山岳トンネル (6)

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[VI-1022] Tunnel Penetration due to Unprocessed portal on Arrival Side
-Example of Eda Tunnel Construction on the Susami Kushimoto Road-

*Sho Taniguchi¹, Chiharu Sugawara¹, Takeru Morimoto¹, Eijiro Kido¹ (1. HAZAMA ANDO CORPORATION)

Keywords:

mountain tunnel,Unprocessed portal,auxiliary method,thin overburden,unequivalence pressure

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