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| Application on Ground Reinforcement Method of Launching Shaft for Shield Tunnel |
| WANG Tian-ming，DAI Zhi-ren |
| China Railway First Survey&Design Institute Group Co. Ltd，Xi' an，Shanxi 710043，China |
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Abstract Research purposes:Shield launching and receiving is one of the most important process during shield tunneling. Large investment and high risk will be encountered in ground reinforcement for shield launching shaft，and engineering accidents also frequently happen due to insufficient reinforcement. Therefore，the reinforcement method and its relevant range should be made clear based on kinds of geological conditions and reinforcement requirements，and some specific construction method should also be put forward in some specific construction conditions.
Research conclusions:From the study，it is concluded:(1)The longitudinal reinforcement length should be the sum of shield length and 1-2 times of segment width which is determined by soil stability and watertightness. The reinforcement length which is determined by soil stability is only 3-4 m. ( 2 ) The limitation of hinge plate with sealing rubber sheet is put forward due to rubber aging and the relatively lower sealing pressure，and also the box sealing device is applied in slurry shield project due to the relatevily higher sealing pressure and reliable performance.(3)The advantages of shield airtight launching device on risk control, construction period guarantee，and environment protection are made clear.(4)The shield airtight launching device can be adopted in all types of shield launching project especially for strict control requirement of surrounding environment and no pipeline movement.
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Received: 05 May 2014
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[1]戴志仁，张心旷.上海某地铁盾构隧道进出洞地基加固处理[J].施工技术，2008( 11 ):103 -105.
Dai Zhiren， Zhang Xinkuang. Ground Reinforcement for Shield Construction of Some Subway Station in Shanghai [ J ]. Construction Technology，2008 ( 11 )： 103-105.
[2]张凤祥，朱合华，傅德明.盾构隧道[M].北京：人民交通出版社，2004.
Zhang Fengxiang， Zhu Hehua， Fu Deming. Shield Tunnel [ M ]. Beijing ： China Communications Press， 2004.
[3]张庆贺，唐益群，杨林德.隧道建设盾构进出洞施工技术研究[J].地下空间，1994(2);110一119.
Zhang Qinghe, Tang Yiqun, Yang Linde. Study of the Construction Technologies for Shield Launching and Receiving in Tunnel Construction[J].Underground Space,1994(2);110一119.
[4]李大勇，王晖，王腾.盾构机始发与到达端头土体加固分析[J].铁道工程学报，2006(1);87一90.
Li Dayong, Wang Hui, Wang Teng. Analysis of Soil Reinforcement for the Starting and Arriving of Shield Machine in Metro Construction[J].Journal of Railway Engineering Society, 2006 (1) ; 87一90.
[5]赵峻.盾构进出洞施工关键技术[J].上海建设科技， 2008(5);62一65.
Zhao Jun. Key Techniques for Shield Launching and Receiving[ J].Shanghai Construction Technology,2008 (5) ;62一65.
[6]李飞，凌波.盾构到达接收辅助装置的设计[J].建筑机械化2009(9):66一68.
Li Fei, Ling Bo. Design of an Accessorial Equipment Used for the Arrival of a Shield in Metro Engineering [J].Construction Mechanization,2009(9) ;66一68.
[7]王梦恕，等.中国隧道与地下工程修建技术[M].北京: 人民交通出版社，2010.
Wang Mengshu, etc. Tunneling and Underground Engineering Technology in China[M].Beijing; China Communications Press,2010.
[8]Yun Bai, Zhiren Dai, Shaoming Liao and Yaoyao Fan. The Risks and Countermeasures of Shield Launching and Receiving in Soft Soil. ITA. AITES 2010 Word Tunnel Congress(May 14一20, Vancouver, Canada).
[9]白云，汤竟.软土地下工程的风险管理[J].地下空间与 工程学报，2006(1);21一28.
Bai Yun, Tang Jing. Risk Management for Underground Project in Soft Soils [ J].Chinese Journal of Underground Space and Engineering,2006(1):21一 28.
[10]中铁第一勘察设计院集团有限公司.南宁市城市轨道交 通1号线一期工程施工图设计[R].西安:中铁第一勘察 设计院集团有限公司，2013.
China Railway First Survey&Design Institute Group Co. Ltd. The Detailed Design of Nanning Metro Line 1 at the First Stage[R].Xi' an; China Railway First Survey&Design Institute Group Co. Ltd,2013.
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2014, Vol. 31 
