自然风压对矿井通风网络稳定性影响的研究

Study on influence of mine natural ventilation pressure to stability of mine ventilation network

由于井巷空气的密度不同会产生自然风压。自然风压的存在,将会导致矿井通风网络的参数发生变化,进而对矿井的安全生产产生影响。因此,定量分析自然风压对矿井通风网络的影响,对矿井的安全生产是十分必要的。文章运用热力学、流体力学及通风网络的有关理论,建立自然风压对通风网络影响的相关数学模型,定量分析自然风压、通风网络风阻及风量之间的关系,并以此作为通风系统安全性评价、风量调节以及通风系统管理的理论依据。

A natural mine ventilation pressure would be occurred due to the difference of the air density in the mine. The existence of the natural ventilation pressure would cause the parameters （such as the air flow, pressure and air direction） of the mine ventilation network to be varied. Thus the variation would be affected to the mine safety production. Therefore, it is necessary to quantitatively analyze the natural ventilation pressure affected to the mine ventilation networks and to the mine safety production. With the mathematic model on the natural ventilation pressure affected to the mine ventilation network established with the thermodynamics, fluid mechanics and quantitative relationship between natural ventilation pressure and parameters of the mine ventilation network theory, the paper quantitatively analyzed the relationship between the natural ventilation pressure, ventilation network and ventilation quantity, which could be the theoretical references to the safety assessment of the ventilation system, ventilation quantity adjustment and ventilation system management.