瓦斯压力在线监测预警机制应用研究

为了能准确、有效、及时的预测预报井下煤矿瓦斯突出,根据高瓦斯煤层应力场与瓦斯场具有典型的耦合效应,且瓦斯压力场与地应力场的关系主要表现在瓦斯压力的变化上这一原理,并在平煤股份十矿己15-16煤层和己17煤层安装一套煤矿瓦斯突出灾害实时监测预警系统,利用该系统中的煤层瓦斯压力实时监测功能实时在线监测揭煤区域煤层瓦斯压力变化情况,结果表明：煤层瓦斯压力变化随着瓦斯抽放时间而降低,而随着瓦斯解吸量的增加升高；监控到的瓦斯突出煤层瓦斯压力的变化符合正常规律,开发的煤矿瓦斯突出灾害监测预警系统能够连续监测煤层瓦斯压力及其变化动态,为煤矿瓦斯突出灾害监测预警提供了技术基础和有效手段。

The Application and Study of Gas Pressure Monitoring and Early Warning Mechanism

In order to be accurate, effective and timely forecast the underground coal mine gas outburst, according to the stress field of gas coal and gas field is a typical coupling effect, and gas pressure field and stress field is mainly manifested in the relationship between the change of gas pressure on this principle, and ten in leveling ore f 15 to 16 and 17 coal seam to install a set of real-time monitoring and early warning system of coal mine gas outburst disasters, use of the system in the coal seam gas pressure real-time monitoring function real-time online monitoring of uncovering coal area, the change of the coal seam gas pressure, the results show that: The variation of gas pressure in coal seam decreases with the time of gas drainage and increases with the increase of gas desorption. The monitored variation of gas pressure in coal seam of gas outburst conforms to the normal law, and the developed monitoring and warning system of coal mine gas outburst disaster can continuously monitor the coal seam gas pressure and its variation dynamics, providing the technical basis and effective means for the monitoring and warning of coal mine gas outburst disaster.