Supply manner null of the mud water in the mud water type shielded tunnelling machine and the mud water type shielded

摘要

PURPOSE: To accelerate fluidization of slurry in a pressure camber to prevent the detention, adhesion and blockade of earth slurry. ;CONSTITUTION: A rotatable cutter head 6 capable of being rotated around the axial center O of a shield is provided on a partition wall 2 of the front of a shield main body 1 through a bearing 3, slurry is supplied to the inside of a pressure chamber 13 between the partition wall 3 and cutter head 6 through a slurry pipe, at the same time, slurry is supplied in the direction of the axial center O of the shield through a discharge port 21a of main slurry pipes 21A and 21B connected to the upper part of the partition wall 2 in a shield machine discharging earth slurry from a slurry withdrawal pipe. The slurry withdrawal pipe 15 is connected to the lower part of the partition wall 2.;COPYRIGHT: (C)1995,JPO