In recent years,with the help of good national policy support,the design,manufacturing and construction technology for tunnel boring machine (TBM) in China have been greatly improved;but compared with foreign relatively proven technology,there is still a certain gap for domestic technology development and engineering application.Based on the situation analysis of research and application of TBM in China and abroad,the research work for TBM design is carried out according to the complex geological conditions of Gaoligongshan Tunnel on Dali-Ruili Railway as follows.(1) The prototype disc cutter rock breaking and scaled disc cutter wearing experiment are carried out to provide reference for adaptable design of TBM cutterhead and key parameter calculation.(2) The TBM design scheme is discussed from the aspects of high efficiency rock breaking of cutters and cutterhead,TBM over-excavation,integrated support system,etc.(3) Two kinds of advanced geological prediction technology,i.e.HSP method and RTP method,are researched.The study results can provide reference for design and manufacture of TBM with high adaptability in complex geology and construction application in Gaoligongshan Tunnel.%近年来,在TBM装备研发、推广应用力度不断加大的背景下,我国TBM设计、制造及施工技术均有了大幅度的提升,但与国外相对成熟的技术相比,在核心技术掌握及应用水平上还有一定的差距.在分析国内外TBM研究与应用现状的基础上,针对大瑞铁路高黎贡山隧道所处地段存在的“三高四活跃”复杂地质条件,开展TBM设计方案研究工作:1)通过开展原型滚刀破岩及缩尺滚刀磨损试验,为TBM刀盘适应性设计及关键参数计算提供依据;2)从刀盘刀具高效破岩、TBM扩挖和集成式支护系统等方面对TBM设计方案进行论述;3)对搭载式HSP法、RTP岩体温度法2种超前地质预报技术进行研究.研究成果能够为复杂地质条件下高适应性TBM设计、制造及其在高黎贡山隧道工程中的应用奠定基础.
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