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CFD modeling of coal dust migration in an 8.8-meter-high fully mechanized mining face

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  • Du, Tao
  • Nie, Wen
  • Chen, Dawei
  • Xiu, Zihao
  • Yang, Bo
  • Liu, Qiang
  • Guo, Lidian

Abstract

The largest mining height of the fully mechanized mining face in the world is currently 8.8 m. A working face of this size has various problems, including the production of large amounts of dust, complicated dust migration laws, and difficulty in efficiently implementing dust removal measures. In view of these problems, computational fluid dynamics (CFD) modeling was used to simulate air flow and dust movement in a super-large fully mechanized mining face. The results were qualitatively and quantitatively analyzed, and field measurements were made to verify the accuracy of the simulated results. The simulation results showed that the air-flow increases, decreases, and then increases again during the movement of the working face. A high-concentration dust belt, of length approximately 120 m and a concentration of more than 3500 mg/m3, was formed by the roller. Dust reduction measures, such as spray dust-removal agents or chemical dust-removal agents, are proposed. These measures can provide a clean working environment and theoretical guidance for the safe production of coal in the future.

Suggested Citation

  • Du, Tao & Nie, Wen & Chen, Dawei & Xiu, Zihao & Yang, Bo & Liu, Qiang & Guo, Lidian, 2020. "CFD modeling of coal dust migration in an 8.8-meter-high fully mechanized mining face," Energy, Elsevier, vol. 212(C).
    • Handle: RePEc:eee:energy:v:212:y:2020:i:c:s0360544220317242
    DOI: 10.1016/j.energy.2020.118616
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    References listed on IDEAS

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    1. Klimanek, Adam & Bigda, Joanna, 2018. "CFD modelling of CO2 enhanced gasification of coal in a pressurized circulating fluidized bed reactor," Energy, Elsevier, vol. 160(C), pages 710-719.
    2. Xu, Changwei & Nie, Wen & Liu, Zhiqiang & Peng, Huitian & Yang, Shibo & Liu, Qiang, 2019. "Multi-factor numerical simulation study on spray dust suppression device in coal mining process," Energy, Elsevier, vol. 182(C), pages 544-558.
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    Cited by:

    1. Cai, Peng & Liu, Zhenyi & Li, Pengliang & Zhao, Yao & Li, Mingzhi & Li, Ranran & Wang, Chen & Xiu, Zihao, 2023. "Effects of fuel component, airflow field and obstacles on explosion characteristics of hydrogen/methane mixtures fuel," Energy, Elsevier, vol. 265(C).
    2. Sheng Wang & Xuelong Li & Qizhi Qin, 2022. "Study on Surrounding Rock Control and Support Stability of Ultra-Large Height Mining Face," Energies, MDPI, vol. 15(18), pages 1-20, September.
    3. Gan, Jian & Wang, Deming & Xiao, Zhongmin & Wang, Ya-nan & Zhang, Kang & Zhu, Xiaolong & Li, Shuailong, 2023. "Experimental and molecular dynamics investigations of the effects of ionic surfactants on the wettability of low-rank coal," Energy, Elsevier, vol. 271(C).
    4. Nie, Wen & Cha, Xingpeng & Bao, Qiu & Peng, Huitian & Xu, Changwei & Zhang, Shaobo & Zhang, Xu & Ma, Qingxin & Guo, Cheng & Yi, Shixing & Jiang, Chenwang, 2023. "Study on dust pollution suppression of mine wind-assisted spray device based on orthogonal test and CFD simulation," Energy, Elsevier, vol. 263(PB).
    5. Tian, Zhang & Mu, Xinsheng & Deji, Jing & Shaocheng, Ge & Xiangxi, Meng & Shuli, Zhao & Xiaowei, Zhang, 2023. "Influence of aerodynamic pressure on dust removal by supersonic siphon atomization," Energy, Elsevier, vol. 282(C).

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