Ground reaction due to tunnelling below groundwater table

Y. J. Shin, J. H. Shin, I. M. Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Tunnelling below the groundwater table influences the hydraulic regime in the surrounding ground. This will, in turn, cause seepage into the tunnel through the pores and discontinuities and often produces a long-term interaction between the tunnel and the ground. In this paper an attempt is made to identify the behavior of surrounding ground due to seepage, and ground reaction curves (GRC) considering seepage forces are presented for a tunnel under drainage conditions using an analytical method. It is found that the flow of groundwater has a significant effect on the radial displacement of a tunnel wall. While the effective overburden pressure is reduced by the arching effect during tunnel excavation, seepage forces still remain. Therefore, the presence of groundwater induces large radial displacement of the tunnel wall compared to dry conditions.

Original languageEnglish
Title of host publicationGeotechnical Aspects of Underground Construction in Soft Ground - Proceedings of the 6th International Symposium, IS-SHANGHAI 2008
Pages823-828
Number of pages6
Publication statusPublished - 2009 Dec 1
Event6th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, IS-SHANGHAI 2008 - Shanghai, China
Duration: 2008 Apr 102008 Apr 12

Publication series

NameGeotechnical Aspects of Underground Construction in Soft Ground - Proceedings of the 6th International Symposium, IS-SHANGHAI 2008

Other

Other6th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, IS-SHANGHAI 2008
CountryChina
CityShanghai
Period08/4/1008/4/12

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Civil and Structural Engineering
  • Building and Construction

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  • Cite this

    Shin, Y. J., Shin, J. H., & Lee, I. M. (2009). Ground reaction due to tunnelling below groundwater table. In Geotechnical Aspects of Underground Construction in Soft Ground - Proceedings of the 6th International Symposium, IS-SHANGHAI 2008 (pp. 823-828). (Geotechnical Aspects of Underground Construction in Soft Ground - Proceedings of the 6th International Symposium, IS-SHANGHAI 2008).