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在大跨度超浅埋暗挖隧道工程施工中,采用超大规模的管棚来替代小导管,通过一次注浆的方法预加固土体,具有很好的实际效果。本文介绍在1孔跨的深圳地铁白石洲车站1号人行通道大跨度浅埋暗挖隧道工程中.采用超大规模管棚来预加固土体的施工特点及施工方法,探讨了这种支护方法的可行性及其优缺点。
In the construction of long-span ultra-shallow buried tunnels, ultra-large-scale pipe sheds are used instead of small ducts. Pre-reinforcement of soil by one grouting method has good practical results. This article describes the 1-hole span of the Shenzhen Bai Shizhou station No. 1 Pedestrian Passage long-span shallow excavation tunnel project using ultra-large-scale pipe roof to pre-reinforcement of soil construction characteristics and construction methods to explore this support method The feasibility and its advantages and disadvantages.