The methane near a tunnelling face seriously affects production safety in coal mines. A model considering methane seepage, adsorption, desorption and coal damage processes was established in this research. The open field operation and manipulation (OpenFOAM) solver was compiled to numerically solve the established model. The model is validated against data published in a previous theoretical study. The solver was used to investigate the effect of different parameters on methane emission regularity. This solver demonstrates that the effects of the original stress, coal cohesion and coal internal friction angle on the methane emission rate are limited, but their effects on the width of the fractured zone and effective stress are great. The effects of the initial methane pressure and coal adsorption parameters on the methane emission rate are also notable, but their effects on the width of the fractured zone and effective stress are limited.

中文翻译：

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煤矿掘进工作面附近瓦斯行为的OpenFOAM求解器及其应用

掘进工作面附近的瓦斯严重影响煤矿安全生产。本研究建立了考虑甲烷渗流、吸附、解吸和煤损过程的模型。编译开放场操作和操纵（OpenFOAM）求解器对建立的模型进行数值求解。该模型已根据先前理论研究中公布的数据进行了验证。该求解器用于研究不同参数对甲烷排放规律的影响。该求解器表明原始应力、煤的凝聚力和煤的内摩擦角对瓦斯排放率的影响是有限的，但它们对断裂带宽度和有效应力的影响很大。