根据紊流射流理论及气幕隔尘原理,分析了不同气幕布置形式的隔尘效果。横向气幕和斜向气幕由于影响工作面风流的正常流动,使采煤机司机的工作区处在低压区,造成含尘气流向司机工作区回流,隔尘效果差;斜向气幕随气幕与工作面走向的夹角的减小,隔尘效果逐渐增加;纵向气幕隔尘效果较好,且通过调整纵向气幕射流喷射角度及其距工作面煤壁的距离,可使纵向气幕的隔尘效果进一步增加。 According to the theory of turbulent jet and the principle of air curtain dusting, the effect of air curtain with different air curtain arrangement is analyzed. Horizontal air curtain and oblique air curtain affect the normal flow of face flow, so that the shearer driver’s work area is in the low-pressure area, resulting in the flow of dust-containing gas to the driver’s work area back to the poor dust effect; oblique air curtain with The angle between the air curtain and the working face decreases, and the dust separating effect gradually increases. The dust shielding effect of the longitudinal air curtain is better, and by adjusting the jet angle of the longitudinal air curtain jet and the distance from the coal wall of the working face, Air curtain dust effect further increased.