Research on the Evolution Law of Natural Wind Pressure and Affected Areas in Yongming Coal Mine

The natural wind pressure in mines often has large seasonal fluctuations and obvious effects on the ventilation system, which is an important factor for the stability of the ventilation system, safe production and high productivity. In order to effectively manage and utilize the natural wind pressure in mines, this paper takes Yongming Mine as an example, the on-site measurement method is used to thoroughly investigate the law of the development of natural wind pressure, and through a combination of quantitative data analysis and qualitative evaluation methods, the extent of the influence area of natural wind pressure is determined. The results of the study show that: The annual change of natural wind pressure in Yongming Mine has a sinusoidal pattern and is in line with the trend of mechanical ventilation, decreasing in summer and peaking in winter; the areas of influence of natural wind pressure are concentrated in the main and auxiliary shaft area, near the ventilation tunnel, coal conveyor corridor 3 - west of the mine, the south wing conveyor corridor in the area of slab 33, coal conveyor corridor 5 - west of the mine and other areas.