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为研究煤与瓦斯突出后整个矿井发生的灾变过程,基于有源通风网络理论和数值仿真技术,利用TF1M3D矿井灾变通风仿真系统软件,对2004年郑煤集团大平煤矿“10·20”煤与瓦斯突出事故进行仿真推演。模拟得到,突出高峰期,以突出点为中心,东翼区域发生大规模逆流,逆流瓦斯渗透通过11轨道石门中的风门进入西大巷;在突出衰退后,逆流消失,进入西大巷的瓦斯随进风流进入13,15采区;同样因风门的限流,11轨道石门中出现瓦斯滞留,当架线电机车经过交汇点时引发瓦斯爆炸。推演结果与实际情况相吻合。研究表明,瓦斯突出灾变时期,防止瓦斯滞留是预防二次爆炸事故的关键;积极推广使用远程控制的自动风门,用它进行调控,能最大限度降低灾害损失。
In order to study the catastrophic process of coal and gas outburst in the entire mine, based on the theory of active ventilation network and numerical simulation technology, the paper uses the TF1M3D Mine Disaster Ventilation Simulation System software to analyze the “10 · 20” coal of Daping Coal Mine Simulation and deduction with gas outburst accident. Simulation results showed that during the peak period, a large-scale countercurrent occurred in the eastern wing with the salient point as the center. The gas inflow through the 11-track Shihmen entered the western roadway. After the recession was highlighted, the countercurrent disappeared and gas entering the western roadway As the wind into the 13,15 mining area; the same throttle due to the current limit, 11 track Shimen appeared gas retention, when the overhead line locomotive caused by gas explosion point. The result of the deduction coincides with the actual situation. Studies have shown that the prevention of gas retention during the catastrophic catastrophic period of gas outburst is the key to preventing the second explosion. It is actively promoted the use of remote controlled automatic wind gate to regulate and minimize the disaster losses.