采 煤工艺的进行总是伴随着粉尘的产生。煤矿大功率采煤机的应用大大提高了工作面的回采速度 ,但采煤过程中产生的粉尘也相应增加 ,给降尘工作带来了困难 (采煤机割煤时产生的粉尘浓度就高达3000～5000mg/m3之多 ,产尘量占整个工作面产尘量的60 %左右 )。高浓度的粉尘不仅严重 Coal mining process is always accompanied by dust generation. The application of high-power coal shearer in coal mines greatly improves the recovery rate of working face, but the dust generated in the coal mining process also increases accordingly, which brings difficulties to the dust reduction work (the dust concentration produced when shearer cuts coal is as high as 3000 ~ 5000mg / m3 as much, the amount of dust production accounted for 60% of the entire face of dust production). High concentration of dust is not only serious