The ground reaction curve due to tunnelling under drainage condition

Young Jin Shin, Byoung Min Kim, Shin In Han, In Mo Lee, Daehyeon Kim

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

Abstract

When a tunnel is excavated below the groundwater table, water flows into the excavated wall of tunnel and seepage forces are acting on the tunnel wall. Such seepage forces significantly affect the ground behavior. The ground response to tunnelling is understood theoretically by the convergence- confinement method, which consists of three elements: longitudinal deformation profile, ground reaction curve, and support characteristic curve. The seepage forces are likely to have a strong influence on the ground reaction curve which is defined as the relationship between internal pressure and radial displacement of the tunnel wall. In this paper, seepage forces arising from the ground water flow into a tunnel were estimated quantitatively. Magnitude of seepage forces was determined based on hydraulic gradient distribution around tunnel. To estimate seepage forces, different cover depths and groundwater table levels were considered. Using these results, the theoretical solutions for the ground reaction curve (GRC) with consideration of seepage forces under steady-state flow were derived. Copyright ASCE 2008.

Original languageEnglish
Title of host publicationProceedings of session of GeoCongress 2008 - GeoCongress 2008
Subtitle of host publicationGeosustainability and Geohazard Mitigation, GSP 178
Pages394-401
Number of pages8
Edition178
DOIs
Publication statusPublished - 2008
EventGeoCongress 2008: Geosustainability and Geohazard Mitigation - New Orleans, LA, United States
Duration: 2008 Mar 92008 Mar 12

Publication series

NameGeotechnical Special Publication
Number178
ISSN (Print)0895-0563

Other

OtherGeoCongress 2008: Geosustainability and Geohazard Mitigation
CountryUnited States
CityNew Orleans, LA
Period08/3/908/3/12

ASJC Scopus subject areas

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

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