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竖井凿岩钻架架设凿岩机组,钻凿下向孔的竖井掘进机械。主要用于竖井施工中钻凿爆破孔，也可钻凿注浆孔、勘探孔、探水孔和瓦斯排放孔等。按结构分为环形钻架和伞形钻架两类
expl. shaft drill jumbo

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