“大坡度、小半径”隧道盾构掘进轴线控制技术

Axis Control Technology of Shield Tunneling for “Large-gradient Small-radius” Tunnels

摘要:

盾构法隧道“大坡度、小半径”施工，难度最大的为隧道轴线控制，通过施工时土压设定和轴线控制技术，解决成型隧道满足线性要求，主要是采用盾构推进油缸、铰接油缸与土压相结合、勤测勤纠缓纠、合理控制盾构掘进各项参数等控制措施^［1］。

Abstract:

In shield tunneling construction with large gradients and small radii, the largest difficulty is the control of tunnel axis. By means of earth pressure setting and axis control technology during construction, the linear requirements of the formed tunnel can be met. The main control measures include the combination of shield propulsion cylinders, articulated cylinders and earth pressure, the frequent measurement and correction, and slow correction, as well as the reasonable control of various parameters of shield tunneling.