软弱围岩段小净距并行隧道施工技术研究

Research on construction technology of parallel tunnels with small clear distance in weak surrounding rock

文章结合深圳通成路工程,探讨小净距偏压隧道监测、中间岩柱加固等关键工序,为该公路的整体线型规划提供有利条件,保证了隧道围岩的稳定性。同时,采取施工动态设计对隧道初支修正、控制爆破等措施,保证了隧道安全。

In conjunction with the Shenzhen Tongcheng Road Project,this article discusses key procedures such as small-distance unsymmetrical pressure tunnel monitoring and intermediate rock pillar reinforcement,which provides favorable conditions for the overall linear planning of the highway,and ensures the stability of the surrounding rock of the tunnel.At the same time,the construction dynamic design is adopted to correct the initial support of the tunnel and controlled blasting to ensure the safety of the tunnel.