補修･補強 (7)

5:10 PM - 5:20 PM JST(8:10 AM - 8:20 AM UTC)

[VI-1268] Grout hole repair method for underground power transmission shield tunnel

*Kazuki Sakurai¹, Atsushi Koizumi¹, Katsuhiro Hosoya¹, Yukihiro Naito¹ (1. Tokyo Electric Power Company Power Grid, Incorporated)

Keywords:

Shield tunnel,Grout hole,Deterioration,leakage,Repair

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