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本文对谢二矿四水平轨道石门施工中发生的延期突发性煤与瓦斯突出事例经过进行了分析,认为延期长达近四小时的突出是由于地应力随采深的加深而高度集中的原因所致,因而会出现突出前瓦斯涌出量极小的现象。为此,在这类地区施工中应加强对地应力的考察,并在一定范围内施加钻孔以探明煤层赋存的条件。
In this paper, the case of delaying sudden coal and gas outburst occurred in the construction of four horizontal orbiting Shimen in Xie’e Mine was analyzed. It is considered that the delay of up to nearly four hours is due to the high concentration of earth stress with deepening of deep mining As a result, there will be a prominent phenomenon of the former gas emission is extremely small. Therefore, in this kind of area construction, the investigation of earth stress should be strengthened and a certain range of drilling holes should be drilled to find out the conditions for the occurrence of coal seams.