为了保证采掘工作面达到所需要的风量和良好的通风条件,在井下巷道中就得设置许多通风建筑物进行风流控制与管理。风门就是为了行人与矿车通过时,隔断与控制风流的一种通风建筑物。每个矿井,根据井田范围的大小与通风系统的繁简。常设有几十道、甚至上百道风门。风门质量的好坏,直接影响着风量的有效供给与漏风的大小,特別是对有自燃危险矿井,漏风常会 In order to ensure that the working face to achieve the required air volume and good ventilation conditions in the underground tunnel have to set up many ventilation buildings for wind flow control and management. The damper is a ventilated building that divides and controls the flow of wind for the passage of pedestrians and tubs. Each mine, according to the size of the minefield and the ventilation system of the simplified. There are often dozens, even hundreds of throttle. Valve quality is good or bad, a direct impact on the effective supply of air volume and the size of air leakage, especially for spontaneous combustion of dangerous mines, air leakage often