Geomechanics and Engineering

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Numerical simulation on gas continuous emission from face during roadway excavation

  • Chen, Liang (Key Laboratory of Coal Mine Gas and Fire Prevention and Control of the Ministry of Education, China University of Mining and Technology) ;
  • Wang, Enyuan (Key Laboratory of Coal Mine Gas and Fire Prevention and Control of the Ministry of Education, China University of Mining and Technology) ;
  • Feng, Junjun (Key Laboratory of Coal Mine Gas and Fire Prevention and Control of the Ministry of Education, China University of Mining and Technology) ;
  • Li, Xuelong (Key Laboratory of Coal Mine Gas and Fire Prevention and Control of the Ministry of Education, China University of Mining and Technology) ;
  • Kong, Xiangguo (Key Laboratory of Coal Mine Gas and Fire Prevention and Control of the Ministry of Education, China University of Mining and Technology) ;
  • Zhang, Zhibo (Key Laboratory of Coal Mine Gas and Fire Prevention and Control of the Ministry of Education, China University of Mining and Technology)
  • Received : 2015.10.01
  • Accepted : 2015.12.17
  • Published : 2016.03.25
⟨ Previous Next ⟩

Abstract

With the mining depth continuously increasing, gas emission behaviors become more and more complex. Gas emission is an important basis for choosing the method of gas drainage, gas controlling. Thus, the accurate prediction of gas emission is of great significance for coal mine. In this work, based on the sources of gas emission from the heading faces and the fluid-solid coupling process, we established a gas continuous dynamic emission model, numerically simulated and applied it to the engineering. The result was roughly consistent with the actual situation and shows the model is correct. We proposed the measures of reducing the excavation distance and borehole gas drainage based on the model. The measures were applied and the result shows the overproof problem of gas emission disappears. The model considered the influence factors of gas emission wholly, and has a wide applicability, promotional value. The research is of great significance for the controlling of gas disaster, gas drainage and pre-warning coal and gas outbursts based on gas emission anomaly at the heading face.

Keywords

Acknowledgement

Supported by : Chinese Ministry of Education

References

  1. Fu, H., Jiang, W. and Shan, X. (2012), "Study on coupling algorithm on coal mine gas emission forecast model", J. China Coal Soc., 37(4), 654-658.
  2. Fu, H., Xie, S., Xu, Y. and Chen, Z. (2014), "Gas emission dynamic prediction model of coal mine based on ACC-ENN algorithm", J. China Coal Soc., 39(7), 1296-1301.
  3. Guo, X., Cai, W., Ma, S., Jiang, Z. and Chen, X. (2010), "Continuity prediction of gas emission during drivage in coal seam based on stable percolation", J. China Coal Soc., 35(6), 932-936.
  4. Guo, P., Cheng, Y., Jin, K., Li, W., Tu, Q. and Liu, H. (2014), "Impact of effective stress and matrix deformation on the coal fracture permeability", Transport in Porous Media, 103(1), 99-115. https://doi.org/10.1007/s11242-014-0289-4
  5. Gao, Y., Lin, B., Yang, W., Li, Z., Pang, Y. and Li, H. (2015), "Drilling large diameter cross-measure boreholes to improve gas drainage in highly gassy soft coal seams", J. Natural Gas Sci. Eng., 26, 193-204. https://doi.org/10.1016/j.jngse.2015.05.035
  6. Islam, M.R. and Shinjo, R. (2009), "Numerical simulation of stress distributions and displacements around an entry roadway with igneous intrusion and potential sources of seam gas emission of the Barapukuria coal mine, NW Bangladesh", Int. J. Coal Geol., 78(4), 249-262. https://doi.org/10.1016/j.coal.2009.03.001
  7. Jing, G., Xu, S., Heng, X. and Li, C. (2011), "Research on the prediction of gas emission quantity in coal mine based on grey system and linear regression for one element", Procedia Engineering, 26, 1585-1590. https://doi.org/10.1016/j.proeng.2011.11.2342
  8. Li, Y. and Zhao, D. (2011), "Prediction study on gas emission of the first face in the 11-2 coal seam in Liuzhuang Coal Mine", Procedia Engineering, 26, 883-889. https://doi.org/10.1016/j.proeng.2011.11.2251
  9. Li, X. and Zhou, W. (2012), "The risk forecast of coal and gas outburst on blasting-working face by the method of gas peak-to-valley ratio", J. China Coal Soc., 37(S1), 104-108.
  10. Li, R., Shi, S., Wu, A., Luo, W. and Zhu, H. (2014), "Research on prediction of gas emission based on selforganizing data mining in coal mines", Procedia Engineering, 84, 779-785. https://doi.org/10.1016/j.proeng.2014.10.496
  11. Li, Z., Wang, E., Ou, J. and Liu, Z. (2015), "Hazard evaluation of coal and gas outbursts in a coal-mine roadway based on logistic regression model", Int. J. Rock Mech. Min. Sci., 80, 185-195.
  12. Lin, B., Yan, F., Zhu, C., Zhou, Y., Zou, Q., Guo, C. and Liu, T. (2015), "Cross-borehole hydraulic slotting technique for preventing and controlling coal and gas outbursts during coal roadway excavation", J. Natural Gas Sci. Eng., 26, 518-525. https://doi.org/10.1016/j.jngse.2015.06.035
  13. Liu, H. and Rutqvist, J. (2010), "A new coal-permeability model: Internal swelling stress and fracture-matrix interaction", Transport in Porous Media, 82(1), 157-171. https://doi.org/10.1007/s11242-009-9442-x
  14. Liu, J., Liu, Z., Xue, J., Gao, K. and Zhou, W. (2015), "Application of deep borehole blasting on fully mechanized hard top-coal pre-splitting and gas extraction in the special thick seam", Int. J. Min. Sci. Technol., 25(5), 755-760. https://doi.org/10.1016/j.ijmst.2015.07.009
  15. Lunarzewski, L.L.W. (1998), "Gas emission prediction and recovery in underground coal mines", Int. J. Coal Geol., 35(1), 117-145. https://doi.org/10.1016/S0166-5162(97)00007-4
  16. Ou, J., Wang, E., Ma, G., Wang, C., Song, D., Chen, P. and Li, N. (2012), "Coal rupture evolution law of coal and gas outburst process", J. China Coal Soc., 37(6), 978-983.
  17. Palmer, I. (2009), "Permeability changes in coal: Analytical modeling", Int. J. Coal Geol., 77(1-2), 119-126. https://doi.org/10.1016/j.coal.2008.09.006
  18. Perera, M.S.A., Ranjith, P.G. and Choi, S.K. (2013), "Coal cleat permeability for gas movement under triaxial, non-zero lateral strain condition: A theoretical and experimental study", Fuel, 109, 389-399. https://doi.org/10.1016/j.fuel.2013.02.066
  19. Qin, Y., Liu, P., Hao, Y., Wang, J. and Wu, J. (2015), "Mathematical model of gas emission of coal wall and its numerical analysis", J. Liaoning Tech. Univ., 34(10), 1105-1110.
  20. Saghafi, A., Pinetown, K.L., Grobler, P.G. and van Heerden, J.H.P. (2008), "$CO_2$ storage potential of South African coals and gas entrapment enhancement due to igneous intrusions", Int. J. Coal Geol., 73(1), 74-87. https://doi.org/10.1016/j.coal.2007.05.003
  21. Wang, G., Xue, D., Gao, H. and Zhou, H. (2012), "Study on permeability characteristics of coal rock in complete stress-strain process", J. China Coal Soc., 37(1), 107-112.
  22. Wang, T., Wang, Z., Liu, H., Guan, Y. and Zhan, S. (2014), "Discussion about the mechanism of gas disaster induced by coal bump", J. China Coal Soc., 39(2), 371-376.
  23. Wei, C., Xu, M., Sun, J., Li, X. and Ji, C. (2011), "Coal mine gas emission gray dynamic prediction", Procedia Engineering, 26, 1157-1167. https://doi.org/10.1016/j.proeng.2011.11.2286
  24. Wu, L., Liu, S., Chen, D., Yao, L. and Cui, W. (2014), "Using gray model with fractional order accumulation to predict gas emission", Natural Hazards, 71(3), 2231-2236. https://doi.org/10.1007/s11069-013-0960-z
  25. Xue, S., Yuan, L., Xie, J. and Wang, Y. (2014), "Advances in gas content based on outburst control technology in Huainan, China", Int. J. Min. Sci. Technol., 24(3), 385-389. https://doi.org/10.1016/j.ijmst.2014.03.017
  26. Yang, S., Tang, J., Zhao, S. and Hua, F. (2010), "Early Warning on Coal and Gas Outburst with Dynamic Indexes of Gas Emission", Disaster Advances, 3(4), 403-406.
  27. Yu, Q., Wang, K. and Yang, S. (2000), "Study on pattern and control of gas emission at coal face in China", J. China Univ. Min. Technol., 29(1), 9-14.
  28. Yu, B., Su, C. and Wang, D. (2015), "Study of the features of outburst caused by rock cross-cut coal uncovering and the law of gas dilatation energy release", Int. J. Min. Sci. Technol., 25(3), 453-458. https://doi.org/10.1016/j.ijmst.2015.03.020
  29. Zhang, X., Shan, J. and Peng, S. (2009), "Mathematical geology technique and method for prediction of gas content and emission", J. China Coal Soc., 34(3), 350-354.

Cited by

  1. Study on the mechanical properties and rheological model of an anchored rock mass under creep-fatigue loading vol.23, pp.6, 2020, https://doi.org/10.12989/gae.2020.23.6.535