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MODERN TUNNELLING TECHNOLOGY 2011, Vol. 48 Issue (2) :33-36    DOI:
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Analysis on Factors Affecting the Deformations of No.7 Inclined Shaft in Muzhailing Tunnel
(1 China Railway No.4 Survey, Design & Research Institute Group Co., Ltd., Wuhan  430063;
2 Lanzhou-Chongqing Railway Co., Ltd., Lanzhou  730050)
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Abstract  In view of the large deformations of No.7 inclined shaft in Muzhailing tunnel on Lanzhou-Chongqing railway, construction control methods and deformations were classified and  the factors affecting the large deformation were discussed. Results indicated that high ground stresses and geological lithology were the main factors of deformation and geological structure was the subordinate one. The deformation development can be restrained effectively and the safety can be ensured by improving the construction technology and support rigidity, providing basis for the main tunnel construction.
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LI Feng-1
WANG Guang-Hong- 2
Liu-Hong-2
Keywords：  Large deformation   High ground stress   Geological lithology   Inclined shaft     
Abstract：  In view of the large deformations of No.7 inclined shaft in Muzhailing tunnel on Lanzhou-Chongqing railway, construction control methods and deformations were classified and  the factors affecting the large deformation were discussed. Results indicated that high ground stresses and geological lithology were the main factors of deformation and geological structure was the subordinate one. The deformation development can be restrained effectively and the safety can be ensured by improving the construction technology and support rigidity, providing basis for the main tunnel construction.
Keywords：  Large deformation,   High ground stress,   Geological lithology,   Inclined shaft     
published: 2011-03-04
Cite this article:   
LI Feng-1, WANG Guang-Hong- 2, Liu-Hong-2 .Analysis on Factors Affecting the Deformations of No.7 Inclined Shaft in Muzhailing Tunnel[J]  MODERN TUNNELLING TECHNOLOGY, 2011,V48(2): 33-36
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