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Global Geology 2024, 27(1) 56-62 DOI:
ISSN: 1673-9736 CN: 22-1371/P |
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Application of transient Rayleigh wave in detection of tunnel lining void area |
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ZHENG Chao 1 , WANG Yanlong 2 , ZHANG Baohui 3 and DU Lizhi 1* |
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1. College of Construction Engineering, Jilin University, Changchun 130026, China;
2. China Water Northeastern Investigation, Design & Research Co., Ltd., Changchun 130021, China;
3. Changchun Urban Investment Infrastructure Construction Project Management Consulting Co., Ltd, Changchun 130031, China |
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Abstract:
Transient Rayleigh wave detection is a high-precision nondestructive detection method. At present, it has been widely used in shallow exploration, but rarely used in tunnel lining quality detection. Through the tunnel lining physical model experiment, the layout defects of the double-layer reinforcement lining area were detected and the Rayleigh wave velocity pro?le and dispersion curve were analyzed after data processing, which ?nally veri?ed the feasibility and accuracy of Rayleigh wave method in detecting the tunnel lining void area. The results show that the method is not a?ected by the reinforcement inside the lining, the shallow detection is less disturbed and the accuracy is higher, and the data will ?uctuate slightly with the deepening of the detection depth. At the same time, this method responds quite accurately to the thickness of the concrete, allowing for the assessment of the tunnel lining’s lack of compactness. This method has high e?ciency, good reliability, and simple data processing, and is suitable for nondestructive detection of internal defects of tunnel lining structure.
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Keywords:
transient Rayleigh wave
detection
tunnel lining quality detection
dispersion curve
Rayleigh wave velocity pro?le
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