Study on Control of Concrete Backfilling Amount of Secondary Lining of  Largedeformation Softrock Tunnels

doi:10.3973/j.issn.1672-741X.2013.08.007

Tunnel Construction ›› 2013, Vol. 33 ›› Issue (8): 664-667.DOI: 10.3973/j.issn.1672-741X.2013.08.007

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Study on Control of Concrete Backfilling Amount of Secondary Lining of  Largedeformation Softrock Tunnels

JI Yanbo

(China Railway Tunnel Group Co., Ltd., Luoyang 471009, Henan, China)

Received:2013-02-26 Revised:2013-05-28 Online:2013-08-20 Published:2013-08-23

Abstract

Abstract:

The design of the primary support of the largedeformation softrock section of Tongzhai tunnel on LanzhouChongqing railway is optimized on basis of studies on the deformation rules of the primary support in typical sections. Due to the optimization of the design, the concrete backfilling amount has been brought under effective control and the construction cost has been reduced. 

Key words: LanzhouChongqing railway, Tongzhai tunnel, soft rock, large deformation, primary support, reserved deformation, concrete backfilling amount

JI Yanbo. Study on Control of Concrete Backfilling Amount of Secondary Lining of  Largedeformation Softrock Tunnels[J]. Tunnel Construction, 2013, 33(8): 664-667.

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Study on Control of Concrete Backfilling Amount of Secondary Lining of  Largedeformation Softrock Tunnels

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