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天井吊罐法掘进
在天井掘进中,以提升绳悬挂吊罐作为工作台进行作业。瑞典首先应用升降吊罐代替人工搭拆工作台进行天井掘进,从而使掘进工艺简单、速度快、工效高
expl.
raising by cage lift
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