煤和瓦斯突出前大多数都有预兆，归纳起来分有声预兆和无声预兆。--杨远锋的博客

煤和瓦斯突出前大多数都有预兆，归纳起来分有声预兆和无声预兆。

[ 2011-1-9 9:20:00 | By: 杨远锋 ]

煤是可燃物质，当它破碎成细小颗粒后，表面积大大增加，氧化能力显著增强。受热时单位时间内能够吸收更多的热量，在较低的温度（300～400℃）时，就能放出大量的可燃性气体味p挥发分），聚集于尘粒的周围。这类可燃性气体一经与空气混合便在高温作用下吸收能量，形成一定数量的活化中心。如果这时氧化反应放出的热量能够有效地传播给附近的煤尘，这些煤尘也就迅速变热分解，跟着燃烧起来。此种过程连续不断地进行，氧化反应越来越快，温度越来越高，活化中心越来越多，达到一定程度时，便能发展为剧烈的爆炸。

    煤尘爆炸必须具备下列三个条件：
    （1）煤尘本身具有爆炸性。煤尘的爆炸性与挥发分含量有关，同样情况下，挥发分含量高的煤，爆炸性强。
    （2）煤尘必须悬浮于空气中并达到一定浓度。根据试验，我国煤尘的爆炸下限浓度：褐煤为45～55克／立方米；烟煤为110～335克／立方米。上限浓度一般为1500～2000克／立方米。
    （3）有一个能点燃煤尘爆炸的高温热源。其引燃温度变化范围较大，一般为700～800℃，有时达1100℃。

阅读全文 | 回复(14) | 引用通告 | 编辑

上一篇：以人为本树立安全文化理念不断提高职工的安全文化修养
下一篇：煤和瓦斯突出有预兆吗？

原创

[ 2016-9-6 17:20:06 | By: 原创(游客) ]

http://rywwx.lofter.com/post/1e5a844e_c3c73ae http://rywwx.lofter.com/post/1e5a844e_c3c73ad http://rywwx.lofter.com/post/1e5a844e_c3c73ac http://rywwx.lofter.com/post/1e5a844e_c3c73ab http://rywwx.lofter.com/post/1e5a844e_c3c73aa http://rywwx.lofter.com/post/1e5a844e_c3c73a9 http://rywwx.lofter.com/post/1e5a844e_c3c73a8 http://rywwx.lofter.com/post/1e5a844e_c3c73a7 http://rywwx.lofter.com/post/1e5a844e_c3c73a6 http://rywwx.lofter.com/post/1e5a844e_c3c73a5

个人主页 | 引用 | 返回 | 删除 | 回复

原创

[ 2016-9-28 16:54:21 | By: 原创(游客) ]

http://bjseoywj.lofter.com/post/1e66bf3e_c7074ab http://seogsywj.lofter.com/post/1e634756_c6de1c5 http://wztgywj.lofter.com/post/1e65f473_c6ed348 http://ywjseo.lofter.com/post/1e634752_c651971 http://seogsywj.lofter.com/post/1e634756_c6df4ad http://wztgywj.lofter.com/post/1e65f473_c6ea0a6 http://wztgywj.lofter.com/post/1e65f473_c6ea18e http://wztgywj.lofter.com/post/1e65f473_c6f0c28 http://ywjseo.lofter.com/post/1e634752_c6510ab http://seogsywj.lofter.com/post/1e634756_c6dea7e

个人主页 | 引用 | 返回 | 删除 | 回复

原创

[ 2016-9-30 11:31:12 | By: 原创(游客) ]

http://rywywj.lofter.com/post/1e6a80c3_c822cda http://rywydx.lofter.com/post/1e6a68e3_c80c779 http://rywywj.lofter.com/post/1e6a80c3_c823de9 http://rywkdks.lofter.com/post/1e698063_c7f6018 http://rywkdks.lofter.com/post/1e698063_c7f90b1 http://rywydx.lofter.com/post/1e6a68e3_c80cf42 http://rywkdks.lofter.com/post/1e698063_c7f7366 http://rywywj.lofter.com/post/1e6a80c3_c824761 http://rywkdks.lofter.com/post/1e698063_c7eb584 http://rywywj.lofter.com/post/1e6a80c3_c8028b8

个人主页 | 引用 | 返回 | 删除 | 回复

Re:在漫画中识别身边的违章

[ 2016-10-14 14:12:46 | By: utimp(游客) ]

http://www.iciba.com/%E5%B8%9D%E5%9B%BD%E5%A8%B1%E4%B9%90%E8%BF%94%E7%82%B9%E5%A4%9A%E5%B0%91-%E3%80%90Q952499%E3%80%91
http://www.iciba.com/%E5%B8%9D%E5%9B%BD%E5%A8%B1%E4%B9%90%E5%A5%96%E9%87%91%E9%AB%98%E5%90%97-%E3%80%90Q952499%E3%80%91
http://www.iciba.com/%E5%B8%9D%E5%9B%BD%E5%A8%B1%E4%B9%90%E5%B9%B3%E5%8F%B0%E5%A5%96%E9%87%91%E9%AB%98%E5%90%97-%E3%80%90Q952499%E3%80%91
http://www.iciba.com/%E5%B8%9D%E5%9B%BD%E5%A8%B1%E4%B9%90%E6%8F%90%E6%AC%BE%E5%BF%AB%E5%90%97-%E3%80%90Q952499%E3%80%91
http://www.iciba.com/%E5%B8%9D%E5%9B%BD%E5%A8%B1%E4%B9%90%E5%B9%B3%E5%8F%B0%E6%8F%90%E6%AC%BE%E5%BF%AB%E5%90%97-%E3%80%90Q952499%E3%80%91
http://www.iciba.com/%E5%B8%9D%E5%9B%BD%E5%A8%B1%E4%B9%90%E6%98%AF%E9%AA%97%E4%BA%BA%E7%9A%84%E5%90%97-%E3%80%90Q952499%E3%80%91
http://www.iciba.com/%E5%B8%9D%E5%9B%BD%E5%A8%B1%E4%B9%90%E5%B9%B3%E5%8F%B0%E6%98%AF%E9%AA%97%E4%BA%BA%E7%9A%84%E5%90%97-%E3%80%90Q952499%E3%80%91
http://www.iciba.com/%E5%B8%9D%E5%9B%BD%E5%A8%B1%E4%B9%90%E9%9D%A0%E8%B0%B1%E5%90%97-%E3%80%90Q952499%E3%80%91
http://www.iciba.com/%E5%B8%9D%E5%9B%BD%E5%A8%B1%E4%B9%90%E5%B9%B3%E5%8F%B0%E9%9D%A0%E8%B0%B1%E5%90%97-%E3%80%90Q952499%E3%80%91
http://www.iciba.com/%E5%B8%9D%E5%9B%BD%E5%A8%B1%E4%B9%90%E4%BF%A1%E8%AA%89%E6%80%8E%E4%B9%88%E6%A0%B7-%E3%80%90Q952499%E3%80%91

个人主页 | 引用 | 返回 | 删除 | 回复

Re:在漫画中识别身边的违章

[ 2016-10-14 18:55:28 | By: uwaei(游客) ]

http://www.esafety.cn/blog/wll/34024/archives/2013/127590.html
http://www.jxedt.com/wen/qita/3170636168164999222.html
http://www.jxedt.com/wen/kaoshi/3170636168164999222.html
http://www.jxedt.com/wen/qita/3170636174772535378.html
http://www.jxedt.com/wen/kaoshi/3170636174772535378.html
http://www.jxedt.com/wen/qita/3170636179907739676.html
http://www.jxedt.com/wen/kaoshi/3170636179907739676.html
http://vz1pxfj7n5z3.yupoo.com/
http://www.jxedt.com/wen/qita/3170636187493335094.html
http://www.jxedt.com/wen/kaoshi/3170636187493335094.html

个人主页 | 引用 | 返回 | 删除 | 回复

Re:在漫画中识别身边的违章

[ 2016-10-21 15:12:42 | By: bdhce(游客) ]

http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13736849?qi=74778
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13736850?mou=84631
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13736851?du=88705
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13736852?ni=92402
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13736855?tai=82489
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13736859?wei=35918
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13736870?xiang=29694
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13736877?yong=40178
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13736874?si=95173
http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=13736880?ge=35712

个人主页 | 引用 | 返回 | 删除 | 回复

Re:在漫画中识别身边的违章

[ 2016-10-22 13:51:18 | By: kzegj(游客) ]

http://www.anqiu123.com/store-1787/document-id-446584.html
http://www.esafety.cn/blog/u/1800/archives/2012/120430.html
http://www.pinterest.com/j3zd7p57jnvz/
http://www.anqiu123.com/store-1787/document-id-446586.html
http://www.esafety.cn/blog/u/9490/archives/2013/128489.html
http://www.esafety.cn/blog/wll/66030/archives/2010/102866.html
http://www.esafety.cn/blog/wll/85686/archives/2010/105009.html
http://www.esafety.cn/blog/u/3012/archives/2011/108529.html
http://www.anqiu123.com/store-1787/document-id-446588.html
http://www.esafety.cn/blog/wll/73171/archives/2011/118326.html

个人主页 | 引用 | 返回 | 删除 | 回复

Re:在漫画中识别身边的违章

[ 2016-10-23 14:48:15 | By: oegkn(游客) ]

http://www.anqiu123.com/store-1787/document-id-430699.html
http://www.anqiu123.com/store-1787/document-id-430700.html
http://www.anqiu123.com/store-1787/document-id-430702.html
http://www.anqiu123.com/store-1787/document-id-430703.html
http://www.anqiu123.com/store-1787/document-id-430704.html
http://www.anqiu123.com/store-1787/document-id-430706.html
http://www.anqiu123.com/store-1787/document-id-430708.html
http://www.anqiu123.com/store-1787/document-id-430709.html
http://www.anqiu123.com/store-1787/document-id-430711.html
http://www.anqiu123.com/store-1787/document-id-430712.html

个人主页 | 引用 | 返回 | 删除 | 回复

Re:在漫画中识别身边的违章

[ 2016-10-23 15:16:26 | By: ynsux(游客) ]

http://www.anqiu123.com/store-1787/document-id-488507.html
http://www.anqiu123.com/store-1787/document-id-488511.html
http://www.anqiu123.com/store-1787/document-id-488516.html
http://www.anqiu123.com/store-1787/document-id-488520.html
http://www.anqiu123.com/store-1787/document-id-488523.html
http://www.anqiu123.com/store-1787/document-id-488529.html
http://www.anqiu123.com/store-1787/document-id-488532.html
http://www.anqiu123.com/store-1787/document-id-488535.html
http://www.anqiu123.com/store-1787/document-id-488538.html
http://www.anqiu123.com/store-1787/document-id-488541.html

个人主页 | 引用 | 返回 | 删除 | 回复

Re:在漫画中识别身边的违章

[ 2017-3-2 22:55:26 | By: vzdhl(游客) ]

http://slide.games.sina.com.cn/search.php?k=%B5%DB%D2%BB%B7%D6%B7%D6%B2%CA%D4%F5%C3%B4%CD%E6%2B44686%28Q%29
http://slide.games.sina.com.cn/search.php?k=%B5%DB%D2%BB%D3%E9%C0%D6%B7%D6%B7%D6%B2%CA%B9%D9%CD%F8%2B44686%28Q%29
http://slide.games.sina.com.cn/search.php?k=%B7%D6%B7%D6%B2%CA%D1%A1%BA%C5%B9%AB%CA%BD%2B44686%28Q%29
http://slide.games.sina.com.cn/search.php?k=%B7%D6%B7%D6%B2%CA%CD%E6%D7%E960%2B44686%28Q%29
http://slide.games.sina.com.cn/search.php?k=%CF%BA%C3%D7%B7%D6%B7%D6%B2%CA%2B44686%28Q%29
http://slide.games.sina.com.cn/search.php?k=2016%B7%D6%B7%D6%B2%CA%BF%AA%BD%B1%2B44686%28Q%29
http://slide.games.sina.com.cn/search.php?k=%B7%D6%B7%D6%B2%CA%BA%F3%C8%FD%C9%B1%BA%C5%B9%AB%CA%BD%2B44686%28Q%29
http://slide.games.sina.com.cn/search.php?k=2016%B7%D6%B7%D6%B2%CA%BA%F3%D2%BB%C9%B1%BA%C5%2B44686%28Q%29
http://slide.games.sina.com.cn/search.php?k=%B7%D6%B7%D6%B2%CA%BB%E1%D7%F7%B1%D7%C2%F0%2B44686%28Q%29
http://slide.games.sina.com.cn/search.php?k=%CA%B1%CA%B1%B2%CA%B7%D6%B7%D6%B2%CA%BD%B1%BD%F0%B8%DF%2B44686%28Q%29

个人主页 | 引用 | 返回 | 删除 | 回复

Re:在漫画中识别身边的违章

[ 2017-3-4 15:08:53 | By: nlbeg(游客) ]

http://www.sxyxqk.com/plus/view.php?aid=66919
http://www.sxyxqk.com/plus/view.php?aid=66921
http://www.sxyxqk.com/plus/view.php?aid=66922
http://www.tdbzy.com/plus/view.php?aid=291602
http://www.annv.net/plus/view.php?aid=10405
http://www.annv.net/plus/view.php?aid=10406
http://www.sxyxqk.com/plus/view.php?aid=66923
http://www.sxyxqk.com/plus/view.php?aid=66924
http://www.annv.net/plus/view.php?aid=10407
http://www.annv.net/plus/view.php?aid=10408

个人主页 | 引用 | 返回 | 删除 | 回复

发表评论：