超軟弱地盤における泥土圧シールドの掘進管理について

抄録

Subway Line No.12 will consist of Tokyo's first loop line, a 29-km-long route which will circle Tokyo from the departure point at the Shinjuku subcity center, and of an efferent arm extending approximately 14-km to the northwest of the metropolis.
In this section, Kuramae and Ryogoku Stations will be excavated by the cut-and-cover method, and a tunneling shield will he used to traverse the Sumida River and contact the two stations with parallel single-track tunnels.
In this paper, the driving control in extremely soft ground, on Sumidagawa Shield Line is reported.