【摘要】 相对敏感度是一种反映预测指标随煤层突出危险性变化而变化的指标，其以统计期间各预测指标的最低测定值为基础，计算并统计出预测期间各预测值的平均相对敏感度和最大相对敏感度，定量反映各预测指标对预测煤层突出危险的敏感程度。对3个煤矿的采掘工作面突出预测进行了跟踪，计算出各预测指标的相对敏感度，并对预测期间的瓦斯动力现象进行了分析。结果表明，单位长度钻孔瓦斯涌出量指标的相对敏感度平均值比其他预测指标高2倍以上，最高值比其他指标高5倍以上。研究为确定预测煤层的敏感指标提供了一种新的分析方法。更多还原

【Abstract】 Relative sensitivity is an indicator that reflects the changes in predictive indicators with the risk of coal seam outburst.It is based on the lowest measured values of each predictive indicator during the statistical period, and calculates and calculates the average and maximum relative sensitivity of each predictive value during the prediction period, quantitatively reflecting the sensitivity of each predictive indicator to the predicted risk of coal seam outburst.The prediction of mining face outbursts in three coal mines were tracked, the relative sensitivity of each prediction indicator was calculated, and the gas dynamic phenomena during the prediction period was analyzed.The results indicate that the average relative sensitivity of unit length of borehole gas emission index was more than 2 times higher than other predictive indicators, and the highest value was more than 5 times higher than other indicators.The study provides a new analytical method for determining sensitive indicators for predicting coal seams.更多还原