Construction Technologies for Connection Galleries of Shieldbored Tunnels under Bad Geological Conditions

doi:10.3973/j.issn. 1672-741X.2012.z1.020

Tunnel Construction ›› 2012, Vol. 32 ›› Issue (增刊1): 95-98.DOI: 10.3973/j.issn. 1672-741X.2012.z1.020

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Construction Technologies for Connection Galleries of Shieldbored Tunnels under Bad Geological Conditions

ZHANG Jun

(China Railway First Group Co., Ltd., Guangzhou Branch, Guangzhou 510635, China)

Received:2012-07-28 Revised:2012-10-15 Online:2012-11-20 Published:2013-02-19

Abstract

Abstract:

The construction difficulties of connection galleries and waste water pump room are presented, with the construction of connection galleries of shieldbored tunnel on Yitian stationShixia station section of 3151 bid section of Shenzhen Metro as an example. Jet grouting reinforcement technology is replaced by fullface grouting reinforcement technology. The construction technology and technical key points of fullface grouting reinforcement technology are presented. The successful construction of connection galleries of shieldbored tunnel under bad geological conditions is guaranteed after construction program optimization.

Key words: tunnel, connection gallery, shieldbored tunnel section, grouting, support, secondary lining

ZHANG Jun. Construction Technologies for Connection Galleries of Shieldbored Tunnels under Bad Geological Conditions[J]. Tunnel Construction, 2012, 32(增刊1): 95-98.

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Construction Technologies for Connection Galleries of Shieldbored Tunnels under Bad Geological Conditions

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