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中文摘要：
采用数值模拟的方法对煤与瓦斯突出后对防突风门的破坏特性进行研究，阐明突出时作用在门上的反射超压，给出其计算式；并以相似模拟实验所获得的风门压力数据为基础，运用ANSYS软件对防突风门的破坏特性进行了模拟，模拟结果表明：门垛最薄弱的地方就是风筒所在位置；同时表明，最先到达防突风门的冲击波压力并不呈现最大值，由于反射超压作用的，几百毫秒后防突风门所受压力会突然上升达到最大值，这与实验结果相近。
英文摘要：
We explore the destruction of outburst prevention air doors by coal and gas outbursts using numerical simulation. The reflective overpressure when an outburst acts on doors is elucidated, and its formula is obtained. The destruction of outburst prevention wind doors by coal and gas outburst are simulated using ANSYS software based on data of wind door pressure obtained by similarity simulation experiment. The simulation results show that the weakest place of gate posts is where the wind tube is. Simulation results also show the first shock wave pressure that acts on an outburst prevention wind door is not the maximum one. Due to the effect of reflected overpressure, the outburst prevention wind door pressure will reach the maximum in several milliseconds. This finding is similar to the experiment result.
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