Research on air leakage micro-circulation in coal pillar near goaf for comprehensive mechanical mining face
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    Abstract:

    As a two dimensional nonlinear transfusion model, the "stope-neighboring pillars-goaf" micro-circulation phenomenon was numerically simulated with PDE tools in MATLAB. The formation of the phenomenon and its influence on coal spontaneous combustion was also studied. The results show that the "stope-neighboring pillars-goaf" micro-circulation causes the periodic variation of relative pressure and gas composition in mining face goaf, which is called "goaf gasp". The research gives a theoretical significance for large-area fire prevention and extinguishing.

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ZHU Shuai-hu, WANG Jin-bao. Research on air leakage micro-circulation in coal pillar near goaf for comprehensive mechanical mining face[J].,2016,33(3):85-88,103

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History
  • Received:April 15,2016
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  • Online: October 27,2016
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