Application of the image and laser sensors based tunnel scanning system

초록

Degradation of tunnel concrete liner requires routine and repetitive inspection to increase the life cycle of the structures. The tunnel inspection task, however, is labor intensive and time consuming process. Hence a computer based inspection system needs to be developed. In this paper, applicability of a tunnel scanner based upon a laser and an image scanning system, called as opto-laser tunnel scanner, is discussed. The image scanner can capture detailed surface features of tunnel liner such as micro cracks and spall, and laser scanner can reproduce geometric characteristics of a tunnel liner. Both types of data set have their own application. In addition the combined data set show three dimensional features of tunnel liner. This application will extend the data usage so it can be applicable for tunnel management.