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煤与瓦斯突出危险性预测是防治煤与瓦斯突出的关键环节,瓦斯突出预测的核心又是预测指标的敏感程度问题。为了预测义安矿掘进工作面煤与瓦斯突出危险性,深入分析了突出预测指标的性质和适用条件,并统计分析了掘进工作面突出预测指标区间分布特征和突出预测指标的影响因素,同时结合标准差和模糊优先关系排序决策,最终确定义安矿二1煤层掘进工作面现有突出预测敏感指标为q和△h2。
Coal and gas outburst risk prediction is the key to preventing and controlling coal and gas outburst. The core of gas outburst prediction is the sensitivity of forecasting index. In order to predict the danger of coal and gas outburst in the heading face of Yian Mine, the nature and applicable conditions of the salient predictors are analyzed in depth. The influencing factors of the interval distribution characteristics of salient predictors and the prominent predictors of the heading face are statistically analyzed. Standard deviation and fuzzy priority ranking decision-making, and finally determine the sensitive forecasting index of qi and h2 for the TBM working face of Yi’an Mine.