和善矿自然风压影响通风系统的原因及对策

Analysis on Reason and Countermeasure of Negative Impact Caused by Natural Wind Pressure upon Ventilation System in Heshan Coalmine

针对和善煤矿冬季昼夜因温差大造成自然风压影响矿井通风系统的实际情况,采取相应的增阻法,缩小进回风井口温差、调整风叶角度或转速等,确保了矿井基建期间的通风安全。

Due to large temperature difference between daytime and night in winter and the natural wind pressure fluctuation in HeShan coalmine, the ventilation system often operated in the state of instability, by reducing the temperature difference between the outlet and the entrance, adjusting the fan blade angle or speed, increasing the corresponding wind resistance, the safety and mine ventilation during construction ensured.