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减少矿井漏风,提高矿井的有效风量率是通风管理工作中重要内容之一。矿井内部的漏风,主要发生在安设通风构筑物的地点,而在这些地点中,漏风最严重的是风门,因风门经常地开启与关闭,而且两边的压差很大,如有少许不严漏风就会很大,使矿井的有效风量率大大地降低。为了提高风门关闭后的严密性,有必要借助风门的自重使之自行关闭。为此安设风门时应使风门顺风流的流动方向倾斜一个角度α,α一般在80°～85°之间。在安设风门时,为保证风门顺风流倾斜角在80°～85°的范围内,根据现场在安装时
Reduce mine air leakage and improve the effective air volume of the mine ventilation management is an important part of the work. Leakage inside the mine occurs mainly at the site where ventilation structures are installed. In these locations, the most serious air leakage is the damper, which is often opened and closed due to the damper, and the pressure difference between the two sides is very large. It will be great, so that the effective air flow rate mine greatly reduced. In order to improve the tightness of the damper after closing, it is necessary to make use of the self-weight of the damper to close it. For this purpose, the damper should be arranged so that the windward flow direction of the damper is inclined at an angle α, which is generally between 80 ° and 85 °. When installing the damper, in order to ensure that the windward inclination of the damper is in the range of 80 ° ~ 85 °,