Underground roadway construction method suitable for double-shield tbm tunneling

• Main Authors: ZHOU CHANGKUAN, WANG HAILIAN, CHEN HAIRUI, SONG XIAOLIN, FENG HAILONG, LI LINPU, LIU HAODONG, FENG CHANGRU, GUO XIAOSHENG, LIU WEIQIANG, MENG JUNBING
• Format: Patent
• Language: Chinese; English
• Published: 06.05.2022
• Subjects: BLASTING; EARTH DRILLING; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; GALLERIES; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LARGE UNDERGROUND CHAMBERS; LIGHTING; LUBRICATING; MECHANICAL ENGINEERING; MINING; SHAFTS; THERMAL INSULATION IN GENERAL; TUNNELS; WEAPONS

The invention relates to the technical field of roadway engineering, in particular to an underground roadway construction method suitable for double-shield tbm tunneling, which comprises the following steps of: firstly, circularly starting a hydraulic pump station, immediately rotating a cutter head after the stability is determined, adjusting the posture of a tunneling machine, slowly increasing a pressure knob of a thrust cylinder to a position suitable for normal cutting of the lithology, and starting tunneling; after the propelling displacement reaches the rated displacement, the propelling pressure is zeroed, then rotation of the cutterhead is stopped, step changing is prepared after the rotating speed of the cutterhead is zero, during step changing, the front shield stabilizer is stretched out, the supporting shoe is withdrawn, then the propelling oil cylinder retracts to pull the tight supporting shield to move forwards, and when the propelling displacement becomes the initial value, step changing is f