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针对新集二矿历次煤与瓦斯突出特征的考察研究,分析得出新集二矿煤与瓦斯突出对反映地应力和瓦斯压力的指标较为敏感。同时采用现场实测与实验室模拟相结合的分析方法对新集二矿防突预测指标的敏感性进行了系统的分析,并确定了各预测指标的临界值。结果表明,对于区域预测,瓦斯压力指标比瓦斯含量指标要敏感;对于局部预测,6#煤层和13-1#煤层的突出敏感性为S>K1>△h2,8#煤层的突出敏感性为K1>S>△h2。
According to the investigation and study on the previous coal and gas outburst characteristics in Xinji No.2 coal mine, it is concluded that the coal and gas outburst in Xinji No.2 coal mine are more sensitive to the reflection of geostress and gas pressure. At the same time, the sensitivity of the new set of mine outburst prediction index was systematically analyzed with the combination of on-site and laboratory simulation, and the critical value of each forecast index was determined. The results show that for the regional prediction, the gas pressure index is more sensitive than the gas content index. For the local prediction, the prominent sensitivity of 6 # and 13-1 # coal seam is S> K1> △ h2. K1> S> △ h2.