Abstract：Research purposes: The large deformation easily happens to the primary supportduring construction of long-distance carbon schist tunne,l and the supportdeformation and fouling of clearance gauge bring aboutgreatchallenge to the on -site construction, construction process and construction security. Combined with the control technology for the large deformation of the carbon schist ofXinshuhe Tunnel and the experience in construction of the large deformation tunnel in the pas,t thispapersummarizes the control technology and control scheme for the carbon schistofsingle –track railway tunnel forproviding the reference to the similarworks.
Research conclusions:The three -step temporary inverted arch method can be adopted to the single -track railway tunne,l with strictcontrolof the step lengthsof the step, inverted arch and secondary lining after installation of sectional concrete inverted arch on the top step forgetting the perfectcontrol effec.t The appropriate deformation quantity should be remained in advance to the large deformation tunnel according to themonitored andmeasured data. This is essential to preventof the support's damage in early -stage, the protected arch 's crack in later -stage and the control of construction cos.t The tunnel deformation is restrained to some extent after grouting through the back of the primary supportwalland improvementsof the type ofsteel frame, the form and location of the jointand installation of the vertical connection. The long step construction orkerve has to be forbidden during construction.
苟 彪，张奕斌. 新蜀河隧道炭质片岩大变形控制技术研究[J]. 铁道工程学报, 2009, 26(11): 40-44.
GOU B iao, ZHANG Y i-bin. Research on the Control Technology for Large Deformation of Carbon Schist of X inshuhe Tunnel. 铁道工程学报, 2009, 26(11): 40-44.
2009, Vol. 26 
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