摘要
对平沟煤矿综采工作面粉尘分散度进行现场采样和试验分析,得出了综采工作面粉尘分散度的一些结论。在靠近尘源处粉尘粒径比较平均,这时大颗粒粉尘所占比重较大,靠近底板处以大颗粒粒径的粉尘为主。随着与尘源距离逐渐增大粉尘的粒径趋于稳定,逐渐以对人体伤害较严重的微细颗粒为主,说明微细颗粒不易沉降,在趋于稳定后粒径小于5μm的粉尘颗粒达到90%以上。
Based on field measurement and analysis of dust dispersity in Pinggou coal mine fully mechanized coal face, conclusions on dust dispersity was obtained. Near the dust source the dust size are average, large particle dust accounts for large percentage. Near the floor composed mainly of large particle. With the increase of the distance with the dust source the dust size are tended to be stable, mainly with the fine particles which axe hard harm to human body. It is show that fine particles are hard to settlement, when it is stable the dust size which less than 5μm are reached 90%.
出处
《煤炭技术》
CAS
北大核心
2009年第4期168-169,共2页
Coal Technology
关键词
综采工作面
粉尘
分散度
fully mechanized coal face
dust
dust dispersity
