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Tunnel deformation characteristics based on on-site monitoring data |
FANG Qian1,SU Wei1,2,ZHANG Dingli1,YU Fucai1 |
(1. Tunnel and Underground Engineering Research Center of Ministry of Education,Beijing Jiaotong University,Beijing 100044,China;2. China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu,Sichuan 610031,China) |
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Abstract The deformation of tunnel is an important parameter indicating the stability of the tunnel. The roof settlement data of 836 tunnels and 806 sets of horizontal convergence data reported from 103 tunnels were collected for statistical analysis. The ground deformation surround the tunnel,the duration of the deformation and their relations with the surrounding rock classification and excavation area were systematically studied. The ground deformation surrounding tunnel was mainly concentrated in the low value zone. With the deterioration of the surrounding rock,the tunnel deformation increases and more deformation data can be observed from the high value zone. With the increase of the tunnel excavation area,the tunnel deformation value increases distinctly. It was noted that there was no obvious relationship between the tunnel deformation and the overburden depth. The duration of the tunnel deformation was mainly concentrated in the low value zone,which increases with the deterioration of the surrounding ground. The magnitudes of tunnel deformation and the lasting time of deformation for different ground types were proposed in the study.
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[1] |
徐干成,乔春生,刘保国,等. 富溪双连拱隧道围岩强度及稳定性评价[J]. 岩土工程学报,2009,31(2):259-264.(XU Gancheng,QIAO Chunsheng,LIU Baoguo,et al. Estimation of strength and stability of surrounding rock mass for Fuxi double-arch tunnel[J]. Chinese Journal of Ceotechnical Engineering,2009,31(2):259-264.(in Chinese))
|
[2] |
高 科,李夕兵. 等效数值法在围岩稳定性评价中的应用[J]. 南华大学学报:自然科学版,2009,23(2):18-21.(GAO Ke,LI Xibing. Evaluation on stability of surrounding rock mass based on equivalent numerical method[J]. Journal of University of South China:Natural Science,2009,23(2):18-21.(in Chinese))
|
[3] |
刘 高. 高地应力区结构性流变围岩稳定性研究[博士学位论文][D]. 成都:成都理工大学,2002.(LIU Gao. Stability study on surrounding rock with structural rheology in high stress area[Ph. D. Thesis][D]. Chengdu:Chengdu University of Technology,2002.(in Chinese))
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