ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2013, Vol. 33 ›› Issue (7): 579-585.DOI: 10.3973/j.issn.1672-741X.2013.07.009
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GUAN Linxing
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Abstract:
The difficulties in the design of waterconveying shield tunnels are discussed, with a waterconveying shield tunnel in Nanchang as an example. The loading of the waterconveying shield tunnel is analyzed and the design of the tunnel is described. Main study contents and conclusions drawn are as follows: 1) The design of the alignment, longitudinal profile, segments and shield receiving shaft of the tunnel are studied on basis of the geological conditions. 2) The major difference among waterconveying shield tunnels, highway shield tunnels and railway shield tunnels is that waterconveying shield tunnels have internal water pressure. The difficulty in the design of waterconveying shield tunnels is how to determine the internal water pressure. 3) The maximum ground water level, the minimum ground water level, the usual internal water pressure and the unusual internal water pressure need to be considered in the design of waterconveying shield tunnels. In this way, the internal force envelope diagram of the tunnel is achieved and the steel bar arrangement is worked out, so as to achieve safe and economic design. 4) The waterconveying shield tunnel crossing Ganjiang river in Nanchang is one of the few waterconveying shield tunnels located in rocks built in China, which provides a solution for the construction of smalldiameter waterconveying tunnels in the future.
Key words: rivercrossing waterconveying tunnel, shield, alignment, longitudinal profile, segment, waterproofing, shield receiving shaft, ground improvement at shield receiving shaft
GUAN Linxing. Design of Waterconveying Shield Tunnel Crossing Ganjiang River[J]. Tunnel Construction, 2013, 33(7): 579-585.
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URL: http://www.suidaojs.com/EN/10.3973/j.issn.1672-741X.2013.07.009
http://www.suidaojs.com/EN/Y2013/V33/I7/579
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