煤炭自然发火事故树分析及预防

Analysis on spontaneous combustion of coal fires and prevention based on fault tree analysis

为了有效地控制煤炭自然发火,减少矿井火灾的发生,依据系统工程的原理,结合煤炭自燃的条件建立了煤炭自然发火事故树,求解得出了事故树最小径集,利用最小径集得出了各基本事件的结构重要度,从而定性分别对砌碹巷道煤炭自然发火事故、采空区(报废采区)遗煤自然发火事故、采空区(生产采区)遗煤自然发火事故、报废巷道与停工停风独头巷道煤炭自然发火事故进行了分析,得出了引起煤炭自然发火的主要原因,并针对其提出了防治煤炭自然发火的预防措施。

In order to effectively control coal spontaneous combustion and reduce the occurrence of the mine fire, based on systems engineering principles, combining with conditions of coal spontaneous combustion a fault tree of coal spontaneous combustion was set up, the minimal path sets was solved, and the structure of importance each basic event was obtained by the minimal path sets, thus the accident of roadways coal spontaneous combustion, the accident of goal （ scrapped mining area） left coal spontaneous combustion, the accident of goaf （ the production of mining area） left coal spontaneous combustion, the accident of scrapped roadway and downtime stop the wind head- ing face coal spontaneous combustion were analyzed qualitatively. The main reasons that caused the spontaneous combustion of coal were obtained, and the measures for the prevention of coal spontaneous combustion were pro- posed.