EQUIPMENT FOR CONTROLLING EXCAVATION DIRECTION OF SHIELD MACHINE FOR JACKING SHIELD TUNNELING METHOD

摘要

PROBLEM TO BE SOLVED: To provide equipment for controlling an excavation direction of a shield machine for a jacking shield tunneling method, which can accurately guide the shield machine to an arrival target position by checking the position and attitude of the shield machine by means of electromagnetic waves.;SOLUTION: This equipment includes: a transmission which is provided in the shield machine so as to transmit the electromagnetic waves forming a magnetic field with a predetermined phase; a reception mechanism which is provided in the arrival target position of the shield machine so as to receive the electromagnetic waves corresponding to a synthetic magnetic field comprising the above magnetic field and a magnetic field with a different phase, formed from an induced current caused by the above magnetic field; a separator for applying Fourier transformation to the received electromagnetic waves so as to separate them into a component corresponding to the above magnetic field and a component corresponding to the magnetic field with the different phase; and a controller for guiding the shield machine to the arrival target position depending on the intensity of the separated component corresponding to the magnetic field with the predetermined phase.;COPYRIGHT: (C)2011,JPO&INPIT