シールドトンネル (9)

[VI-640] Efforts to apply the compact shield tonnneling method to gravel ground containing boulders

*Itsuki Matsuda¹, Takayuki Oda¹, Shinji Kobayashi¹, Mayumi Oohara¹ (1. MAEDA CORPORATION)

Keywords:compact shield tunneling method, rear soil removal method, pinch valve, debris removal hatch, uptake restriction bar, ribbon screw conveyor