采空区灌水防尘时应注意哪些问题？--qsf999的安全生产小屋

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采空区灌水防尘时应注意哪些问题？ | 2011-8-4 12:47:00

采空区灌水防尘时应注意哪些问题？

（1）必须根据煤层赋存条件和采煤方法选用适当的灌水方法。如急倾斜煤层或顶板破碎易冒落严实的采空区，用扒坑灌水或插管注水较合适。

（2）灌水时要注意观察和巡回检查，防止发生漏水跑水或水淹运输机巷，造成局部水患而影响生产。

（3）如果媒体坚硬致密裂隙不发育，灌水时水分很难渗入媒体，此时可在水中加入适量湿润剂，以提高灌水的防尘效果。

（4）如果下分层有隔水性能较好的夹研层，会影响灌水效果，造成夹脉上煤体湿润较好，而夹研下很难湿润。因此，分层开采时，应尽量把夹研层置于分层的底部，以确保灌水效果。

（5）如果采掘接替紧张，不可能在采前1—2个月进行灌水，这样可在掘进上风巷时，同时向采空区灌水。或者在回采上分层时采用随采随灌的方法。如埋管灌水、插管灌水即可。

（6）采空区灌水会增加下分层煤体的裂隙，也会在采空区内形成漏风通道，特别是采空区内残留碎煤脱水后极易被氧化而造成自然发火。因此，要加强采空区防火管理，严格控制漏风或在水中加注阻化剂，以防自燃发火。

By:qsf999 | 阅读全文 | 回复(13) | 引用通告 | 编辑

Re:在漫画中识别身边的违章 | 2017-2-20 19:03:22

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Re:在漫画中识别身边的违章 | 2017-2-18 17:29:25

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Re:在漫画中识别身边的违章 | 2017-2-18 16:33:51

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Re:在漫画中识别身边的违章 | 2016-10-19 13:49:29

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Re:在漫画中识别身边的违章 | 2016-10-16 17:27:42

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Re:在漫画中识别身边的违章 | 2016-10-16 11:30:15

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Re:在漫画中识别身边的违章 | 2016-10-1 12:42:08

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原创 | 2016-9-30 16:05:34

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原创 | 2016-9-28 21:22:25

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原创 | 2016-9-6 21:47:49

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