DIRECTIONAL CONTROL METHOD AND DEVICE OF SHIELD EXCAVATOR

PURPOSE:To make it possible to drive an excavator while making directional control accurately by receiving signals from transmitters into boreholes bored around an excavation scheduled route by a receiver of the excavator to detect a self-position thereof. CONSTITUTION:Signals form distance measuring transmitters such as an electromagnetic wave, etc., provided into searching boreholes 44 bored around a space 40 are received by receiver 30 to detect a position of an excavator 1, and variations between the position of the excavator and a scheduled line 42 are calculated. A target line for returning the excavator to the scheduled line 42 is calculated together with detected values of an attitude and a direction of the excavator 1, a position, an attitude and a direction of the excavator 1 in the case it is moved along the target line are inputted from sensors, and the following target values are set. Accordingly, a directional control function with high accuracy can be provided to the shield excavator.