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MODERN TUNNELLING TECHNOLOGY 2014, Vol. 51 Issue (5) :161-173    DOI:
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Numerical Analysis of Shield Tunneling Under an Electric Power Tunnel in Sandy Strata of Zhengzhou
(Shanghai Tunnel Engineering Co. Ltd., Shanghai 200082)
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Abstract  Based on a shield tunnel of the Zhengzhou metro that passes under an electric power tunnel, a numerical simulation analysis was carried out by ABAQUS software and the settlement laws of the ground surface and the electric power tunnel were researched, as well as shield tunnel construction in sandy strata. The results show that: the maximum ground surface settlement that occurred at the middle of the two tunnels is about 12mm, while the maximum ground settlement of the electric power tunnel, occurring at the intersection of the two tunnels, is about 15mm, all of which are within an allowable range. Thus, it is concluded that the settlements are both controlled by targeted construction measures, which ensure the security of electric power tunnel.
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ZHANG Lu-Gen
Keywords： Metro tunnel   Shield method   Passing under an existing tunnel   Numerical simulation   Settlement control     
Abstract： Based on a shield tunnel of the Zhengzhou metro that passes under an electric power tunnel, a numerical simulation analysis was carried out by ABAQUS software and the settlement laws of the ground surface and the electric power tunnel were researched, as well as shield tunnel construction in sandy strata. The results show that: the maximum ground surface settlement that occurred at the middle of the two tunnels is about 12mm, while the maximum ground settlement of the electric power tunnel, occurring at the intersection of the two tunnels, is about 15mm, all of which are within an allowable range. Thus, it is concluded that the settlements are both controlled by targeted construction measures, which ensure the security of electric power tunnel.
Keywords： Metro tunnel,   Shield method,   Passing under an existing tunnel,   Numerical simulation,   Settlement control     
published: 2014-08-14
Cite this article:   
ZHANG Lu-Gen .Numerical Analysis of Shield Tunneling Under an Electric Power Tunnel in Sandy Strata of Zhengzhou [J]  MODERN TUNNELLING TECHNOLOGY, 2014,V51(5): 161-173
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http://www.xdsdjs.com/EN/      或     http://www.xdsdjs.com/EN/Y2014/V51/I5/161
　
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