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 language | English |
|---|---|
| Title of host publication | Geotechnical Aspects of Underground Construction in Soft Ground - Proceedings of the 6th International Symposium, IS-SHANGHAI 2008 |
| Pages | 823-828 |
| Number of pages | 6 |
| Publication status | Published - 2009 Dec 1 |
| Event | 6th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, IS-SHANGHAI 2008 - Shanghai, China Duration: 2008 Apr 10 → 2008 Apr 12 |
Other
| Other | 6th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, IS-SHANGHAI 2008 |
|---|---|
| Country | China |
| City | Shanghai |
| Period | 08/4/10 → 08/4/12 |
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ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology
- Civil and Structural Engineering
- Building and Construction
Cite this
Ground reaction due to tunnelling below groundwater table. / Shin, Y. J.; Shin, J. H.; Lee, In Mo.
Geotechnical Aspects of Underground Construction in Soft Ground - Proceedings of the 6th International Symposium, IS-SHANGHAI 2008. 2009. p. 823-828.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Ground reaction due to tunnelling below groundwater table
AU - Shin, Y. J.
AU - Shin, J. H.
AU - Lee, In Mo
PY - 2009/12/1
Y1 - 2009/12/1
N2 - 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.
AB - 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=79952298367&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:79952298367
SN - 9780415484756
SP - 823
EP - 828
BT - Geotechnical Aspects of Underground Construction in Soft Ground - Proceedings of the 6th International Symposium, IS-SHANGHAI 2008
ER -