鏡切断工
Kagami-setsudan construction
No.1発進立坑掘削工
No.1 Departure Shaft Excavator
No.1発進立坑V-JET工法その1
No.1 Starting Shaft V-JET1
No.1発進立坑V-JET工法その2
No.1 Starting Shaft V-JET2
No.1発進立坑
地盤改良工プラント
No.1 ground improvement plant
No.1発進立坑鋼矢板圧入工
No.1 Sheet pile press-in
計画工程表
Process Sheet