Effect of a Gas Environment on the Crack Propagation of Coal Impact Failure
Publication: Journal of Energy Engineering
Volume 148, Issue 6
Abstract
Mining disasters such as coal and gas outbursts and rock bursts seriously threaten safe coal mining. Accordingly, it is important to analyze the dynamic damage characteristics of gas-bearing coal and achieve safe coal mining. In the present study, the criterion of crack arrest for gas-bearing coal was set in accordance with the theory of gas dynamics and fracture mechanics. Then, the impact failure characteristics of gas-bearing coal subjected to an impact load were investigated. In this regard, different parameters, including the impact energy, gas pressure, and gas type, were considered. Moreover, the transient effect of the free gas on the coal destruction was analyzed. The influence of free gas-induced damage on the coal structure was also simulated using ANSYS 17.0 software. The obtained results show that, during the impact crushing of gas-bearing coal, the gas moves in the coal body, which tears the coal body and increases the crushing effect of coal. The crushing effect of gas-bearing coal has a linear correlation with gas pressure, impact energy, and gas adsorption strength. It was concluded that the proposed crack arrest criterion and numerical methods are powerful measures for analyzing the failure characteristics of gas-bearing coal.
Get full access to this article
View all available purchase options and get full access to this article.
Data Availability Statement
All data, models, and code generated or used during this study are presented in the published article.
Acknowledgments
The authors express their gratitude for financial support from the National Key Research and Development Project (Grant No. 2018YFC0808500-02) and the National Natural Science Foundation of China (Grant No. 51804287). This work was financially supported by the Research and Demonstration of Cloud Warning Technology for Gas Disasters Driven by Multidimensional Data (Qiankehe Support [2021] General 514).
References
Alves, M., D. Zaragoza, G. B. Michela, and M. A. G. Calle. 2012. “Limiting the influence of friction on the split Hopkinson pressure bar tests by using a ring specimen.” Int. J. Impact Eng. 49 (Nov): 130–141. https://doi.org/10.1016/j.ijimpeng.2012.04.005.
Cai, M., P. K. Kaiser, H. Morioka, M. Minami, T. Maejima, Y. Tasaka, and H. Kurose. 2007. “FLAC/PFC coupled numerical simulation of AE in large-scale underground excavations.” Int. J. Rock Mech. Min. Sci. 44 (4): 550–564. https://doi.org/10.1016/j.ijrmms.2006.09.013.
Clarkson, C. R., and R. M. Buskin. 2000. “Binary gas adsorption/desorption isotherms: Effect of moisture and coal composition upon carbon dioxide selectivity over methane.” Int. J. Coal Geol. 42 (4): 241–271. https://doi.org/10.1016/S0166-5162(99)00032-4.
Dutta, P., S. Bhowmik, and S. Das. 2011. “Methane and carbon dioxide sorption on a set of coals from India.” Int. J. Coal Geol. 85 (3–4): 289–299. https://doi.org/10.1016/j.coal.2010.12.004.
Geng, J., J. Xu, W. Nie, S. Peng, C. Zhang, and X. Luo. 2017. “Regression analysis of major parameters affecting the intensity of coal and gas outbursts in laboratory.” Int. J. Min. Sci. Technol. 27 (2): 327–332. https://doi.org/10.1016/j.ijmst.2017.01.004.
Gerlach, R., S. K. Sathianathan, C. Siviour, and N. Petrinic. 2011. “A novel method for pulse shaping of split Hopkinson tensile bar signals.” Int. J. Impact Eng. 38 (12): 976–980. https://doi.org/10.1016/j.ijimpeng.2011.08.007.
Gruszkiewicz, M. S., M. T. Naney, J. G. Blencoe, D. R. Cole, J. C. Pashin, and R. E. Carroll. 2009. “Adsorption kinetics of CO2, CH4, and their equimolar mixture on coal from the Black Warrior Basin, West-Central Alabama.” Int. J. Coal Geol. 77 (1–2): 23–33. https://doi.org/10.1016/j.coal.2008.09.005.
Hu, S., E. Wang, X. Li, and B. Bai. 2016. “Effects of gas adsorption on mechanical properties and erosion mechanism of coal.” J. Nat. Gas Sci. Eng. 30 (Mar): 531–538. https://doi.org/10.1016/j.jngse.2016.02.039.
Karacan, C. O. 2003. “Heterogeneous sorption and swelling in a confined and stressed coal during CO2 injection.” Energy Fuels 17 (6): 1595–1608. https://doi.org/10.1021/ef0301349.
Karacan, C. O. 2007. “Swelling-induced volumetric strains internal to a stressed coal associated with CO2 sorption.” Int. J. Coal Geol. 72 (3–4): 209–220. https://doi.org/10.1016/j.coal.2007.01.003.
Li, C., M. Hao, Y. He, Z. Geng, and S. Wei. 2020a. “Drop-weight impact fragmentation of gas-containing coal particles.” Particuology 55 (Apr): 35–42. https://doi.org/10.1016/j.partic.2020.09.005.
Li, C., Y. Xu, P. Chen, H. Li, and P. Lou. 2020b. “Dynamic mechanical properties and fragment fractal characteristics of fractured coal-rock-like combined bodies in split Hopkinson pressure bar tests.” Nat. Resour. Res. 29 (5): 3179–3195. https://doi.org/10.1007/s11053-020-09656-w.
Pillalamarry, M., S. Harpalani, and S. Liu. 2011. “Gas diffusion behavior of coal and its impact on production from coalbed methane reservoirs.” Int. J. Coal Geol. 86 (4): 342–348. https://doi.org/10.1016/j.coal.2011.03.007.
Tao, J., X.-G. Yang, H.-T. Li, J.-W. Zhou, G. Fan, and G.-D. Lu. 2020. “Effects of in-situ stresses on dynamic rock responses under blast loading.” Mech. Mater. 145 (Jun): 103374. https://doi.org/10.1016/j.mechmat.2020.103374.
Xu, X., Q. Wang, H. Liu, W. Zhao, Y. Zhang, and C. Wang. 2020. “Experimental investigation on the characteristics of transient electromagnetic radiation during the dynamic fracturing progress of gas-bearing coal.” J. Geophys. Eng. 17 (5): 799–812. https://doi.org/10.1093/jge/gxaa030.
Yang, W. 1995. Macro and micro fracture mechanics, 366. Beijing: China Defense Industry Press.
Zhang, X., H. Hao, and Z. Wang. 2014. “Experimental investigation of monolithic tempered glass fragment characteristics subjected to blast loads.” Eng. Struct. 75 (Sep): 259–275. https://doi.org/10.1016/j.engstruct.2014.06.014.
Information & Authors
Information
Published In
Journal of Energy Engineering
Volume 148 • Issue 6 • December 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Jan 21, 2022
Accepted: May 18, 2022
Published online: Aug 26, 2022
Published in print: Dec 1, 2022
Discussion open until: Jan 26, 2023
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.