Influence of Rock Strength on the Mechanical Characteristics and Energy Evolution Law of Gypsum–Rock Combination Specimen under Cyclic Loading–Unloading Condition
Publication: International Journal of Geomechanics
Volume 22, Issue 5
Abstract
The stability of coal–rock composite structures is essential for the safety of coal mine production. To explore the failure characteristics and energy evolution law of coal–rock composite structures, uniaxial cyclic loading–unloading tests of gypsum–rock combination specimens are conducted. Test results show that the peak stress and elastic modulus of combination specimens increase linearly with increasing the rock strength, as well as the failure intensity. When the rock strength increases, the energy accumulation rate of a combination specimen decreases, but the total accumulated energy increases before the prepeak stress. The energy evolution processes of rock component and gypsum component are similar to the combination specimen. During the loading process, the energy stored in the rock is low due to the small deformation, but the energy stored in the gypsum is high due to the large deformation, which is almost equal to the combination specimen. Finally, the energy-driven failure mechanism of the coal–rock composite structure is revealed as, in the failure process of the composite structure, the coal will fail first and release elastic strain energy, accompanied with the release of the elastic strain energy of the rock. The energy released by the rock will compensate the coal, which can intensify the coal failure.
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Acknowledgments
The research described in this paper was financially supported by the Major Scientific and Technological Innovation Project of Shandong Provincial Key Research Development Program (No. 2019SDZY02), National Natural Science Foundation of China (No. 51904165), Shandong Provincial Natural Science Foundation (No. ZR2019QEE026), and State Key Laboratory of Water Resource Protection and Utilization in Coal Mining (No. SHGF-16-25).
Disclaimer
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
References
Chen, L., and R. Bulut. 2017. “Numerical analysis of the effects of cracks on the moisture-diffusion coefficient of unsaturated soils.” Int. J. Geomech. 17 (8): 04017017. https://doi.org/10.1061/(ASCE)GM.1943-5622.0000868.
Chen, S. J., D. W. Yin, B. L. Zhang, H. F. Ma, and X. Q. Liu. 2017a. “Mechanical characteristics and progressive failure mechanism of roof-coal pillar structure.” Chin. J. Rock Mech. Eng. 36 (7): 1588–1598.
Chen, Y., J. P. Zuo, X. Wei, H. Q. Song, and Y. J. Sun. 2017b. “Energy nonlinear evolution characteristics of the failure behavior of coal–rock combined body.” Chin. J. Underground Space Eng. 13 (1): 124–132.
Dou, L. M., W. Cai, A. Y. Cao, and W. H. Guo. 2018. “Comprehensive early warning of rock burst utilizing microseismic multi-parameter indices.” Int. J. Min. Sci. Technol. 28 (5): 767–774. https://doi.org/10.1016/j.ijmst.2018.08.007.
Gao, F., and H. Kang. 2017. “Grain-based discrete-element modeling study on the effects of cementation on the mechanical behavior of low-porosity brittle rocks.” Int. J. Geomech. 17 (9): 04017061. https://doi.org/10.1061/(ASCE)GM.1943-5622.0000957.
Guo, W. Y., T. B. Zhao, Y. L. Tan, F. H. Yu, S. C. Hu, and F. Q. Yang. 2017. “Progressive mitigation method of rock bursts under complicated geological conditions.” Int. J. Rock Mech. Min. Sci. 96: 11–22. https://doi.org/10.1016/j.ijrmms.2017.04.011.
Guo, W. Y., F. H. Yu, Y. L. Tan, and T. B. Zhao. 2019. “Experimental study on the failure mechanism of layer-crack structure.” Energy Sci. Eng. 7 (6): 2351–2372. https://doi.org/10.1002/ese3.407.
Liu, B., S. R. Yang, D. M. Guo, and D. Z. Zhang. 2004. “Burst-prone experiments of coal–rock combination at −1100 m level in suncun coal mine.” J. China Coal Soc. 23 (14): 2402–2408.
Lu, C. P., L. M. Dou, N. Zhang, J. H. Xie, X. N. Wang, H. Liu, and J. W. Zhang. 2013. “Microseismic frequency-spectrum evolutionary rule of rockburst triggered by roof fall.” Int. J. Rock Mech. Min. Sci. 64: 6–16. https://doi.org/10.1016/j.ijrmms.2013.08.022.
Lu, C. P., G. J. Liu, Y. Liu, N. Zhang, J. H. Xue, and L. Zhang. 2015. “Microseismic multi-parameter characteristics of rockburst hazard induced by hard roof fall and high stress concentration.” Int. J. Rock Mech. Min. Sci. 76: 18–32. https://doi.org/10.1016/j.ijrmms.2015.02.005.
Li, L., and Y. Zhang. 2017. “Experimental research on bump proneness of simulated layered rock specimens.” Chin. J. Rock Mech. Eng. 36 (S2): 4025–4035. https://doi.org/10.13722/j.cnki.jrme.2015.1668.
Li, C. J., Y. Xv, Y. T. Zhang, and H. L. Li. 2019. “Study on energy evolution and fractal characteristics of cracked coal–rock-like combined body under impact loading.” Chin. J. Rock Mech. Eng. 38 (11): 2231–2241.
Li, C. J., Y. Xu, M. M. Feng, and B. Pan. 2020. “Deformation law and failure mechanism of coal–rock like combined body under uniaxial loading.” J. China Coal Soc. 45 (5): 1773–1782.
Song, D. Z., E. Y. Wang, N. Li, M. Y. Jin, and S. P. Xue. 2012. “Rock burst prevention based on dissipative structure theory.” Int. J. Min. Sci. Technol. 22 (2): 159–163. https://doi.org/10.1016/j.ijmst.2011.08.004.
Tan, Y. L., and Y. J. Yang. 1996. “The mechanism and engineering significance of rebound.” Mech. Pract. 2: 21–23.
Tan, Y. L., X. S. Liu, B. T. Shen, J. G. Ning, and Q. H. Gu. 2018. “New approaches to testing and evaluating the impact capability of coal seam with hard roof and/or floor in coal mines.” Geomech. Eng. 14 (4): 367–376.
Tian, J. J., D. J. Xu, and T. H. Liu. 2020. “An experimental investigation of the fracturing behaviour of rock-like materials containing two V-shaped parallelogram flaws.” Int. J. Min. Sci. Technol. 30 (6): 777–783. https://doi.org/10.1016/j.ijmst.2020.07.002.
Wang, J. A., and H. D. Park. 2001. “Comprehensive prediction of rockburst based on analysis of strain energy in rocks.” Tunnelling Underground Space Technol. 16 (1): 49–57. https://doi.org/10.1016/S0886-7798(01)00030-X.
Wu, Y. Z., J. Y. Chen, J. K. Jiao, Y. F. Zheng, and J. He. 2018. “Damage and failure mechanism of anchored surrounding rock with impact loading.” J. China Coal Soc. 43 (9): 2389–2397.
Wang, S., W. Xu, W. Wang, and C. Jia. 2018. “Experimental and numerical investigations on the mechanical behavior of fine-grained sandstone.” Int. J. Geomech. 18 (2): 04017150. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001062.
Wu, G. S., W. J. Yu, J. P. Zuo, and S. H. Du. 2020. “Experimental and theoretical investigation on mechanisms performance of the rock-coal-bolt (RCB) composite system.” Int. J. Min. Sci. Technol. 30 (6): 759–768. https://doi.org/10.1016/j.ijmst.2020.08.002.
Xie, H. P., R. D. Peng, Y. Ju, and H. W. Zhou. 2005. “On energy analysis of rock failure.” Chin. J. Rock Mech. Eng. 24 (15): 2603–2608.
Yang, Y. J., Y. Song, and J. Chu. 2007. “Experimental study of characteristics of strength and deformation of coal under cyclic loading.” Chin. J. Rock Mech. Eng. 26 (1): 201–205.
Yang, L., F. Q. Gao, X. Q. Wang, and J. Z. Li. 2019. “Energy evolution law and failure mechanism of coal–rock combined specimen.” J. China Coal Soc. 44 (12): 3894–3902.
Yang, Y., J. W. Ding, Q. Xu, B. T. Zhu, C. J. Xu, and L. H. Tong. 2020. “Damage of sandstone induced by repetitive impact loading.” Int. J. Geomech. 20 (7): 04020090. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001736.
Zhou, J. W., X. G. Yang, W. X. Fu, J. Xu, and H. T. Li. 2010. “Experimental test and fracture damage mechanical characteristics of brittle rock under uniaxial cyclic loading and unloading conditions.” Chin. J. Rock Mech. Eng. 29 (6): 1172–1183.
Zuo, J. P., H. P. Xie, A. M. Wu, and J. F. Liu. 2011a. “Investigation on failure mechanisms and mechanical behaviors of deep coal–rock single body and combined body.” J. China Coal Soc. 30 (1): 84–92.
Zuo, J. P., H. P. Xie, B. B. Meng, and J. F. Liu. 2011b. “Experimental research on loading-unloading behavior of coal–rock combination bodies at different stress levels.” Rock Soil Mech. 32 (5): 1287–1296.
Zhang, Z. T., J. F. Liu, L. Wang, H. T. Yang, and J. P. Zuo. 2012. “Effects of combination mode on mechanical properties and failure characteristics of the coalrock combinations.” J. China Coal Soc. 37 (10): 1677–1681.
Zhang, J. F., F. X. Jiang, J. B. Yang, W. S. Bai, and L. Zhang. 2017a. “Rockburst mechanism in soft coal seam within deep coal mines.” Int. J. Min. Sci. Technol. 27 (3): 551–556. https://doi.org/10.1016/j.ijmst.2017.03.011.
Zhang, Z. H., G. F. Gong, Q. F. Gao, and F. Sun. 2017b. “Fragmentation energy-saving theory of full face rock tunnel boring machine disc cutters.” Chin. J. Rock Mech. Eng. 30 (4): 913–919. https://doi.org/10.1007/s10033-017-0159-4.
Zhang, D. X., W. Y. Guo, C. W. Zang, X. F. Gong, Z. H. Li, Y. Qiu, and W. G. Chen. 2020. “A new burst evaluation index of coal–rock combination specimen considering rebound and damage effects of rock.” Geomatics Nat. Hazards Risk 11 (1): 984–999. https://doi.org/10.1080/19475705.2020.1760945.
Zhao, T. B., M. L. Xing, W. Y. Guo, C. W. Wang, and B. Wang. 2021. “Anchoring effect and energy-absorbing support mechanism of large deformation bolt.” J. Cent. South Univ. 28 (2): 572–581. https://doi.org/10.1007/s11771-021-4622-0.
Zhang, W., X. T. Feng, X. Bi, Z. B. Yao, Y. X. Xiao, L. Hu, W. J. Niu, and G. L. Feng. 2021. “An arrival time picker for microseismic rock fracturing waveforms and its quality control for automatic localization in tunnels.” Comput. Geotech. 135: 104175. https://doi.org/10.1016/j.compgeo.2021.104175.
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International Journal of Geomechanics
Volume 22 • Issue 5 • May 2022
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© 2022 American Society of Civil Engineers.
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Received: May 4, 2021
Accepted: Oct 13, 2021
Published online: Feb 24, 2022
Published in print: May 1, 2022
Discussion open until: Jul 24, 2022
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