Abstract
Considering that the gas in the gas-containing roadway has an important influence on the deformation and failure of the surrounding rock, based on the law of gas migration in the rock mass, a mathematical model of fluid–solid coupling of gas-containing coal and rock is established. Through numerical simulation, the distribution of gas in roadway containing gas and the formation and development of plastic zone of surrounding rock are studied. Research results: (1) The shape of the plastic zone of the surrounding rock of the gas-containing roadway is determined by the in-situ stress. With the increase of the principal stress ratio, the plastic zone of the surrounding rock transforms from a circle to an ellipse, and finally into a butterfly shape. (2) With the increase of the principal stress ratio of the roadway, the plastic zone of the surrounding rock of the gas-containing roadway gradually develops into a butterfly shape. The volume of the plastic zone continues to increase, and the rate of increase continues to accelerate. (3) With the increase of the principal stress ratio of the roadway, the shape of the plastic zone in front of the excavation work of the gas-containing roadway has obvious differences. The circular or elliptical plastic zone has a small leading distance in front of the excavation face, and the section shrinkage rate of the plastic zone is slow, and the overall shape is truncated cone. The butterfly plastic zone has a large leading distance in front of the excavation face, and the section shrinkage rate of the plastic zone is fast. Therefore, when the speed of roadway excavation is relatively fast, it is easy to cause accidents such as coal and gas outburst in front of the butterfly blades in the butterfly plastic zone and the excavation work.
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References
Cao WZ, Shi JQ, Durucan S, Si GY, Korre A (2020) Gas-driven rapid fracture propagation under unloading conditions in coal and gas outbursts. Int J Rock Mech Min Sci 130:104325
Darcy HPC (1856) Les fontaines publiques de la ville de Dijon. Victor, Dalmont, Paris
Fan KG, Zhai DY, Jiang JF (2003) Plastic zone and Loose zone form of weak structure on roadway side. Mine Pressure and Roof Management 2003:6–8+118
Fan L, Wang WJ, Yuan C (2020a) Evaluation method of support effect of inclined soft rock roadway based on extenics. J Min Saf Eng 37:498–504
Fan L, Wang WJ, Yuan C, Peng WQ (2020b) Research on large deformation mechanism of deep roadway with dynamic pressure. Energy Sci Eng 8:3348–3364
Guo P (2018) Solid-gas coupling mathematical model and coupling effect analysis of mining gas-bearing coal rock. Coal Mine Safety 49:198–202
Harpalani S, McPherson MJ (1984) The effect of gas specimens on coal permeability test. Int J Rock Mech Min Sci Geomech Abstr 21:361–364
Kang HP, Fan MJ, Gao FQ, Zhang H (2015) Deformation characteristics and supporting technology of surrounding rock of roadway in over km deep Wells. J Rock Mech Eng 34:2227–2241
Lei YS, Yuan M, Chen X, Liu CZ, Wu X, Zhang YX (2015) Analysis of gas accident in guizhou coal mine based on human-environment matching theory. Coal 24:7–10
Liang B, Zhang MT, Liang D (1991) Numerical simulation of seepage law of compressible gas in coal seams. In: Proceedings of the academic conference on rock mechanics and engineering applications in northern China. Beijing: Science Press
Ma NJ, Ji LI, Zhao ZQ (2015a) Study on the distribution law of surrounding rock partial stress field and plastic zone of circular roadway. J China Univ Min Technol 44:206–213
Ma NJ, Zhao XD, Zhao ZQ, Li J, Guo XF, (2015b) Analysis and control of roof stability of deep mining roadway. J China Coal Soci 40:2287–2295
Wang WJ, Feng T (2005) Research on the mechanism of reinforcing two sides to control floor heave of deep mine roadway. J Rock Mech Eng 24:808–811
Wang WJ, Yuan C, Yu WJ, Wu H, Peng WQ, Peng G, Liu XS, Dong EY (2016) Research on the stability control method of surrounding rock of deep large-deformation roadway. J China Coal Soc 41:2921–2931
Wang DK, Lu RH, Peng M, Wei JP, Yao BH, Liu Y (2018) Research on permeability Anisotropy of coal containing gas. J China Coal Soc 43:1008–1015
Yu WJ, Wang WJ, Huang WZ, Wu H (2014) Deformation and failure mechanism of high stress soft rock roadway and repair control technology. J China Coal Soci 39:614–623
Zhang L (2019) Research on the energy mechanism of rock burst disaster in deep high-gas coal seam. Chongqing University
Zhang GY, Xu J, Du YG, Hu YH (1993) Influence of coal seam gas pressure on mechanical properties of coal and rock. In: Proceedings of the second National Youth Symposium on Rock Mechanics and Engineering
Zhao ZQ, Ma NJ, LIU HT, Guo XF (2016) J China Univ Min Technol 47:969–978
Zhou B, Xu J, Peng SJ, Geng JB, Yan FZ (2019) Test system for the visualization of dynamic disasters and its application to coal and gas outburst. Int J Rock Mech Min Sci 122:104083
Acknowledgements
The study was supported by Postgraduate Scientific Research Innovation Project of Hunan Province (grant numbers: CX20190794); The National Natural Science Foundation of China (Grant Numbers: 51874130; 52074115; 51804109; 51774133; 51974118; 52074117).
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Fan, L., Wang, W., Yuan, C. et al. Research on the Formation and Development of Plastic Zones in Surrounding Rocks of Roadways Containing Gas. Geotech Geol Eng 39, 3599–3610 (2021). https://doi.org/10.1007/s10706-021-01713-2
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DOI: https://doi.org/10.1007/s10706-021-01713-2