CD工法在公山尾隧道洞口段施工中应用  

Application of CD Method in the Construction of Gongshanwei Tunnel Portal

作　　者：杨相如[1] YANG Xiangru(Fujian Chuanzheng Communications College,Fuzhou 350007)

机构地区：[1]福建船政交通职业学院,福建福州350007

出　　处：《福建建筑》2018年第11期55-58,共4页Fujian Architecture & Construction

基　　金：2015年福建省中青年教师教育科研项目(NO201562)

摘　　要：公山尾隧道右洞出洞口段断面面积超大,存在浅埋偏压,围岩稳定性差。在分析隧道工程地质条件基础上,提出联合采用大管棚、小导管注浆、超前锚杆等超前支护手段,通过CD工法进洞。监控量测结果表明,开挖一个月后,围岩和支护结构整体变形已经趋于稳定,说明偏压浅埋特大断面隧道洞口段采用CD工法开挖对于控制围岩变形效果良好。The section area of the right hole exit section of the Gong Shan Wei tunnel is very large,with shallow buried bias and poor sur-rounding rock stability.By analyzing the tunnel engineering geological conditions,the advanced support means,such as large pipe shed,small pipe grouting and advance bolt,were put forward,and the CD method was adopted for entering the tunnel.Monitoring results showed that after one month of excavation,the overall deformation of surrounding rock and supporting structure had stabilized.The CD method is ef-fective in controlling the deformation of the surrounding rock in the shallow section of the tunnel.

关 键 词：隧道工程 CD工法 特大断面 监控量测 

分 类 号：U455.4[建筑科学—桥梁与隧道工程]