“Y”型通风综采工作面煤层自燃危险区域划分

The Classification of Coal Seam Spontaneous Combustion Danger Zone in Y-type Ventilation Mechanized Mining Face

随着开采深度和瓦斯抽放强度的不断增大,不易自燃的煤若在提前氧化和二次氧化的双重作用下也极有可能发生自燃。基于煤自燃的煤氧复合作用理论,通过辩证分析和现场实测验证得到祁东煤矿6135"Y"型通风综采工作面的煤层自燃危险区域划分如下:6135机巷保护煤柱的自燃危害严重,6137抽放巷上覆60煤次之,而6135风巷侧采空区上覆60煤的自燃危害则不明显。

With increasing depth of mining and gas drainage intensity, nonflammable coal is very likely to develop into spontaneous combustion under a dual role of the advance oxidation and secondary oxidation. Based on the coal - oxygen complex role theory, dialec- tical analysis and field measurement verification, this paper divided the coal seam spontaneous combustion danger zone of 6135 Y - type ventilation mechanized mining face of Qidong Coal Mine as follows： the spontaneous combustion hazard of the 6135 machine alley pro- tection pillar is serious harm; the 6137 drainage roadway overlying 6o coal followed, and the spontaneous combustion hazard of 60 coal covered the goaf near the 6135 wind lane is not obvious harm.