一、概况近年来,矿井井巷施工中,推广使用了光爆锚喷先进技术,这对于加快施工进度、降低施工成本、减轻工人体力劳动、保证工程质量均起了重要作用。但是,在喷射砼施工中,尚存在着粉尘浓度大、回弹率高的缺欠。这不仅严重地危害着工人的身体健 I. Overview In recent years, mine shaft and gateway construction, the promotion of the use of light blast anchor spraying advanced technology, which accelerate the construction progress, reduce construction costs, reduce labor manual workers, to ensure the quality of the project played an important role. However, spraycrete construction, there is still a large concentration of dust, high resilience shortcomings. This not only seriously endangers the health of workers