://doi.org/10.1016/j.ijrmms.2021.104954.
Zhang, T., W. Y. Xu, R. B. Wang, L. Yan, and M. J. He. 2021c. “Deformation characteristics of cement mortar under triaxial cyclic loading: An experimental investigation.” Int. J. Fatigue 150 (Sep): 106305. https://doi.org/10.1016/j.ijfatigue.2021.106305.
Zhang, T., W. Y. Xu, and J. R. Xu. 2022. “Experimental and numerical investigations on the mechanical behavior of basalt in the dam foundation of the Baihetan Hydropower Station.” Int. J. Geomech. 22 (2): 04021272. https://doi.org/10.1061/(asce)gm.1943-5622.0002267.
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Published In
Journal of Materials in Civil Engineering
Volume 35 • Issue 3 • March 2023
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Feb 16, 2022
Accepted: Jun 15, 2022
Published online: Dec 20, 2022
Published in print: Mar 1, 2023
Discussion open until: May 20, 2023
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