Practice of Comprehensive Fire Prevention and Extinguishing Technology for the 1307 Repeated Mining Face of Xinmei Company
In view of the problem of spontaneous combustion in the goaf during the mining process of the 1307 repeated mining face in Xin'an Coal Mine,a study on comprehensive fire prevention and extinguishing work in the goaf of the repeated mining face is conducted using a method combined with theoretical analysis and on-site actual measurement.High quality spray sealing slurry and large-area saturated type filling of the goaf are adopted as the main measures,and a comprehensive and fully covered fire prevention and extinguishing three-dimensional network is formed by adopting the combination of upper roadway grouting and lower roadway nitrogen injection;The way of using cement and water glass is adopted to quickly seal the air leakage channel,reinforce the roof and two sides of the roadway,which plays a positive role in roof management and control and fire prevention and extinguishing management during the period of roadway excavation.By implementing comprehensive fire prevention and extinguishing measures such as"adjustment,measurement,sealing,spraying,injection,and filling",etc,the oxygen content and temperature changes in the goaf are controlled to achieve the purpose of preventing spontaneous combustion of coal.
repeated mining facecoal spontaneous combustionfire prevention and extinguishing technology
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