"One Ventilation and Three Preventions"and Improvement of Ventilation Technology in Fully Mechanized Coal Mining Face with High Mining Height
The underground ventilation conditions meet the requirements of coal mine safety regulations,which can not only provide sufficient fresh air and good climate conditions for underground workers,but also dilute and eliminate toxic and harmful gases such as coal mine gas,as well as floating dust.Gas,coal dust,and fires will not cause trouble casually.So,"one ventilation and three preventions"have become the top priority of coal mine safety production.The 5306 fully mechanized mining face of Sihe Coal Mine adopts a one-time full height coal mining process,which has a high yield per unit and high production intensity.The absolute gas emission from the fully mechanized mining face during production is high,which is very easy to cause gas exceeding the limit,and the three-prevention problems are very prominent.In this paper,the basic tasks and importance of mine ventilation were discussed,the technical requirements of ventilation facilities were emphasized,the process of improving ventilation technology in 5306 working face of Sihe Coal Mine was described in detail,and the improvement results were checked and analyzed.
coal mine safetyone ventilation and three preventionswind resistance reducingfully mechanized mining with high mining heightimprovement of ventilation system
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