In order to resolve the challenges encountered in the construction of Gaoligongshan Tunnel such as soft rock deformation of inclined shafts, water drainage and protection of vertical shafts, TBM jam in crossing areas with adverse geology, solutions and key construction techniques are developed through theoretical analysis, field test, scheme optimization and staged review and summary. The performance results of field practice show that: (1)the goal of no damages and no replacement of the primary support can be achieved by adopting the comprehensive deformation prevention technique of "ring support early formation and quick closure", setting of proper excavation line curvature, and reinforcing of support; (2)the risk of vertical shaft flooding during construction in waterrich weak granite can be greatly reduced by adopting the water control principle of "exploration for any excavation, plugging as the main method, and supplemented with drainage method" and the key pregrouting technique of Sshaped deep boreholes; (3)the opentype TBM can quickly and safely pass through the unfavorable mylonitic granite stratum by adopting the small pilot tunnel construction method, thus the fast and highefficiency construction performance of TBM can be fully utilized.

为解决高黎贡山隧道在施工中遇到的斜井软岩变形、竖井井筒防治水、TBM穿越不良地质卡机等难题，通过对存在问题进行理论分析、现场试验、方案优化、阶段总结，提出解决方案与关键施工技术，现场实践结果表明： 1）斜井软岩变形采用“早成环、快封闭”、合理设置开挖轮廓线曲率、加强支护的综合防变形技术，达到初期支护不破坏、不拆换的目的； 2）采取“有掘必探、以堵为主、堵排结合”的治水原则和地表深孔S型深孔预注浆关键技术，能够大大降低富水软弱花岗岩竖井建井淹井风险； 3）通过采用小导洞工法能使敞开式TBM快速安全通过糜棱化花岗岩不良地层，充分发挥TBM的快速高效施工性能。