Three-Dimensional Analysis of Excavating Face Stability Supported by Pipe Roof

Abstract:

This paper analyzes the load transfer characteristics of pipe roof over the excavating face, and the analytical solution of tunnel face stability is established by the method of three-dimensional analysis. Through the calculation of the load transfer of the pipe roof, it indicates that the released load of excavation is passed to the supporting structure and soil which is not excavated by the effect of the pipe roof, and the magnitude of load and coverage of impact are in connection with excavating footage as well as subgrade reaction. The three-dimensional analytical solution of tunnel face stability is used to analyze a project case of Airport Road underpass in Hangzhou. The results show that the tunnel face stability is not guaranteed when excavated on a large section while the stability is enhanced when excavated on separated pilot headings.

• Periodical: Applied Mechanics and Materials (Volumes 275-277)
• Pages: 1257-1263
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.275-277.1257
• Online since: January 2013
• Authors: Xiang Yuan, Shun Hua Zhou, Quan Mei Gong
• Keywords: Pipe Roof, Soil mechanics, Stability, Three-Dimensional Analysis, Tunnel Face

References

[1] Shunhua Zhou. Chinese Journal of Rock Mechanics and Engineering Vol. 24 (2005), pp.526-531 (In Chinese).

[2] Shunhua Zhou. Chinese Journal of Rock Mechanics and Engineering Vol. 24 (2005), pp.2565-2570 (In Chinese).

[3] MiwaM. Tunneling and Underground Space Technology Vol. 20 (2005), pp.121-127 (In Chinese).

[4] Huojun Xing. Chinese Journal of Rock Mechanics and Engineering Vol. 18 (1999), pp.1059-1061 (In Chinese).

[5] Lizhong Wang. Chinese Journal of Rock Mechanics and Engineering, Vol. 22 (2003), pp.589-595 (In Chinese).

[6] Mingfeng Lei. Chinese Journal of Rock Mechanics and Engineering Vol. 28 (2009), pp.3571-3576 (In Chinese).

[7] Jian She. Chinese Journal of Rock Mechanics and Engineering Vol. 25 (2006), pp.623-629 (In Chinese).

[8] Xiaofeng Zhang. Structure Science Vol. 23 (2007), pp.51-53 (In Chinese).

[9] Hongliang Rock and Soil Mechanics Vol. 23 (2002), pp.649-653 (In Chinese).