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MODERN TUNNELLING TECHNOLOGY 2020, Vol. 57 Issue (4) :158-162    DOI:
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Experimental Study on Seepage Detection behind Tunnel Segment with Sonar Technology
(1 CCCC Second Harbor Engineering Company Ltd., Wuhan 430040; 2 CCCC Highway Bridges National Engineering Research Centre Co. Ltd., Wuhan 430040; 3 Research and Development Center of Transport Industry of Intelligent Manufacturing Technologies of Transport Infrastructure, Wuhan 430040; 4 Key Laboratory of Large-span Bridge Construction Technology, Wuhan 430040)
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Abstract The detection of groundwater seepage has always been a challenge for the metro tunnel. Taking the Nan? zhuang-Lvdaohu shield running tunnel of Foshan metro line 2 as an example, field test is conducted to detect seepage behind segment by three-dimensional velocity vector sonar technology. Detections are taken at different points under various slurry chamber pressures, fitting and imaging and data analyzing on distribution pattern of seepage field behind segment are carried out, and the positions of seepage behind segment are determined; by comparing of ground surface settlements and settlement rates before and after grouting, the feasibility and reliability of sonar technology to detect seepage behind segment are verified.
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TAN Xiaofeng1 LIU Dongjun2 YANG Zhiyong3 HU Chengkai4
Keywords： Three-dimensional velocity vector sonar technology   Tunnel segment   Seepage detection   Field test     
Abstract： The detection of groundwater seepage has always been a challenge for the metro tunnel. Taking the Nan? zhuang-Lvdaohu shield running tunnel of Foshan metro line 2 as an example, field test is conducted to detect seepage behind segment by three-dimensional velocity vector sonar technology. Detections are taken at different points under various slurry chamber pressures, fitting and imaging and data analyzing on distribution pattern of seepage field behind segment are carried out, and the positions of seepage behind segment are determined; by comparing of ground surface settlements and settlement rates before and after grouting, the feasibility and reliability of sonar technology to detect seepage behind segment are verified.
Keywords： Three-dimensional velocity vector sonar technology,   Tunnel segment,   Seepage detection,   Field test     
Cite this article:   
TAN Xiaofeng1 LIU Dongjun2 YANG Zhiyong3 HU Chengkai4 .Experimental Study on Seepage Detection behind Tunnel Segment with Sonar Technology[J]  MODERN TUNNELLING TECHNOLOGY, 2020,V57(4): 158-162
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