Directed at fire prevention in goaf,the paper proposes a method of injecting nitrogen and controlling nitrogen air to flow direction using fugitive air and controlling air quantity in gob.

• 为解决采空区防火问题,提出从采空区漏入风一侧顺流注氮,充分利用采空区漏风流向控制氮气的流向并控制漏风量的注氮思路。