金仁桐高速桐梓河大桥大倾角隧道锚暗洞开挖施工方案研究

Research on Construction Scheme for the Excavation of the Dark Hole of the Large Inclination Tunnel Anchor of Tongzihe Bridge in Jinrentong Expressway

文章主要介绍了金仁桐高速公路山区千米级大跨度悬索桥桐梓河大桥大倾角、超深隧道锚暗洞开挖施工方案,重点论述了在陡峭山区大倾角设计的隧道锚暗洞开挖中采取的测量、开挖、运输各施工阶段的施工工艺措施,极大地加快了大跨度悬索桥大倾角超深隧道锚的施工进度。研究成果为国家西南片区、山区类似的大型隧道锚、引水隧洞等大倾角隧洞开挖确定了一定的施工工艺标准和施工手段,有效地推进了地质条件复杂的山区峡谷地带基建发展。

This paper mainly introduces the construction scheme of large inclination angle and ultra-deep tunnel anchor dark hole excavation of Tongzihe Bridge,a kilometer-scale long-span suspension bridge in mountainous area of Jinrentong Expressway,and focuses on the construction technology measures taken in each construction stage of measurement,excavation and transportation in the excavation of tunnel anchor dark hole designed for large inclination angle in steep mountainous areas,which greatly accelerates the construction progress of large-span suspension bridges with large inclination and ultra-deep tunnel anchors.The research results have determined certain construction technology standards and construction methods for the excavation of large inclination tunnels such as large-scale tunnel anchors and diversion tunnels in southwest China and mountainous areas,and effectively promoted the development of infrastructure in mountainous and canyon areas with complex geological conditions.