煤与瓦斯突出预测技术研究现状及发展趋势

Present Situation and Progress Trend of Prediction Technology of Coal and Gas Outburst

对矿井煤与瓦斯突出预测方法的研究现状及发展趋势进行了论述及分析。目前我国大量使用的是钻屑量S、钻孔瓦斯涌出初速度q、瓦斯解吸指标Δh2 、瓦斯放散指数ΔP等钻孔静态预测方法 ,这些方法花费大量的人力、物力和财力 ,而且准确性较低。而声发射和电磁辐射等方法是很有前途的预测方法。未来煤与瓦斯突出预测的发展趋势是 ,利用声发射监测技术对变形破裂剧烈区域进行定位 ,利用电磁辐射监测技术工作面非接触连续预测 。

Present situation and progress trend of prediction technology of coal and gas outburst in mines are described and analyzed. At present such drilling static methods as drilling yields S, initial rate of gas emission in drilling hole q, gaseous desorption index Δ h 2, gas release index Δ P are used widely. These methods consume huge amount of human, material and financial resources, yet the prediction accuracy is rather low. However, the acoustic emission (AE) technology and electromagnetic radiation (EMR) technology are dynamic methods having very good prospect. The progress trend for predicting the coal and gas outburst is to locate the zone of intensive deformation and fracture with AE technology, non contact and continuous predicting the outburst with EMR technology, combined with dynamic emission of the gas attained by the environmental monitoring system.