Study and Prevention on the Diffusion Rule of Dust Pollution in the Coal Mine Whole-Rock Fully Mechanized Workface

Abstract:

The mathematical model of solving two-phase flow of gas and dust particles was built by established the k-ε-Θ-kp equation. Moreover, by using FLUENT software, the diffusion rule of dust pollution in the whole-rock fully mechanized workface was researched with different air-draft amount. The result showed that when the air-draft amount increased from 320m3/min to 600m3/min, de-dust ability of extraction fan drum is gathering strength, pervasion intensity of producing dust is continuously decreased in tunneling place. The simulation results of each measuring point are basically consistent with the field measurement results.

• Periodical: Applied Mechanics and Materials (Volumes 246-247)
• Pages: 608-613
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.246-247.608
• Online since: December 2012
• Authors: Wei Min Cheng, Wen Nie, Gang Pan, Sen Cao, Xin Hua Zhang
• Keywords: Air-Draft Amount, Coal Mine, Dust Pollution, K-Ε-Θ-Kp Equation

References

[1] Nie Wen, Cheng Weimin, GuoYunxiang. The research and application of air curtain closed-end dedusting system in full-heading face. Safety in Coal Mines, Vol. 40 No. 3, pp.19-22 (2009).

[2] Wang Hong. The 40 years developmental review of the fully mechanized mine roadway heading technology in China. Journal of China Coal Society, Vol. 35 No. 11, pp.1815-1820 (2010).

[3] Klemens R., Kosinski P., Wolanski P. Numerical study of dust lifting in a channel with vertical obstacles. Journal of Loss Prevention in the Process Industries, Vol. 14 No. 6, pp.469-473 (2001).

DOI: 10.1016/s0950-4230(01)00035-3

[4] Cheng Weimin, Liu Xiangsheng, Ruan guoqiang. The theory and technology of enclosure dust- laying model in speeded advance of coal road. Journal of China Coal Society, Vol. 34 No. 2, pp.203-207 (2009).

[5] Wang Xiaozhen, Jiang Zhongan, Wang Shan. Numerical simulation of distribution regularities of dust concentration during the ventilation process of coal roadway driving. Journal of China Coal Society, Vol. 32 No. 4, pp.386-390 (2007).

[6] Nakayama S., Uehino K., Inoue M. 3 Dimensional flow measurement at heading face and application of CFD. Vol. 112 No. 9, pp.639-644 (1996).

[7] Nie Wen, Cheng Weimin, Yao Yujing. Numerical simulation of vortex Air curtain suction dust control system and its applications. Science & Technology Review, Vol. 29 No. 9, pp.48-52 (2011).

[8] Nie Wen, Liu Huajunan, Yu Pingcan. Research on airflow law in hydraulic support thin seam coal mining face. Industrial Safety and Environmental Protection. Vol. 38, No. 2, pp.77-80 (2012).

[9] Martin Sommerfeld. Validation of a stochastic lagrangian modeling approach for inters- particle collisions in homogeneous isotropic turbulence. International Journal of Multiphase Flow. Vol. 27 No. 10, pp.1829-1858 (2001).

DOI: 10.1016/s0301-9322(01)00035-0

[10] Shao X. M, Liu , Yu Z.S. Interactions between two sedimenting particles with different sizes. Applied Mathematics and Mechanics: English Edition. Vol. 26 No. 3, pp.407-414 (2005).

DOI: 10.1007/bf02440092