The underground mine dust is one of the biggest factors of the safety problems in the underground production. Workers engaged in the working environment of mining and dust for long a time are easy to cause pneumoconiosis. The workers are easy to cause accidents in the operation, because the sight is blocked by the dust. The biggest detriment is that coal dust is easy to cause coal dust explosion accidents under certain conditions in the mines which has the dust with explosion hazard. It brings great threats to the mine safety production.%矿尘始终是困扰井下安全生产的最大因素之一。长期从事采掘和粉尘作业环境的职工，易引起尘肺病，在高度粉尘作业场所工作的职工，视线易受阻挡，操作中易造成人身事故。其最大危害在于煤尘具有爆炸危险的矿井，煤尘在一定的条件下易发生煤尘爆炸事故，给矿井安全生产带来很大威胁。
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