APPARATUS FOR MEASURING BURIAL DEPTH

PROBLEM TO BE SOLVED: To provide an apparatus for measuring a burial depth which can avoid a waste of time in operations. SOLUTION: The apparatus 10 comprises a first transmitting/receiving unit 26 and a second transmitting/receiving unit 30. These transmitting/receiving units have a coincide center and comprise transmitting antennas 28A, 32A and receiving antennas 28B, 32B, respectively. The spacing between the second transmitting antenna 32A and the second receiving antenna 32B differs from the spacing between the first transmitting antenna 28A and the first receiving antenna 28B. The first transmitting/receiving unit 26 and the second transmitting/receiving unit 30 move integrally by a unit support section 34. The first transmitting/receiving unit 26 and the second transmitting/receiving unit 30 are switched by a switching section 42 to perform transmission and reception. A signal processing section 50 of an arithmetic and control section 20 determines a reflected wave on the basis of the output signal of each receiving section and outputs it to an operation section 52. The operation section 52, on the basis of the signal of the reflected wave determined by the signal processing section 50, determines the covering depth of a reinforcing rod 18 and the propagation velocity of radio waves in a concrete structure 12 and displays them on a display section 22. COPYRIGHT: (C)2007,JPO&INPIT