井下灭火都有哪些方法？--qsf999的安全生产小屋

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井下灭火都有哪些方法？ | 2011-8-3 9:30:00

井下灭火都有哪些方法？

   （1）直接灭火法
    1）用水、砂子灭火；
    2）灭火器灭火。我国目前使用的灭火器有化学灭火器。干粉灭火器和灭火手雷等。
    （2）隔绝灭火法
    当井下火灾不能用直接灭火法扑灭时，必须迅速封闭火区，切断氧气供给。经过相当时间以后，由于火区氧气消耗殆尽，火灾最终熄灭。封闭火区的工作必须由矿总工程师负责领导。为了有效地切断氧气供给，应在通往火区的所有巷道内构筑防火墙，并且堵住一切可能的漏风通道。封闭火区时，在确保安全的前提下应尽量缩小封闭火区的范围，并必须指定专人检查瓦斯、氧气、一氧化碳，煤尘以及其它有害气体和风流的变化，采取防止瓦斯、煤尘爆炸和人员中毒的安全措施。防火墙的质量和技术标准由矿务局统一规定。
    （3）联合灭火法
    联合灭火法，即在封闭火区后再辅以其它灭火措施，如灌浆或灌惰性气体和调节风压法等。火区范围大，火源位置不太确切时，应对整个火区灌注大量泥浆。火区范围小且火源位置已准确掌握时，就可在火源附近打钻注浆。用情性气体灭火，就是向火区输送二氧化碳、氮气或炉烟等惰性气体，以降低火区内的氧气含量，增加密闭区的气压，减少漏风，从而加速火灾的熄灭。调节风压法灭火，其实质是调节火区进、回风侧密闭之间的风压差,减少向火区的漏风，加速灭火。

By:qsf999 | 阅读全文 | 回复(10) | 引用通告 | 编辑

Re:在漫画中识别身边的违章 | 2016-10-23 3:25:17

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Re:在漫画中识别身边的违章 | 2016-10-18 16:17:17

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Re:在漫画中识别身边的违章 | 2016-10-16 6:38:13

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Re:在漫画中识别身边的违章 | 2016-10-11 18:03:30

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Re:在漫画中识别身边的违章 | 2016-10-8 18:33:33

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