A study on preventing spontaneous combustion of residual coal in a coal mine goaf

Yongjun Wang, Xiaoming Zhang, Yuichi Sugai, Kyuro Sasaki

研究成果: ジャーナルへの寄稿学術誌査読

抄録

The effectiveness of grouting scheme has been simulated to prevent the coal spontaneous combustion at a goaf in Haizi Colliery, China. The colliery has been operated for long period over 27 years and has a complex ventilation network including airflow leakages which could possibly lead to the spontaneous combustion of coal at goafs. Firstly, the mine ventilation simulator MIVENA was used to analyze the mine ventilation network airflows to control airflows in and out of working faces and goafs. As the second approach, numerical simulations were carried by the simulator FLUENT in order to predict spontaneous combustion of residual coal with leakage flow in the #3205 goaf. It was cleared that the goaf can be divided into three zones based on oxygen concentration in the goaf area. Finally, the numerical simulation results show that the slurry grouting method is able to be an effective and economical method by reducing porosity in the goaf area to prevent spontaneous combustion of residual coal.
本文言語英語
論文番号 712349
ページ(範囲)1-8
ページ数8
ジャーナルJournal of Geological Research
2015
DOI
出版ステータス出版済み - 3月 2015

All Science Journal Classification (ASJC) codes

  • 燃料技術
  • 地盤工学および土木地質学

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