The Development of "Gyro Runner" A Totally Unmanned Shield Guiding System

This paper reports on development of gyro runner a totally unmanned shield guiding system. Consisting of automatic survey system and the automatic shield guiding system.

More than 90% of current shield tunnels are small-bore and of curved geometry. Where a gyrocompass mounted in the machine have been frequently used. However, the gyrocompass cannot detect the potential side slip of the shield machine. And the accumulated positional error can only be adjusted by a conventional tunnel survey. A system that minimizes such survey work has been developed.

The new survey method comprises an autotracking total station, a laser gyro and an image processor, and performs accurate shield position/posture detection by referring to the survey points at every measurement cycle.

The shield guiding system, on the other hand, selects the optimum jack pattern and directional control procedure that conducts the shield machine on the planned line.

On site, good accuracy and labor saving effect have been verified.