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根据井巷风流一维非稳定流动的微分方程和巷道内风流非稳定流动的数学模型,基于矿内空气动力学和矿井通风网络理论,建立了单风机矿井通风网络非稳定流动的数学模型。应用刚体理论和有限差分法,对模型进行求解,并利用MATLAB模拟了风机切断电源后分支风量的变化,得到了分支风量随时间变化的曲线。
According to the one-dimensional unsteady flow differential equation and the unsteady flow mathematical model in tunnel, a mathematical model of unsteady flow in single-fan mine ventilation network is established based on the theory of mine aerodynamics and mine ventilation network. The rigid body theory and the finite difference method are used to solve the model. The variation of the branch air volume after the fan is cut off is simulated by MATLAB, and the curve of the branch air volume with time is obtained.