瓦斯涌出异常预报煤与瓦斯突出

Predicting coal and gas outburst with monitored gas consistence

通过对掘进工作面突出前夕煤壁瓦斯浓度变化规律的研究,提出了利用瓦斯浓度变化预报煤与瓦斯突出的方法,并建立了突出预报数学模型.研究表明:对瓦斯浓度序列的移动平均线、振幅、频次和方差等几个方面的综合评判,可预报掘进工作面突出的发生,并以潘一矿突出实例进行验证,表明在突出前2.5 h瓦斯浓度变化出现异常,根据这一异常可实现突出预报.

By studying the regulations of the gas released from coal seam before coal and gas outburst, a method of predicting coal and gas outburst was proposed and mathematics models were established. Based on judging the sequence of moving average line, amplitude, frequency and variance of gas content, coal and gas outburst can be predicted. A case of coal and gas outburst was validated in Panyi Mine, and the results show that there is anomaly before outburst in two and a half hours.