论神府2^(-2)煤层煤岩组成与煤炭自燃的关系

ON RELATIONSHIP OF COAL PETROLOGICAL COMPOSITION TO SPONTANEOUS COMBUSTION OF COAL FROM 2^(-2) COAL SEAM IN SHENFU COAL FIELD

本文研究了陕北神府矿区大柳塔井田2^(-2)煤层中煤样的显微组成,岩石类型及煤的300℃前氧化放热与燃点的关系。实验中发现,丝质组以及丝炭氧化放热量最大而燃点最低,镜质组以及镜煤氧化放热量最小,而燃点最高。随着各煤岩类型中丝质组含量的增高,其氧化放热量增加,燃点降低。因此丝质组及丝炭是最易自燃的显微组分和煤岩类型,并对其易自燃的原因进行了探讨。

The relationship of coal maceral, lith type and coal oxidation heat released below 300℃ to the burning point of coal sample from Daluta Coal Mine 2^(-2) coal seam of Shenfu Coal Field in the north of Shaanxi has been studied. Tests show that the oxidation heat released of fusinite group and fusain is greatest, but that of vitrinite group and vitrain is least. The burning point of the former is lowest, and that of the latler is highest. The oxidation heat released is increased and burning point is decreaset with increase of fusinite group in lithotype. The fusinite group and fusain are easiest to ignite spontaneously, and thus its causes are studied.