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为降低赤峪煤矿2#煤层瓦斯危害,有效排放局部地点的瓦斯,采用钻孔瓦斯流量法对2#煤层超前钻孔有效影响半径进行测定,并同时采用突出指标法对测定结果进行最终确定。结果表明,综合采用钻孔瓦斯流量法和突出指标法测定煤层超前钻孔有效影响半径更具有设计针对性和施工可操作性,对赤峪煤矿2#煤层瓦斯治理工作提供实用性指导。
In order to reduce the methane hazard in seam # 2 of Chiyu coal mine and effectively discharge the gas in some localities, the effective radius of influence of advance drilling in No.2 seam was measured with the method of borehole gas flow, and the determination result was finally determined by using the salient index method. The results show that the integrated use of borehole gas flow method and salient index method to determine the effective radius of advance drilling of coal seam has more design pertinence and construction operability, and provides practical guidance for gas control in seam # 2 of Chiyu Coal Mine.