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白羊岭煤矿15#煤层为缓倾斜突出煤层,由于受断层影响,在掘进过程中频繁面临石门揭煤。预计揭煤地点有断层发育,且均处于采掘应力叠加带。为了确保井底车场副井绕道石门揭煤过程中安全揭穿缓倾斜突出危险性煤层,提出了施工探煤孔控制煤层层位、施工瓦斯超前排放孔、排放钻孔效果检验、安全揭煤的治理模式,并进行了现场实践。结果表明:该方法效果显著,施工安全,消除了石门揭煤中的动力现象,确保了安全揭煤,矿井建设速度得以提高。
The 15 # seam in the Arctic Ridge Mine is a gently inclined outburst coal seam. Due to the influence of faults, it frequently exposes the stone in the process of tunneling. It is estimated that there are faults in the site of exposing coal and all of them are in the superimposed belt of mining stress. In order to ensure the safe exposing of gently inclined and prominent dangerous coal seam during the uncovering of bypass shaft shoal at bottom bottom of underground well, the paper puts forward the measures such as controlling the coal seam in construction, controlling the advanced discharge hole of construction gas, checking the discharge drilling effect and safely exposing coal Mode, and conducted on-site practice. The results show that the method has obvious effect and safe construction, which eliminates the dynamic phenomenon in the coal uncovering by the Shihmen and ensures safe coal uncovering and the mine construction speed can be improved.