通过假设与简化，建立了采煤工作面粉尘爆炸率与采煤机滚筒设计参数间关系的数学模型。
A mathematical model of relation between dust explosion rate on a coal face and design parameters of a shearer drum is set up by supposing and simplification in the paper.
试验表明，采用高效除尘器对巷道凿岩工作面进行就地净化循环通风，能使工作面粉尘质量浓度符合国家工业卫生标准。
The test results show that dust concentrations in tunneling working face can be satisfied with the national health standard by a high efficient deduster.
煤矿开采、 水泥生产、面粉加工、制药等行业长期受到粉尘污染的困扰。
There is often dust pollution in environments of coal mining, cement production, flour processing and pharmaceutical factory etc.
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