Study on Launching and Receiving Technology of Shield Tunnel

摘要

The launching and arriving of shield machine are the key aspects of shield tunneling when crossing rivers, which directly affect both shield driving and the stability of working shaft. Based on the background of Xijiang crossing project of gas pipeline network in Guangdong province, this paper mainly illustrate the key starting and arriving procedures of slurry shield, and the numerical simulation method is used to analyze the stability of shield excavation face under different horizontal and longitudinal consolidating range. On this basis, combined with other engineering practice, a reasonable reinforcement range is also proposed in the shield starting and receiving section.