寺河煤矿东井3号煤层突出预测敏感性指标研究

Study on outburst prediction sensitivity index of No.3 coal seam in Sihe Mine

本文以寺河矿为背景,借助煤样解吸规律的实验室研究,得到了煤样不同时间瓦斯解吸量与压力的关系及钻屑解吸K1值、Δh_(2)指标与压力的拟合关系,建立了东井区3号煤层瓦斯突出预测指标敏感性与临界值的数学模型,并通过现场设定测点,验证了突出指标数学模型的正确性。

Based on the background of Sihe coal mine,the relationship between gas desorption amount and pressure at different time and the fitting relationship between K1 index,Δh_(2) index and pressure of drilling cuttings desorption were obtained by means of laboratory research on desorption law of coal samples.The mathematical model of sensitivity and critical value of gas outburst prediction index in No.3 coal seam of East well area was established,and the correctness of the mathematical model of outburst index was verified by setting measuring points on site.