Key Technologies for Investigation, Design and Treatment of Submarine Karst Shield Tunnel: a Case Study of Railway StationSuoyu Station Submarine Tunnel on Dalian Metro Line 5

doi:10.3973/j.issn.2096-4498.2018.11.011

Tunnel Construction ›› 2018, Vol. 38 ›› Issue (11): 1830-1835.DOI: 10.3973/j.issn.2096-4498.2018.11.011

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Key Technologies for Investigation, Design and Treatment of Submarine Karst Shield Tunnel: a Case Study of Railway StationSuoyu Station Submarine Tunnel on Dalian Metro Line 5

ZHOU Huagui¹， HE Yitao²

(1. China Railway Liuyuan Group Co., Ltd., Tianjin 300308, China; 2. CCCC Rail Transit Consultants Co., Ltd., Wuhan 430056, Hubei, China）

Received:2018-04-12 Revised:2018-08-09 Online:2018-11-20 Published:2018-12-02

Abstract

Abstract:

The exploration and design of tunnel in the submarine karst area are difficult and the construction risk is high. Hence, the crosshole CT geophysical prospecting + drilling method is adopted for the first time in largediameter submarine karst shield tunnel on Dalian Metro Line 5. And then the reinforcement range of the tunnel is determined by finite element method; the reinforcement standard of karst tunnel foundation is determined by antifloating calculation; and a specific implementation scheme of submarine karst pretreatment and the specific design scheme of shield construction are put forward. In this way, a whole set of exploration, design and treatment scheme of submarine karst shield tunnel is formed.

Key words: submarine tunnel, shield tunnel, karst, karst prospecting, karst treatment, shield design, crosshole CT geophysical exploration + drilling

CLC Number:

U 452

ZHOU Huagui， HE Yitao. Key Technologies for Investigation, Design and Treatment of Submarine Karst Shield Tunnel: a Case Study of Railway StationSuoyu Station Submarine Tunnel on Dalian Metro Line 5[J]. Tunnel Construction, 2018, 38(11): 1830-1835.

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Key Technologies for Investigation, Design and Treatment of Submarine Karst Shield Tunnel: a Case Study of Railway StationSuoyu Station Submarine Tunnel on Dalian Metro Line 5

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