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针对实际采空区中的气体流动的复杂情况,进行适当简化,建立了三维采空区内混合气体非线性渗流方程和瓦斯的扩散方程的数学模型,采用有限容积法对其离散,为实现采空区三维稳态流场及瓦斯浓度场的计算机模拟提供理论基础。
In view of the complicated situation of gas flow in the actual goaf, the mathematical model of the nonlinear seepage equation of mixed gas and gas diffusion equation in the three-dimensional goaf is established. The finite volume method is used to discrete the mathematical model. Space-based three-dimensional steady-state flow field and gas concentration field computer simulation provides the theoretical basis.