摘要
研究目的:兰渝铁路西秦岭隧道全长约28.23 km,具有线路长、难度大、施工技术新等特点,隧道采用钻爆法和TBM联合施工。为更好解决西秦林隧道TBM洞内拆机所遇到的重难点问题,针对前人关于TBM洞内拆机技术研究不够系统深入的现状,充分研究西秦岭隧道工程特点,从拆机准备方案设计到主机系统及部件拆卸方法展开研究,全面分析与论述TBM洞内拆机关键技术,为本工程及今后类似工程施工提供参考。研究结论:(1)进行TBM洞内拆机准备方案设计时,需要充分考虑拆卸洞室设计、施工设备配置、设备清理及步进机构安装等方面;(2)进行主机部分拆卸工作时,需严格按照1#桥架、支撑系统、盾体、刀盘、主轴承及安装架的顺序;(3)总结并提出了机械部件、电器系统及液压系统的标识方法;(4)建议原拆卸洞室每边多增加0.50 m的余量,且在刀盘拆卸清理完成后进行一次全面的探伤检查,并对主轴承的保养与存放制定专项方案;(5)该研究成果能够为本工程及类似工程的TBM洞内拆机作业提供指导,以确保工程施工的安全和高效。
Research purposes： West Qinling Tunnel of Lanzhou -Chongqing Railway has some characteristics of long lines, high construction difficult and new construction technology, whose total length is about 28.23 kin. In order to better solve the difficult problems of disassembled scheme in - tunnel of West Qinling Tunnel, in view of the drawback to research on TBM disassembled technology in -tunnel, the key technologies were fully researched and analyzed from the two aspects of TBM disassembled preparation scheme and system demount methods, providing reference for this and similar project construction.Research conclusions： （ 1 ） When the scheme of TBM disassembled in - tunnel was designed, we should take full account of demount chamber design, construction equipment configuration, facilities cleaning and step mechanism installation. （2）The work of host section disassembly was in strict accordance with the order of 1# bridge, support system, shield, cutterhead, main bearing and mounting rack. （3）Identification methods of mechanical components, electric system and hydraulic system were summarized. （4） Width of demount chamber is smaller than actual demand, 0. 5 meter of allowance need to be increased per side. After the disassembly cleaning of cutterhead was completed, a comprehensive inspection was taken, and the special schemes for the maintenance and storage of main bearing were formulated. （5） The research results can provide guidance for TBM disassembled in - tunnel of this and similar projects in the future, to ensure construction safety and high efficiency.
出处
《铁道工程学报》
EI
北大核心
2016年第3期87-92,共6页
Journal of Railway Engineering Society
基金
国家重点基础研究发展计划(2014CB046906)
国家高技术研究发展计划(2012AA041801)
关键词
西秦岭隧道
TBM施工
洞内拆机
方案设计
West Qinling Tunnel
TBM construction
disassembling in -tunnel
scheme design
