矿井冒顶事故的应急支护--杨远锋的博客

矿井冒顶事故的应急支护

[ 2011-1-9 13:01:00 | By: 杨远锋 ]

1.局部小冒顶的处理。回采工作面发生冒顶的范围小，顶板没有冒实，而顶板研石已暂时停止下落，这种局部小冒顶比较容易处理。一般采取掏梁窝、探大梁，使用单腿棚或悬挂金属顶梁处理。

　　2.局部冒顶范围较大的处理。一种是伪顶冒落直接项未落，一般采取从冒顶两端向中间进行探梁处理；另一种是直接顶冒落，而且冒落区不停地沿煤壁空隙往下淌碎矸石，一般采取打撞楔的办法处理。

　　3.大冒顶的处理。缓倾斜薄煤层和中厚煤层，尤其是中厚煤层处理工作面大冒顶的方法基本上有两种：一是恢复工作面的方法；另一种是另掘开切眼或局部另掘开切眼的方法。

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原创

[ 2016-9-6 20:31:38 | By: 原创(游客) ]

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原创

[ 2016-9-28 20:09:13 | By: 原创(游客) ]

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原创

[ 2016-9-30 14:49:36 | By: 原创(游客) ]

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Re:在漫画中识别身边的违章

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Re:在漫画中识别身边的违章

[ 2016-10-14 0:07:04 | By: ptxbf(游客) ]

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Re:在漫画中识别身边的违章

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Re:在漫画中识别身边的违章

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