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MODERN TUNNELLING TECHNOLOGY 2019, Vol. 56 Issue (5) :195-200    DOI:
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An Intelligent Device for Coring at Tunnel Vault and Corresponding Coring Hole Repairing Technology
(1 China Railway 11 Bureau Group Co., Ltd., Wuhan 430061; 2 Beijing-Shenyang Railway Passenger Dedicated Line Jingji Co., Ltd.,Beijing 100166; 3 Beijing HomeVic S&T Development Co., Ltd., Beijing 101500)
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Abstract Because of the special position of tunnel vault, conventional water drill can′ t safely and effectively carry out coring. An intelligent device for coring at tunnel vault was developed, which eliminates the risks of motor burning and electric leakage caused by cooling water reflux. The device can intelligently identify the position of waterproof board to avoid the risk of breaking of waterproof board; in the process of coring, the compactness, strength and homogeneity of lining concrete are predicted based on the changes of coring speed and electric current of drilling rig;through coring, the thickness and void depth of lining at tunnel vault can be detected. Finally a kind of core hole repairing technology was proposed.
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TAN Wen1 GONG Chengming2 SHE Hailong3 GENG Chunlei3
Keywords： Tunnel   Coring at tunnel vault   Detection of concrete   Repairing of coring hole   Lining thickness   Vault void     
Abstract： Because of the special position of tunnel vault, conventional water drill can′ t safely and effectively carry out coring. An intelligent device for coring at tunnel vault was developed, which eliminates the risks of motor burning and electric leakage caused by cooling water reflux. The device can intelligently identify the position of waterproof board to avoid the risk of breaking of waterproof board; in the process of coring, the compactness, strength and homogeneity of lining concrete are predicted based on the changes of coring speed and electric current of drilling rig;through coring, the thickness and void depth of lining at tunnel vault can be detected. Finally a kind of core hole repairing technology was proposed.
Keywords： Tunnel,   Coring at tunnel vault,   Detection of concrete,   Repairing of coring hole,   Lining thickness,   Vault void     
Cite this article:   
TAN Wen1 GONG Chengming2 SHE Hailong3 GENG Chunlei3 .An Intelligent Device for Coring at Tunnel Vault and Corresponding Coring Hole Repairing Technology[J]  MODERN TUNNELLING TECHNOLOGY, 2019,V56(5): 195-200
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http://www.xdsdjs.com/EN/      或     http://www.xdsdjs.com/EN/Y2019/V56/I5/195
　
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