巴杰若隧道软弱围岩大变形施工技术研究  

Study on Large Deformation Construction Technology for Weak Surrounding Rock of Bajieruo Tunnel

作　　者：张宇斐[1] 

机构地区：[1]中铁十八局集团第五工程有限公司,天津300451

出　　处：《铁道建筑技术》2017年第7期85-89,共5页Railway Construction Technology

基　　金：2016年度中铁十八局集团有限公司科技研究开发计划课题(008)

摘　　要：新建川藏铁路拉萨至林芝段站前工程LLZQ-9标段的巴杰若隧道属于软弱围岩大变形隧道,提高软弱围岩隧道的施工水平和预控软弱围岩大变形是本工程的施工难点。施工中通过抓住软弱围岩隧道工程的特点,落实好"三超前(超前预报、超前加固、超前支护)、四到位(工法选择到位、支护措施到位、快速封闭到位、衬砌跟进到位)、一强化(强化量测)"施工技术关键环节,为后期施工软弱围岩大变形隧道提供借鉴。Bajieruo Tunnel located at LLZQ-9 tenders of the newly-built Sichuan-Tibet Railway Lhasa to Linzhi section,is a large deformation tunnel with weak surrounding rock. It is not only difficult to improve the construction level of the weak surrounding rock tunnel,but also hard to control the large deformation of the weak surrounding rock in advance. During the construction process,by seizing the characteristics of the weak surrounding rock tunnel project,and implementing the key link of construction technology included ＂three advance（prediction advanced,strengthening advanced,forepoling）,the fourth place（work options in place,support measures in place,quickly closed in place,lining up in place）,an enhancement（measurement improved） ＂that could provide reference value for the later construction of large deformation tunnel with weak surrounding rock.

关 键 词：隧道工程 软弱围岩 大变形 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]