Numerical Simulation of the Dust Suppression with Forced Ventilation Shunt Mode in Fully Mechanized Workface

Abstract:

Based on fluid mechanics, the theory of gas-solid flow and jet theory etc. Dust migration regularity in fully mechanized workface was studied and simulated under far-pressing-near-suction ventilation with FLUENT Simulation technology. When the ratio of blowing to suction (μ) is larger than 1, the range of high dust concentration reduces and the maximum dust concentration decreases. The sketch of flow field of the different μ, the short of traditional far-pressing-near-suction ventilation and the superiority in practical of dust removal mode with the forced ventilation shunt were summarized and analyzed. The dust migration regularity in different shunt parameters (K) in this mode was simulated. Increasing shunted air quantities (Q) is beneficial to the control of dust diffusion in the roadway. But dust concentration near pressure air side will increase if the value of the shunted air quantities is over a critical value.

• Periodical: Advanced Materials Research (Volumes 726-731)
• Pages: 892-897
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.726-731.892
• Online since: August 2013
• Authors: Jun Meng, Zhen Jun Jiang, Miao Miao Zhang, Yue Ping Qin
• Keywords: Dust Migration, Dust Suppression, Forced Ventilation Shunt, Fully Mechanized Workface, Numerical Simulation

References

[1] Coal Mine Safety Regulations. Beijing: Coal Industry Press (2010) (In Chinese).

[2] B.H. Niu, Y.X. Chen, H.J. Qiu. Mining Safety & Environmental Protection, 2006, 33(6) (In Chinese).

[3] Yueping Qin, Lijie Cui, Miaomiao Zhang. Journal of University of Science and Technology Beijing, 2011(07) (In Chinese).

[4] F. J. Wang. Computational Fluid Dynamics Analysis-Software Principles and Applications. Beijing: Tsinghua University Press, 2004(In Chinese).

[5] Jianwen Zhang, Zhenya Yang, Zheng Zhang. Fundamentals and Applications of numerical simulation of fluid flow and heat transfer process. Beijing: Chemical Industry Press, 2008(In Chinese).

[6] Zhanyou Sa, Feng Li, Bo Qin, Xiao-hong Pan. Safety Sci., (2011).

[7] Junjie Zhou, Guoquan Xu,et al. Fluent Engineering Technology and Case Study. Beijing: China Water Power Press, 2008 (In Chinese).

[8] X. Z. Wang, Z.A. Jiang, S.W. Wang. China Coal Soc, 2007, 32(4):386(In Chinese).

[9] C.F. Du, H. Wang, Z.A. Jiang, et al. Journal of University of Science and Technology Beijing, 2010,32(8):957-962 (In Chinese).

[10] J.Z. Lin, X. D. Ruan. Fluid Mechanics. Beijing: Tsinghua University Press, 2005: 88 (In Chinese).

[11] Xianfeng Qi, Jimin LI, Deyong Fang. Safety in Coal Mines,2007(10) (In Chinese).