矿井重要区域风流紊乱机理数值模拟研究

Numerical Simulation Study on Airflow Disturbance Mechanism in Important Area of Mine

矿井通风涉及安全,根据矿井现场实测,风流紊乱与温度相关,在深秋、冬季和初春等温度较低的季节,风流容易发生紊乱。通过对矿井重要区域的井筒数值模拟发现,冷热风流混合会改变风流的均一性,在较浅部位的井筒风速较为杂乱。该数值模拟研究结论,在一定程度上解释了风流产生紊乱的原因,给矿井通风管理提供了理论性指导。

The mine ventilation is related to safety. According to the field measurement, the wind flow disorder is related to the temperature,and the wind flow is easily disturbed in the seasons of lower temperature in late autumn, winter and early spring. Through the numerical simulation of the wellbore in important areas with the mine, it is found that the mixing cold and hot air will change the uniformity of the wind flow,and the wind speed in the shallow part of the shaft is more and more disorderly. The conclusion of the numerical simulation, to a certain extent,explains the cause of the disturbance of wind flow, and provides theoretical guidance for mine ventilation management.