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| Analyses of the Displacement Caused by Shield Construction |
| WANG Yu-hua1，LI Hai - min2，WANG Li-jun2 |
| 1.China Railway Tunnel Group Co. Ltd, Luoyang, Henan 471009，China; 2. China Railway Tunnel Stock Co. Ltd,Xinxiang, Henan 453000, China |
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Abstract Research purposes : The scale of the displacement is essential to the successful construction of tunnel in city. The boring parameters should be decided rationally through making analyses of the stratum stress change, soil loss and deformation of pipe lining caused by shield construction for the purposes of establishing effective soil pressure balance, reducing the disturbance，stratum and stratum loss, and guaranteeing construction safety.
Research Conclusions:Taking the shield construction of bidding 19 of Line 4 of Beijing metro as an example, this paper analyzes the stratum stress change caused by the excavation and the displacement caused by stratum loss with the monitoring and measurement on the site. The results of analysis and measurement show the deformations can be controlled in the prescribed limit if the parameters of soil pressure, synchronic grouting and boring speed are decided rationally and an effective soil pressure balance is established.
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Received: 30 August 2008
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[1] GB 50299-1999，地下铁道工程施工及验收规范[S].
[2] 尹旅超，朱振宏，李玉珍，等.日本隧道盾构新技术[M]. 武汉:华中理工大学出版社，1999.
[3] 中铁西南科学研究院信息研究室.译.盾构隧道新技术 [M].成都:中铁西南科学研究院信息研究室，2001.
[4] 施仲衡.地下铁道设计与施工[M].西安:陕西科学技术 出版社，1997.
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2008, Vol. 25 
