
INVESTIGATION OF DYNAMIC TENSILE DEFORMATION CHARACTERISTICS IN DEEP COAL ROCK
Jason Yang , School of Mining and Safety Engineering, A Hui University of Science and Technology, Huainan, ChinaAbstract
Understanding the dynamic tensile deformation characteristics of deep coal rock is essential for improving the safety and efficiency of underground mining operations. This study investigates the behavior of deep coal rock under dynamic tensile loading conditions using advanced testing techniques and numerical simulations. Samples of deep coal rock were subjected to high strain rate tensile tests to observe their deformation and failure patterns. The results reveal significant insights into the tensile strength, strain rate sensitivity, and fracture mechanisms of deep coal rock. Numerical models were developed to simulate the experimental conditions, and the outcomes were validated against the experimental data. The findings demonstrate that dynamic tensile loading significantly affects the mechanical properties of deep coal rock, leading to a better understanding of its response under real-world mining conditions. This research contributes to the development of more accurate predictive models for assessing the stability and safety of deep underground coal mines.
Keywords
Deep coal rock, Dynamic tensile deformation, High strain rate
References
Dai F, Xia K, 2010. Loading rate dependence of tensile strength anisotropy of barre granite. Pure and Applied Geophysics, 167 (11):1419-1432.
Dai F, Chen R, Xia K, (2009). A semi-circular bend technique for determining dynamic fracture toughness. Experimental Mechanics, 50(6):783-791.
Dai F, Xia K, Tang L, (2010). Rate dependence of the flexural tensile strength of Laurentian granite. International Journal of Rock Mechanics and Mining Sciences, 47(3):469 -475.
Li Diyuan, Qiu Jiadong, Li Xibing, (2015). Experimental study on dynamic tensile and compressive properties of bedding sandstone under impact loading. Chinese Journal of Rock Mechanics and Engineering, 34(10):2091 - 2097.
Li Guo, Ai Ting, Yu Bin, (2015).Acoustic emission characteristics of different lithologies under Brazilian splitting. Journal of China Coal Society, 40(4):870-881.
Man Ke, Zhou Hongwei, (2010). Research on dynamic fracture toughness and tensile strength of rock at different depths. Chinese Journal of Rock Mechanics and Engineering, 29(8):1657-1663.
Miao Leigang, Shi Biming, Qin Ruxiang, (2017). Reasonable position and drainage effect of high-level drainage roadway in 13-1 coal seam of Liuzhuang Coal Mine. Coal Engineering, 49(4):7-9.
Song Xiaolin, Xie Heping, Wang Qizhi, (2005). Failure strain of Brazilian disc samples of marble under dynamic split tests. Chinese Journal of Rock Mechanics and Engineering, 40(16 ):2953 -2959.
Xia K W, Huang S, Jha A K, (2010). Dynamic tensile test of coal, shale and sandstone using split Hopkinson pressure bar: A tool for blast and impact assessment. International Journal of Geotechnical Earthquake Engineering, 1(2):24-37.
Xie Heping, Zhou Hongwei, Xue Dongjie, Wang Hong-Wei,Zhang Ru,Gao Feng, (2012). Research and consideration on deep coal mining and critical mining depth. Journal of China Coal Society, 37 (4):535-542.
Article Statistics
Copyright License
Copyright (c) 2024 Jason Yang

This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors retain the copyright of their manuscripts, and all Open Access articles are disseminated under the terms of the Creative Commons Attribution License 4.0 (CC-BY), which licenses unrestricted use, distribution, and reproduction in any medium, provided that the original work is appropriately cited. The use of general descriptive names, trade names, trademarks, and so forth in this publication, even if not specifically identified, does not imply that these names are not protected by the relevant laws and regulations.