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根据采空区瓦斯分布及流动规律理论建立瓦斯流动数学模型,模拟研究采空区不同位置瓦斯浓度分布情况,调整风量、埋管深度和埋管高度等参数模拟分析。结果表明:改变风量对于上隅角瓦斯浓度变化影响不显著,得出不同埋管长度和埋管高度与上隅角瓦斯浓度的函数关系。
According to the theory of gas distribution and flow in goaf, a mathematical model of gas flow was established to simulate the distribution of gas concentration at different positions in mined-out area and adjust the parameters of wind flow, depth of buried pipe and height of buried pipe. The results show that the change of air volume has no significant effect on the change of gas concentration in the upper corner, and the relationship between the length of buried pipe and the height of buried pipe and the gas concentration in the upper corner is obtained.