設計技術 (1)

[VI-33] Design and construction of auxiliary methods for tunnel excavation directly under in-service roads

*Takahiro Tanaka², Hideki Kitaoka², Keiichi Kitai¹, Toru Miura¹ (1. Japan Railway Construction,Transport and Technology Agency, 2. MAEDA CORPORATION)

Keywords:Directly under the road in service, Small earth cover, Unconsolidated ground containing water, super-long forepiling, Structural considerations for auxiliary methods