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| 全断面掘进炮孔组把需要的断面一次全部开挖完成的施工方法。在岩石坚硬的大断面隧道中应用，可获得较高的掘进效率。掏槽方式以平行直孔掏槽为主，炮孔直径大多采用 36 full50mm。全断面上的所有炮孔称为炮孔组 | |||
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