Effect of nearby undercrossing tunneling on the deformation of existing metro tunnel and construction control

被引：0
|
作者：
Zhang Qiong-fang [1 ,2 ]
Xia Tang-dai [1 ,2 ]
Ding Zhi [3 ]
Huang Xiao-bin [4 ]
Lin Cun-gang [5 ]
机构：
[1] Zhejiang Univ, MOE Key Lab Soft Soils & Geoenvironm Engn, Hangzhou 310058, Zhejiang, Peoples R China
[2] Zhejiang Univ, Res Ctr Coastal & Urban Geotech Engn, Hangzhou 310058, Zhejiang, Peoples R China
[3] Zhejiang Univ City Coll, Dept Civil Engn, Hangzhou 310015, Zhejiang, Peoples R China
[4] Hangzhou Hanggang Metro Co Ltd, Hangzhou 310017, Zhejiang, Peoples R China
[5] Ningbo Univ, Coll Civil Construct & Environm Engn, Ningbo 315211, Zhejiang, Peoples R China
来源：
ROCK AND SOIL MECHANICS | 2016年 / 37卷 / 12期
基金：
中国国家自然科学基金;
关键词：
shield tunneling below the existing tunnel; shield driving parameter; tunnel monitoring; deformation of existing tunnel;
D O I：
10.16285/j.rsm.2016.12.027
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Construction process of shield undercrossing the existing metro tunnel No. 1 is monitored. Based on monitored data, the heave/subsidence, horizontal and convergence displacement of the existing tunnel structure are analyzed with the change of the relative position of the shield machine to the existing tunnel. Shield driving parameters have been recorded during the tunneling process. The parameters of shield machine are optimized further through the feedback of line 1 monitoring results, and the existing tunnel deformation is controlled within the permitted value according to the reasonable set of shield parameters. Based on the deformation of built tunnel, it is found that the displacement of existing tunnel is negligible when the cross tunneling is more than 20 meters away. The shield process had a major impact on the left side of the existing tunnel. The results indicate that the displacement process of the interaction of existing tunnel and new tunnel can be divided into five phases.
引用
收藏
页码：3561 / 3568
页数：8
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