西伯利亚的许多矿山,在采用高威力炸药进行爆破后,使独头巷道的工作面以每循环2.0～2.5米的速度向前掘进,因此,需要创造更良好的通风条件。但是,现行的规程仍要求风筒末端距工作面不大于10米,因而,通风设备经常受到冲击波和爆破飞石的破坏。解决办法是广泛使用新研制的引射器, Many of Siberia’s mines, after being blasted with high-powered explosives, have moved the face of a single-headed tunnel forward at a speed of 2.0 to 2.5 meters per cycle and therefore needed to create better ventilation. However, the current regulations still require that the end of the hair drier be no more than 10 meters away from the work surface, and as a result, the ventilator is often damaged by shock waves and blasting rock. The solution is to widely use the newly developed ejector,