一、前言随着锚喷技术的广泛使用,几年来,锚喷机具的研究也取得了一定的进展,但与锚喷支护技术的迅速发展相比,是很不相称的,特别是混凝土喷射机工作时产生的大量粉尘和回弹,既严重危害了矿工的身体健康,同时,也造成了大量材料的浪费。有材料表明,目前各地采用干式喷浆,大多数喷浆机工作时,巷道中的粉尘浓度均在100mg/m~3以上,回弹率30％以上,有的地方粉尘浓度竟高达400～500mg/m~3,回弹率50％以上,这种情况严重地阻碍了锚喷支护技术的进一步推广和提高。几年来,国内有关单位为降低干(潮)喷的粉尘,采用了一些综合措施,其中包括整体防护措施:除尘器;个体防护措施:1.压 I. Introduction With the widespread use of anchor spray technology, research on anchor spray equipment has made some progress in recent years. However, compared with the rapid development of anchor spray support technology, it is very disproportionate. In particular, The large amount of dust and rebound produced by the machine work not only endangered the health of the miners, but also caused a lot of waste of materials. Some materials show that at present all over the use of dry shotcrete, most shotcrete machine work, the dust concentration in the roadway are above 100mg / m ~ 3, the rebound rate of 30% or more, in some places the concentration of dust was as high as 400 ~ 500mg / m ~ 3, rebound rate of 50% or more, this situation seriously hampered the anchor spray support technology to further promote and improve. In recent years, relevant domestic units have adopted a number of comprehensive measures to reduce dry (tide) spray dust, including overall protection measures: dust collector; personal protective measures: 1. Pressure