METHOD AND DEVICE FOR INVESTIGATING SURFACE DETERIORATION OF NARROW PORTION BETWEEN STRUCTURES

摘要

PROBLEM TO BE SOLVED: To provide a method and the like for investigating surface deterioration of a narrow portion between structures, which enable an accurate grasp of surface deterioration conditions of the narrow portion between the structures.SOLUTION: A two-dimensional moving image of a structure surface of a narrow portion is taken by inserting a narrow portion surface deterioration investigating device 100, which can two-dimensionally travel in the narrow portion, into the narrow portion between structures. Still image data on the structure surface is generated from X-direction movement data and Y-direction movement data, which are recorded in a video recording unit body 200, and two-dimensional moving image data recorded in the video recording unit body 200.