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隧道建设（中英文） ›› 2019, Vol. 39 ›› Issue (5): 810-819.DOI: 10.3973/j.issn.2096-4498.2019.05.013
ZHUO Yue, GAO Guangyi*
卓越，高广义*
摘要：
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 waterrich 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 pregrouting technique of Sshaped deep boreholes; (3)the opentype TBM can quickly and safely pass through the unfavorable mylonitic granite stratum by adopting the small pilot tunnel construction method, thus the fast and highefficiency construction performance of TBM can be fully utilized.
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