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MODERN TUNNELLING TECHNOLOGY 2011, Vol. 48 Issue (2) :28-32    DOI:
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Discussion on Factors Affecting Large Deformations at Exit of MaoyushanTunnel
(Lanzhou-Chongqing Railway Co., Ltd., Lanzhou  730050)
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Abstract Considering the large deformations occurred at Maoyushan tunnel exit, construction control and deformations were classified, and the affecting factors for large deformations were discussed. Results indicated that high ground stresses and lithology were the main factors for deformation, while geologic structure was the secondary one. Deformation development can be effectively constrained by improving construction technology and enhancing support stiffness to assure tunnel construction safty.
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WANG Guang-Hong
Keywords：  Tunnel exit   Large deformation   Affecting factors   Control measures     
Abstract： Considering the large deformations occurred at Maoyushan tunnel exit, construction control and deformations were classified, and the affecting factors for large deformations were discussed. Results indicated that high ground stresses and lithology were the main factors for deformation, while geologic structure was the secondary one. Deformation development can be effectively constrained by improving construction technology and enhancing support stiffness to assure tunnel construction safty.
Keywords：  Tunnel exit,   Large deformation,   Affecting factors,   Control measures     
published: 2011-03-04
Cite this article:   
WANG Guang-Hong .Discussion on Factors Affecting Large Deformations at Exit of MaoyushanTunnel[J]  MODERN TUNNELLING TECHNOLOGY, 2011,V48(2): 28-32
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http://www.xdsdjs.com/EN/      或     http://www.xdsdjs.com/EN/Y2011/V48/I2/28
　
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