ISSN 2096-4498
CN 44-1745/U
Tunnel Construction ›› 2015, Vol. 35 ›› Issue (1): 83-88.DOI: 10.3973/j.issn.1672-741X.2015.01.014
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WANG Yue, SHI Jiyao
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Abstract:
The regularity of the deformation of the junction sections of tunnels in No. 14 bid section of BaojiLanzhou passenger dedicated line is studied on basis of the monitoring results, so as to improve the construction safety of critical positions of large crosssection loess tunnels. It is concluded that the intermediate bench excavation and the invert casting are critical points in terms of deformation development and deformation control. Furthermore, the maximum deformation of the junction section of No. 3 inclined shaft of Guchengling tunnel is predicted on basis of the study results, and the excavation method is optimized accordingly. In the end, the deformation of the mentioned junction section has been well controlled.
Key words: large crosssection loess tunnel, BaojiLanzhou passenger dedicated line, monitoring, junction section, early deformation, excavation optimization
CLC Number:
U 455.49
WANG Yue, SHI Jiyao. Early Deformation Analysis and Excavation Optimization of Junction Sections of Large Crosssection Loess Tunnels[J]. Tunnel Construction, 2015, 35(1): 83-88.
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