近距离煤层群采煤面瓦斯综合治理方案探究

Research on Comprehensive Gas Control Scheme of Coal Mining Face in Close Distance Coal Seam Group

西铭煤矿北七盘区48708采煤面瓦斯赋存条件复杂,通过分析瓦斯涌出来源及瓦斯涌出规律,改进北七盘区近距离煤层群抽采技术方案,创新性的采用了下邻近层穿层钻孔、高位裂隙走向大孔径钻孔、高位裂隙短钻孔、穿煤柱大孔径孔等技术,重点优化了钻孔设计与布置方式,取得了较好的瓦斯抽采效果。

The gas storage conditions of the 48708 coal face in north 7 panel of Ximing Coal Mine are complex,based on the analysis of gas emission source and gas emission law,the technical scheme of short distance coal seam group drainage in north 7 panel is improved,and the technologies such as drilling through the lower adjacent strata,large hole drilling along high fracture strike,short hole drilling in high fracture and large hole drilling through coal pillar are innovatively adopted.The design and layout of boreholes are optimized,and good gas drainage effect is achieved.