地下水的排水疏干--qsf999的安全生产小屋

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地下水的排水疏干 | 2011-9-24 18:49:00

地下水的排水疏干

    在调查和探测到水源后，最安全的方法是预先将地下水源全部或部分疏放出来。疏干方法有3种：地表疏干、井下疏干和井上下相结合疏干。
    （1）地表疏干。在地表向含水层内打钻，并用深井泵或潜水泵从相互沟通的孔中把水抽到地表，使开采地段处于疏干降落漏斗水面之上，达到安全生产的目的。
    （2）井下疏干。当地下水源较深或水量较大时用井下疏干的方法可取得较好的效果。根据不同类型的地下水，有疏放老孔积水和疏放含水层水等方法。

By:qsf999 | 阅读全文 | 回复(15) | 引用通告 | 编辑

Re:在漫画中识别身边的违章 | 2017-2-20 18:08:32

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Re:在漫画中识别身边的违章 | 2017-2-20 15:31:50

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Re:在漫画中识别身边的违章 | 2016-10-23 13:17:09

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Re:在漫画中识别身边的违章 | 2016-10-23 1:58:34

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Re:在漫画中识别身边的违章 | 2016-10-21 13:31:34

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Re:在漫画中识别身边的违章 | 2016-10-20 5:45:33

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Re:在漫画中识别身边的违章 | 2016-10-15 3:48:56

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Re:在漫画中识别身边的违章 | 2016-10-11 13:50:19

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By:nlaei(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 | 2016-10-11 3:44:12

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原创 | 2016-9-30 16:02:05

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原创 | 2016-9-28 21:18:48

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原创 | 2016-9-6 21:44:30

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