通省隧道云母片岩大变形控制施工技术

Construction Technology of Large Deformation Control of Mica schist for Tongsheng Tunnel

中文关键词:通省隧道  云母片岩  大变形控制  施工技术

英文关键词:tongsheng tunnel  mica schist  large deformation control  construction technology

中文摘要:

      通省隧道隧址区主要穿越武当山群地层，岩层结构主要是以含云母为主矿物成份的片岩。在施工过程中隧道围岩岩性与结构多变，强烈的初期支护变形破坏，隧道净空侵限，给施工带来很大的困难，严重制约了工程进度。针对通省隧道地质特点，介绍了在施工过程中对云母片岩大变形的施工防控措施，实现了类似围岩的安全快速施工。

英文摘要:

      Tongsheng tunnel area mainly through Wudang Mountains group formation,rock structure is the main mineral composition mainly containing mica schist.In the process of construction,the changeable tunnel surrounding rock lithology and structure,strong initial support deformation and tunnel clearance clearance limit, to increase the difficulty of tunnel construction, restricted the progress of the project. In this paper,through the tunnel geological features introduced in the construction process of the mica schist large deformation of construction control measures, to achieve safety and rapid construction for similar surrounding rock.