Tóm tắt:

Air leakage is one of the factors influencing the efficiency of mine ventilation. The phenomenon of air leakage occurs in ventilation installations, especially in ventilation doors. Air leakage depletes the stability of the ventilation network, and also increases the energy consumption for ventilation. Overcoming the leakage of airflow through ventilation doors is an important task, since the decision of this determines the efficiency of ventilation system. The article describes the tasks of determining the relationship between the resistance of the ventilation door and air leakage with the cost of building a door. The results of this study allow us to determine the appropriate costs to ensure the effective use of ventilation doors for each specific condition of a coal mine in Quảng Ninh basin.