In order to open the pressurized chamber for cutter head repairing, this technology is adopted to consolidate the river-bed ground and to construc t the cutter head repairing cavern.

• 为达到敞开式开仓修复刀盘条件,决定从右线对左线盾构机前方地层进行提前加固;同时在合理的位置,从右线开挖通道进入左线,提前进行刀盘修复洞室的开挖。