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MODERN TUNNELLING TECHNOLOGY 2021, Vol. 58 Issue (2) :118-126    DOI:
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Comparison and Selection of Construction Methods for Changsha-Ganzhou High-speed Railway Tunnel Section Adjacent to the Runway of Huanghua Airport
(1 China Railway Siyuan Survey and Design Group Co., Ltd., Wuhan 430063; 2 National-Local Joint Engineering Research Center of Underwater Tunnelling Technology, Wuhan 430063)
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Abstract For the Changsha-Ganzhou High-speed Railway tunnel section adjacent to the runway of Huanghua Airport, strict surface settlement control is required during construction. In this paper, aiming at four common construction methods such as mined construction method, shield method, pipe-roof method and pipe jacking method,the calculation results of the stress of surrounding rock mass, the development of plastic zone and the surface settlement variation during the tunnel construction are compared and analyzed through numerical simulation analysis.The result shows that the surface settlement caused by the mined construction method is the largest with the value more than 2 cm, which has a great impact on the tunnel and surface buildings; regarding the shield method, the pipe roof method and the pipe jacking method, the excavation-induced settlement can be effectively controlled below 5mm, meeting the tunnel construction and airport operation safety requirements. Considering the factors such as cost and technical conditions, the pipe roof method is finally recommended for the construction of this tunnel section.
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YANG Jian1
2
Keywords： Tunnel   Adjacent construction   Settlement   Mined method   Shield method   Pipe roof method   Pipe jack? ing method   Scheme comparison and selection   Numerical simulation     
Abstract： For the Changsha-Ganzhou High-speed Railway tunnel section adjacent to the runway of Huanghua Airport, strict surface settlement control is required during construction. In this paper, aiming at four common construction methods such as mined construction method, shield method, pipe-roof method and pipe jacking method,the calculation results of the stress of surrounding rock mass, the development of plastic zone and the surface settlement variation during the tunnel construction are compared and analyzed through numerical simulation analysis.The result shows that the surface settlement caused by the mined construction method is the largest with the value more than 2 cm, which has a great impact on the tunnel and surface buildings; regarding the shield method, the pipe roof method and the pipe jacking method, the excavation-induced settlement can be effectively controlled below 5mm, meeting the tunnel construction and airport operation safety requirements. Considering the factors such as cost and technical conditions, the pipe roof method is finally recommended for the construction of this tunnel section.
Keywords： Tunnel,   Adjacent construction,   Settlement,   Mined method,   Shield method,   Pipe roof method,   Pipe jack? ing method,   Scheme comparison and selection,   Numerical simulation     
Cite this article:   
YANG Jian1, 2 .Comparison and Selection of Construction Methods for Changsha-Ganzhou High-speed Railway Tunnel Section Adjacent to the Runway of Huanghua Airport[J]  MODERN TUNNELLING TECHNOLOGY, 2021,V58(2): 118-126
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