摘要
在立交隧道施工过程中 ,如何有效地控制后行开挖隧道的施工影响 ,确保先行开挖成型隧道结构及两座隧道层间围岩的安全与稳定是施工的重点、难点。文章结合工程的施工经验与体会 ,介绍了南京地铁TA1标工程中上下间隔仅为 2 .46m的两座斜向立交隧道在施工中所采用的弱震动爆破开挖、初期支护及监控量测等施工控制技术 。
During the construction of two over-crossing tunnels, it is essential and also difficult to effectively control the influence caused by the later-constructed tunnel so as to ensure the safety and stability of the earlier-constructed tunnel and the surrounding rock between the two tunnels. Based on the experience of a specific project, this paper introduces the construction control technology by using weak-vibration blast, preliminary support, monitoring and surveying adopted in the two oblique over-crossing tunnels (only 2.46m clear distant) of Nanjing Metro lot TA1, which can be served as a valuable reference for similar projects.
出处
《现代隧道技术》
EI
2003年第6期34-38,共5页
Modern Tunnelling Technology
关键词
立交隧道
弱震动爆破
初期支护
监控量测
Over-crossing tunnels
Weak-vibration blasting
Preliminary support
Monitoring and surveying
