松散堆积地层大断面公路隧道进洞工法研究  

Study on Construction Method of Large Cross Section Highway Tunnel in Loosely Accumulated Stratum

作　　者：邓绶川 吴冬[2] 方晓峰 张乾[2] 张航[2] DENG Shouchuan;WU Dong;FANG Xiaofeng;ZHANG Qian;ZHANG Hang(Sichuan Highway Bridge Construction Group Co.,Ltd.,Highway Three Branch,Chengdu Sichuan 610200,China;Key Laboratory of Transportation Tunnel Engineering of Ministry of Education,Southwest Jiaotong University,Chengdu Sichuan 610031,China)

机构地区：[1]四川公路桥梁建设集团股份有限公司公路三分公司,四川成都610200 [2]西南交通大学交通隧道工程教育部重点实验室,四川成都610031

出　　处：《交通节能与环保》2020年第3期141-144,共4页Transport Energy Conservation & Environmental Protection

摘　　要：曾家岩北延伸穿越内环新增通道工程(二标段)火凤山隧道明洞段在进洞过程中出现冒顶塌方、地表沉降过大等情况,因而多次改变施工方案。通过对现场监测数据的分析,结合设计方案,本文探讨了松散堆积地层中隧道进洞的合理工法。结果表明:侧壁导坑法相对三台阶分部开挖法,在控制地表沉降和洞内位移方面更具有优势,较适合松散堆积地层隧道的施工。Zengjiayan North extends through the inner ring new passage project(the second bid section)Huofengshan Tunnel Myeongdong section.During the process of tunnel entry,collapse and ground settlement are too large,so the construction plan was changed many times.Through the analysis of the on-site monitoring data and the design plan,the reasonable construction method of tunnel entry in the loosely packed stratum is discussed.The results show that the side wall guide pit method is more advantageous than the three-step partial excavation method in controlling ground subsidence and displacement in the cave,and is more suitable for the construction of loosely packed ground tunnels.

关 键 词：隧道工程 松散堆积地层 进洞 数据分析 施工工法 

分 类 号：U455.49[建筑科学—桥梁与隧道工程]