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中文摘要：
运用自行研发的大型三维煤与瓦斯突出模拟试验装置,模拟研究了石门揭露前方封闭型地质构造破坏区过程中围岩应力和瓦斯压力的分布及变化规律.结果表明：受构造应力影响,封闭型地质构造破坏区围岩初始应力较高,为正常区域初始应力的1.5～1.7倍;石门巷道推进过程中,封闭型地质构造破坏区围岩应力进一步增加,可达正常区域煤岩初始应力的2倍以上;封闭型地质构造破坏区临揭露前,仍然保持着较高的围岩应力和瓦斯压力,形成异常高的应力梯度和瓦斯压力梯度,为煤与瓦斯突出的发生提供了有利条件.
英文摘要：
Physical scale modeling was used to investigate the distribution and characteristics of gas pressure and stress ahead of the crosscut uncovering the closed type tectonic fracture zone.Modelling results show that the initial stress of the closed tectonic fracture zone surrounding rock is about 1.5~1.7 times of that of the normal zone because of the tectonic structure stress.As the crosscut roadway advances,the surrounding rock stress of the closed tectonic fracture zone increases more than 2 times of that of the normal zone;prior to the exposure of the closed tectonic damage zone,the surrounding rock maintains a higher stress and gas pressure,which forms abnormal high stress and gas pressure gradient between the crosscut working face and the tectonic zone,and thus provides favorable conditions for the occurrence of coal and gas outburst.
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