Construction method of vertical shaft starting device for top-down pipe-jacking construction in shield tunnel

• Main Authors: WANG YAO, ZHANG KEMING, LIANG YU, SHUAI YUBING, LI SEN, YOU DAJIANG, WU HAO, LI JIASHUAI, ZHOU TIANHAO
• Format: Patent
• Language: Chinese; English
• Published: 15.01.2021
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS; SHAFTS; TUNNELS

The invention discloses a construction method of a vertical shaft starting device for top-down pipe-jacking construction in a shield tunnel. According to the method, a pipe jacking machine and a matched trolley are transported to a vertical shaft construction position, an initial position is adjusted, a pipe piece supporting system is adjusted to a working position, a tunnel guide rail at the bottom of equipment is dismounted, a recyclable pipe jacking main machine is made to descend to the contact position capable of directly cutting a composite pipe piece through a crane, a starting steel sleeve is welded, the space between shield tail brushes is filled with grease, and a pipe jacking piece is hoisted to the construction position every time the pipe jacking machine tunnels to a certain position. By means of a matched trolley system and a crane pipe jacking supporting and jacking system, equipment can be integrally conveyed into a main tunnel or conveyed from the main tunnel, mountingand dismounting are conv