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邻近巷道区域预抽孔与迈步钻场施工预抽孔是余吾煤业采取的2种区域防突措施,为了分析2种防突措施的防突效果及补充措施的使用与否,从二者的抽采效果、对掘进速度影响及经济成本3个方面进行了对比分析。分析得出,区域预抽孔比边掘边抽防突效果明显,掘进速度大幅度地提高。
Pre-pumping holes in the adjacent roadway area and pre-pumping holes in the moving drilling site are two kinds of regional outburst measures adopted by Yuwu Coal Industry. In order to analyze the outbreak prevention effect of two kinds of outburst prevention measures and whether the supplementary measures are used or not, Pumping effect, impact on the speed of the tunneling and economic costs were compared between the three aspects. The analysis shows that the pre-pumping in the area is more effective than the edge-boring and edge-pumping, and the excavation speed is greatly improved.