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大管棚超前支护施工技术
引用本文:许家华,吴锋.大管棚超前支护施工技术[J].铁道建筑技术,2009(5):126-129.
作者姓名:许家华  吴锋
作者单位:中铁十七局集团第四工程有限公司,重庆,401147
摘    要:在长大隧道施工中,为了保证施工安全、稳定、快速地进行,可在软弱围岩、断层破碎带、岩堆等不良地质地段进行超前预支护。介绍了大管棚超前支护施工技术。

关 键 词:隧道  超前预支护  长大管棚

Construction Technology of Pre-grounted Big Tube Canopy
Xu Jiahua,Wu Feng.Construction Technology of Pre-grounted Big Tube Canopy[J].Railway Construction Technology,2009(5):126-129.
Authors:Xu Jiahua  Wu Feng
Institution:(China Railway 17^th Bureau Group Co. Ltd. , Chongqing 401147, China)
Abstract:For the sake of the assurance construction safety, stabilize and running quickly,it carries on forepoling around the rock in the flabbiness and the fault crushed zone in the process of big-long tunnel construction. According to the past tunnel construction, the pre-grounted big tube canopy is adopted.
Keywords:tunnel  forepoling  big-long tube canopy
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