进行瓦斯涌出量的通风技术监测,通常是利用安装在井下固定地点的沼气测量装置的测量信号,由设在矿山救护站的记录仪记录,并用程序计算机来分析。由此,沼气含量和瓦斯涌出量的变化趋势特别重要。沼气含量的微小和短时变化同样被记录下来,但不能做连续处理。 过去的研究表明,在发生煤与瓦斯突出的煤矿,采用局部通风的掘进巷道一天内沼气量的峰值和平均值之间的差值,可以说明地质破坏区域。此差值用△c表示,它主要受爆破作业后游离沼气的影响。 Ventilation monitoring of the gas emission is usually performed using a measuring signal from a biogas measuring device installed at a fixed point downhole and is recorded by a logger at a mine ambulance depot and analyzed using a programmed computer. Therefore, the trend of biogas content and gas emission is particularly important. Micro and short-term changes in biogas content are also recorded, but can not be done continuously. Past studies have shown that the difference between the peak and average daily biogas volume in a partially ventilated roadway in coal and gas outburst coal mines can explain the area of ​​geological damage. The difference is indicated by Δc, which is mainly affected by the free biogas after the blasting operation.