【煤尘的来源】在煤矿生产过程中,包括井下作业和露天作业两种,都能产生很多煤尘,煤尘的产生与作业方式以及工序有关。其中以井下凿岩和采煤工序产生的煤尘最多,其机械化程度越高,煤尘也越多,如在没有防尘措施的生产条件下,干式风钻凿岩时,工作面煤尘浓度可高达800～1400mg/M~3,爆破后其爆 【Origin of coal dust】 In the process of coal mine production, including underground operation and open-air operation, both can produce a lot of coal dust, and the generation of coal dust is related to the operating mode and process. Among them, coal mine dust generated by underground rock drilling and coal mining processes is the most, and the higher the degree of mechanization is, the more coal dust is. For example, in the production condition without dust prevention measures, Can be as high as 800 ~ 1400mg / M ~ 3, burst after the explosion