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retrograde grouting
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retrograde grouting
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工学
隧道及地下工程注浆工艺
释
retrograde grouting
后退式注浆
钻孔一次性成孔至设计孔深后,将带有止浆塞的注浆管插入钻孔内,通过止浆塞将钻孔分成若干段,然后自下而上逐段实施注浆的工艺。又称分段上行式注浆。
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