BURIED PIPE INSPECTION APPARATUS AND BURIED PIPE INSPECTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a buried pipe inspection apparatus and a buried pipe inspection method capable of easily, reliably detecting damage of a duct buried underground.;SOLUTION: A magnetic field generator 14 applying an AC magnetic field H1 into the ground and an atomic magnetometer 15 are moved along a ground surface 18, a secondary magnetic field H2 generated based on an eddy current I generated in an underground buried pipe 11 by the AC magnetic field H1 is received by a glass cell 32 of the atomic magnetometer 15, an electrical signal corresponding to the intensity of the secondary magnetic field H2 is extracted, and it is determined whether the buried pipe 11 is damaged on the basis of a change in the electrical signal extracted from this atomic magnetometer 15.;COPYRIGHT: (C)2015,JPO&INPIT