煤矿粉尘的基本概念--qsf999的安全生产小屋

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煤矿粉尘的基本概念 | 2011-9-10 10:35:00

煤矿粉尘的基本概念

1．煤矿粉尘的概念
　　煤矿生产过程中随着煤、岩石被破碎而产生的煤、岩石和其他物质的细微颗粒总称为煤矿粉尘。有的情况下也被称为生产性粉尘或矿尘。
　　按其组成成分，煤矿粉尘主要分为煤尘和岩尘。
　2．粉尘防治的主要概念
　(1)全尘：也被称为总粉尘，是指用一般敞口采样器采集到一定时间内悬浮在空气中的全部固体微粒。
　　(2)呼吸性粉尘：能被吸入人体肺部并滞留于肺泡区的浮游粉尘。其空气动力直径小于7．07 mm的极细微粉尘，是引起尘肺病的主要粉尘。
　　(3)浮游粉尘：能在矿井空气中悬浮的粉尘，也称浮尘。
　　(4)沉积粉尘：矿井内，因自重而降落，沉积在巷道顶、帮、底板和物体上的粉尘。也称为落尘或积尘。
　　(5)粉尘浓度：单位体积空气中所含粉尘的质量(mg／m3)或颗粒数(粒／cm3)。
　　(6)粉尘粒度分布：又称为粉尘分散度。在含尘空气中，各种不同粒径粉尘的质量或颗粒数占粉尘总质量或总颗粒数的百分比。
　　(7)游离二氧化硅：岩石或矿物中没有同金属或金属氧化物结合的二氧化硅。
　　(8)尘肺病：由于长期吸入大量细微粉尘而引起的以肺组织纤维化为主的职业病。
　　(9)矽肺病：也称为硅肺病，由于长期吸人大量含结晶型游离二氧化硅的岩尘所引起的尘肺病。
　　(10)煤肺病：由于长期吸人煤尘所引起的尘肺病。
　　(11)煤矿肺病：也称为煤硅肺病，由于长期吸入煤尘及含游离二氧化硅的岩尘所引起的尘肺病。
　　(12)气溶胶：固体或液体微小颗粒分散于空气中的分散体系称为气溶胶。煤矿粉尘分散在矿井空气中即所谓的含尘空气就构成为一个分散体系，空气是分散介质，粉尘是分散相。
　　(13)煤尘爆炸：悬浮在空气中的煤尘，在一定条件下，遇高温热源而发生剧烈氧化反应，并伴有高温和压力上升、对周围环境产生巨大破坏的现象。
　　(14)煤矿防尘：降低煤矿内粉尘浓度及防止煤尘爆炸的技术。

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Re:在漫画中识别身边的违章 | 2017-2-20 16:08:27

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Re:在漫画中识别身边的违章 | 2017-2-18 18:45:49

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By:uctwy(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复

Re:在漫画中识别身边的违章 | 2016-10-8 14:44:07

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By:zdhdh(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复

原创 | 2016-9-30 16:03:27

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By:原创(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复

原创 | 2016-9-28 21:20:15

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By:原创(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复

原创 | 2016-9-6 21:45:48

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