The installation of fireproof panels in tunnels often leads to hidden water leakage behind these panels,making it difficult to detect.Infrared thermography is a non-contact non-destructive testing technology,which is often used to measure the surface temperature field because it is sensitive to surface thermal radiation.Based on infrared thermography,this study investigates the feasibility of vehicle-mounted non-contact rapid detection of hidden leaks in tunnels.To achieve this goal,a Yangtze River tunnel was selected as the testing site.Infrared thermal imaging equipment was mounted on the roof of a vehicle to conduct mobile scanning and imaging of the tunnel surfaces,enabling the precise identification of exist-ing leakage points via infrared thermograms.To further validate the effectiveness of detection,artificial moisture was ap-plied to the surface of the fireproof panels to simulate leakage,successfully identifying the leakage process.The experi-mental findings presented in this paper demonstrate the feasibility of employing infrared thermography for non-contact rapid detection of hidden leakage in tunnel environments.
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