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通过对自燃煤矸石山内部烟气的平衡浓度(ψ)与温度(T)、压力比(p/p^θ)、水-空比(OL)之间关系的热力学模拟,得到了自燃煤矸石山发生爆炸的热力学条件.当α=100,p/p^θ=100,T=800~1200K时,煤矸石燃烧烟气中CO,CO2,H2,CH4和水蒸气的平衡浓度分别为:0.002~0.422,0.034~0.170,0.049~0.126,0.005~0.355和0.004~0.904,CO,H2,CH4爆炸性气体可发生化学爆炸.当α=100,p/p^θ=100,T=1200~1800K时,