(1) Due to the short service life, I-steel support is used in the transportation roadway and return air roadway. In other coal seam, bolting and shotcreting are used to support the roadway, which can effectively prevent the spontaneous combustion of coal seam.<br>(2) When mining, we should pay attention to observation and strengthen the early identification of spontaneous combustion symptoms. The influence of mining methods on spontaneous combustion mainly lies in the recovery rate of coal and the length of mining time. This mine adopts the strike long wall retreating mining method with high recovery rate and simple roadway layout. Roof management adopts total caving method, artificial acid coal, cleaning floating coal to improve the recovery rate of working face as much as possible. After mining, the working face must be permanently closed within 45 days. Comprehensive prevention and control to improve fire safety.<br>(3) Seal the mined area and abandoned old lane in time;<br>(4) In the mining process of the mine, the working face adopts the "U" ventilation mode, one in one back. Fresh air and exhaust air do not pass through the goaf, with less air leakage;<br>(5) The regulating air door and air door should be set in the place where the surrounding rock is firm and the ground pressure is stable, and the increase of air leakage in the goaf or coal pillar fracture should be avoided;<br>(6) Measures shall be taken to reduce the negative pressure difference between the two ends of the air inlet and return roadway in the mining area, so as to reduce air leakage;<br>(7) The distance between the damper and the regulating damper shall have a large margin;<br>(8) Set up two-way air door, the mine can realize anti wind, so as to expand the fire accident;<br>(9) Realize the door locking, so that a group of doors can not be opened at the same time, to ensure the stability of air flow.<br>
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