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Research on Hardware System for Automatic Detection of Tunnel Lining Crack on High-Speed Railway

WANG Hua-xia;QI Tai-yue;WANG-Rui;MOE Key Laboratory of Transportation Tunnel Engineering,Southwest Jiaotong University;  
Lining crack is one of the most common diseases of the tunnel. Because the train runs very fast on high-speed railway,the concrete debris-falling due to tunnel lining cracking may cause serious safety hazard on the operation of high-speed railway. At present in China,however,it is manual inspection that dominates the inspection of tunnel lining crack,while the detection system based on image processing has been widely used in bridges,roads and other projects; but because of the particularity of the tunnel,the development of detection system used for tunnel is relatively slow. In this paper,by combining with the characteristics of high-speed railway tunnel itself,a set of automatic detection system used for detecting the tunnel lining cracks was put forward,and the working principle of this system was analyzed. On this basis,the models of various hardware devices in relation to this automatic detection system were selected.Finally,the assembling and debugging for this system were all completed in laboratory,and the expected result has been basically achieved.
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