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Numerical Simulation of Abandoned Gob Methane Drainage through Surface Vertical Wells

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  • Wei Qin
  • Jialin Xu
  • Guozhong Hu

Abstract

The influence of the ventilation system on the abandoned gob weakens, so the gas seepage characteristics in the abandoned gob are significantly different from those in a normal mining gob. In connection with this, this study physically simulated the movement of overlying rock strata. A spatial distribution function for gob permeability was derived. A numerical model using FLUENT for abandoned gob methane drainage through surface wells was established, and the derived spatial distribution function for gob permeability was imported into the numerical model. The control range of surface wells, flow patterns and distribution rules for static pressure in the abandoned gob under different well locations were determined using the calculated results from the numerical model.

Suggested Citation

  • Wei Qin & Jialin Xu & Guozhong Hu, 2015. "Numerical Simulation of Abandoned Gob Methane Drainage through Surface Vertical Wells," PLOS ONE, Public Library of Science, vol. 10(5), pages 1-18, May.
    • Handle: RePEc:plo:pone00:0125963
    DOI: 10.1371/journal.pone.0125963
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    Cited by:

    1. Zhaolong Ge & Kai Deng & Liang Zhang & Shaojie Zuo, 2020. "Development potential evaluation of CO2‐ECBM in abandoned coal mines," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 10(3), pages 643-658, June.

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