Micro-Mesoscopic Creep Damage Evolution and Failure Mechanism of Sandy Mudstone
Publication: International Journal of Geomechanics
Volume 21, Issue 3
Abstract
A typical sandy mudstone from the deep-buried roadway of the Kouzidong coal mine was taken as the research object. Based on the micro-mesoscopic experiments combining the acoustic emission (AE) and digital speckle correlation method (DSCM), as well as numerical simulations based on the discrete element method (DEM), both the micro-mesoscopic creep damage evolution and the failure mechanism of sandy mudstone were investigated. The experimental results show that the AE curve of sandy mudstone in the multilevel creep test is consistent with the axial strain curve. Three stages, including the decelerative, isokinetic, and accelerative creep stage, can be identified. The three-dimensional source location of AE events shows that the creep loading leads to more severe, homogeneous, and dispersed microdamage in sandy mudstone and a looser failure mode. It was also found by DSCM techniques that the microscopic deformation field evolution of sandy mudstone in the creep process well corresponds to the three stages of creep failure. A transition of microscopic deformation field from random, via symmetrical, to asymmetrical distribution, can be observed during the creep failure process of sandy mudstone. By introducing the time-dependent stress corrosion theory into the existing parallel-bonded model (PBM) in particle flow code (PFC), the microdamage evolution mechanism of sandy mudstone under creep loading was studied both theoretically and numerically, and the corresponding results revalidate our experimental findings.
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Acknowledgments
The financial supports from the National Natural Science Foundation of China, China (Nos. 51734009 and 51904290), the National Key Research and Development Program of China, China (No. 2017YFC0603001), and the Natural Science Foundation of Jiangsu Province, China (No. BK20180663), are gratefully acknowledged.
References
Chehab, G. R., Y. Seo, and Y. R. Kim. 2007. “Viscoelastoplastic damage characterization of asphalt–aggregate mixtures using digital image correlation.” Int. J. Geomech. 7 (2): 111–118. https://doi.org/10.1061/(ASCE)1532-3641(2007)7:2(111).
Chen, S. J., W. Q. Chen, Y. B. Ouyang, S. Matthai, and L. H. Zhang. 2019. “Transitions between nanomechanical and continuum mechanical contacts: New insights from liquid structure.” Nanoscale 11 (47): 22954–22963. https://doi.org/10.1039/C9NR07180F.
Du, M. R., S. J. Chen, W. H. Duan, W. Q. Chen, and H. W. Jing. 2018. “Role of multiwalled carbon nanotubes as shear reinforcing nanopins in quasi-brittle matrices.” ACS Appl. Nano Mater. 1 (4): 1731–1740. https://doi.org/10.1021/acsanm.8b00162.
Fan, Q. Y., K. Q. Yang, and W. M. Wang. 2010. “Study of creep mechanism of argillaceous soft rocks.” [In Chinese] Chin. J. Rock Mech. Eng. 29 (8): 1555–1561.
Feng, W. L., C. S. Qiao, and S. J. Niu. 2020. “Study on sandstone creep properties of Jushan Mine affected by degree of damage and confining pressure.” Bull. Eng. Geol. Environ. 79 (2): 869–888. https://doi.org/10.1007/s10064-019-01615-x.
Fu, Z. Z., S. S. Chen, Q. M. Zhong, and Y. J. Zhang. 2019. “Modeling interaction between loading-induced and creep strains of rockfill materials using a hardening elastoplastic constitutive model.” Can. Geotech. J. 56 (10): 1380–1394. https://doi.org/10.1139/cgj-2018-0435.
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.
Herrmann, J., E. Rybacki, H. Sone, and G. Dresen. 2020. “Deformation experiments on Bowland and Posidonia shale—Part II: Creep behavior at in situ pc-T conditions.” Rock Mech. Rock Eng. 53 (2): 755–779. https://doi.org/10.1007/s00603-019-01941-2.
Hou, R. B., K. Zhang, J. Tao, X. R. Xue, and Y. L. Chen. 2019. “A non-linear creep damage coupled model for rock considering the effect of initial damage.” Rock Mech. Rock Eng. 52 (5): 1275–1285. https://doi.org/10.1007/s00603-018-1626-7.
Jin, C. Y., A. L. Shao, D. Liu, T. Han, F. Q. Fan, and S. G. Li. 2018. “Failure mechanism of highly stressed rock mass during unloading based on the stress arch theory.” Int. J. Geomech. 18 (11): 04018146. https://doi.org/10.1061/(ASCE)Gm.1943-5622.0001280.
Labuz, J. F., H. S. Chang, C. H. Dowding, and S. P. Shah. 1988. “Parametric study of acoustic emission location using only four sensors.” Rock Mech. Rock Eng. 21 (2): 139–148. https://doi.org/10.1007/BF01043118.
Li, H. B., M. C. Liu, W. B. Xing, S. Shao, and J. W. Zhou. 2017. “Failure mechanisms and evolution assessment of the excavation damaged zones in a large-scale and deeply buried underground powerhouse.” Rock Mech. Rock Eng. 50 (7): 1883–1900. https://doi.org/10.1007/s00603-017-1208-0.
Li, X. Z., C. Z. Qi, and Z. S. Shao. 2018. “A microcrack growth-based constitutive model for evaluating transient shear properties during brittle creep of rocks.” Eng. Fract. Mech. 194: 9–23. https://doi.org/10.1016/j.engfracmech.2018.02.034.
Li, X. Z., C. Z. Qi, and P. C. Zhang. 2020. “A micro–macro confined compressive fatigue creep failure model in brittle solids.” Int. J. Fatigue 130: 105278. https://doi.org/10.1016/j.ijfatigue.2019.105278.
Liu, Y., A. Deng, and M. Jaksa. 2020. “Three-dimensional discrete-element modeling of geocell-reinforced ballast considering breakage.” Int. J. Geomech. 20 (4): 04020032. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001552.
Ma, L. J., M. Y. Wang, N. Zhang, P. X. Fan, and J. Li. 2017. “A variable-parameter creep damage model incorporating the effects of loading frequency for rock salt and its application in a bedded storage cavern.” Rock Mech. Rock Eng. 50 (9): 2495–2509. https://doi.org/10.1007/s00603-017-1236-9.
Pan, P.-Z., S. Miao, Z. Wu, X.-T. Feng, and C. Shao. 2020. “Laboratory observation of spalling process induced by tangential stress concentration in hard rock tunnel.” Int. J. Geomech. 20 (3): 04020011. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001620.
Potyondy, D. O. 2007. “Simulating stress corrosion with a bonded-particle model for rock.” Int. J. Rock Mech. Min. Sci. 44 (5): 677–691. https://doi.org/10.1016/j.ijrmms.2006.10.002.
Potyondy, D. O., and P. A. Cundall. 2004. “A bonded-particle model for rock.” Int. J. Rock Mech. Min. Sci. 41 (8): 1329–1364. https://doi.org/10.1016/j.ijrmms.2004.09.011.
Qi, C. C., and A. Fourie. 2019. “Numerical investigation of the stress distribution in backfilled stopes considering creep behaviour of rock mass.” Rock Mech. Rock Eng. 52 (9): 3353–3371. https://doi.org/10.1007/s00603-019-01781-0.
Shimizu, H., T. Koyama, T. Ishida, M. Chijimatsu, T. Fujita, and S. Nakama. 2010. “Distinct element analysis for class ii behavior of rocks under uniaxial compression.” Int. J. Rock Mech. Min. Sci. 47 (2): 323–333. https://doi.org/10.1016/j.ijrmms.2009.09.012.
Song, Y., H. P. Wang, Y. T. Chang, and Y. Q. Li. 2019. “Non-linear creep model and parameter identification of mudstone based on a modified fractional viscous body.” Environ. Earth Sci. 78 (20): 607. https://doi.org/10.1007/s12665-019-8619-z.
Song, Y. M., T. B. Zhao, and Y. D. Jiang. 2013. “Experimental study on the evolution of creep deformation field of rock based on DSCM.” [In Chinese] J. China Univ. Min. Technol. 42 (3): 466–470. https://doi.org/10.13247/j.cnki.jcumt.2013.03.021.
Xu, W. Y., S. Q. Yang, S. L. Yang, S. Y. Xie, J. F. Shao, and Y. F. Wang. 2005. “Investigation on triaxial rheological mechanical properties of greenschist specimen (I): Experimental results.” [In Chinese] Rock Soil Mech. 26 (4): 531–537. https://doi.org/10.16285/j.rsm.2005.04.005.
Yang, D., W. Chen, J. Yang, and S. Li. 2011. “Experimental study of micro–macro damage properties of rock salt during creep test by means of digital image correlation technique.” [In Chinese] Chin. J. Rock Mech. Eng. 30 (7): 1363–1367.
Yang, S. Q., M. Chen, H. W. Jing, K. F. Chen, and B. Meng. 2017. “A case study on large deformation failure mechanism of deep soft rock roadway in Xi'an coal mine, China.” Eng. Geol. 217: 89–101. https://doi.org/10.1016/j.enggeo.2016.12.012.
Yang, S. Q., B. Hu, P. G. Ranjith, and P. Xu. 2018. “Multi-step loading creep behavior of red sandstone after thermal treatments and a creep damage model.” Energies 11 (1): 212. https://doi.org/10.3390/en11010212.
Yang, W. D., Q. Y. Zhang, S. C. Li, and S. G. Wang. 2014. “Time-dependent behavior of diabase and a non-linear creep model.” Rock Mech. Rock Eng. 47 (4): 1211–1224. https://doi.org/10.1007/s00603-013-0478-4.
Yu, X. Y., T. Xu, M. Heap, G. L. Zhou, and P. Baud. 2018. “Numerical approach to creep of rock based on the numerical manifold method.” Int. J. Geomech. 18 (11): 04018153. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001286.
Zhang, P., Z. Meng, K. Zhang, and S. Jiang. 2020. “Impact of coal ranks and confining pressures on coal strength, permeability, and acoustic emission.” Int. J. Geomech. 20 (8): 04020135. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001752.
Zhang, Y., Y. R. Liu, Z. F. Tao, H. W. Zhou, and Q. Yang. 2019a. “Fractal characteristics and failure analysis of geomechanical model for arch dam based on acoustic emission technique.” Int. J. Geomech. 19 (11): 04019119. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001502.
Zhang, Y. Y., Z. S. Shao, W. Wei, and R. J. Qiao. 2019b. “PFC simulation of crack evolution and energy conversion during basalt failure process.” J. Geophys. Eng. 16 (3): 639–651. https://doi.org/10.1093/jge/gxz036.
Zhao, H., J. Zhang, P. Qiu, and S. Ji. 2019. “Hierarchical modeling method for dem simulation and its application in soil–pile–cap interaction and impact case.” Int. J. Geomech. 19 (7): 04019076. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001467.
Zhao, Y. L., Y. X. Wang, W. J. Wang, W. Wan, and J. Z. Tang. 2017. “Modeling of non-linear rheological behavior of hard rock using triaxial rheological experiment.” Int. J. Rock Mech. Min. Sci. 93: 66–75. https://doi.org/10.1016/j.ijrmms.2017.01.004.
Zhou, H. W., C. P. Wang, B. B. Han, and Z. Q. Duan. 2011. “A creep constitutive model for salt rock based on fractional derivatives.” Int. J. Rock Mech. Min. Sci. 48 (1): 116–121. https://doi.org/10.1016/j.ijrmms.2010.11.004.
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Published In
International Journal of Geomechanics
Volume 21 • Issue 3 • March 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Apr 5, 2020
Accepted: Oct 10, 2020
Published online: Jan 11, 2021
Published in print: Mar 1, 2021
Discussion open until: Jun 11, 2021
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