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Seepage flow around tunnels in swelling rock
Author(s) -
Anagnostou G.
Publication year - 1995
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.1610191004
Subject(s) - geotechnical engineering , constitutive equation , geology , swelling , flow (mathematics) , deformation (meteorology) , mechanics , boundary value problem , materials science , finite element method , engineering , structural engineering , mathematics , composite material , physics , mathematical analysis , oceanography
Abstract The swelling phenomenon in tunneling is numerically modelled as a coupled hydraulic‐mechanical process. The present communication focuses on the significance of the constitutive seepage flow equations, as well as on the importance of the hydraulic boundary conditions. The observed absence of swelling deformations at the tunnel walls and the crown can be explained as a consequence of varying hydraulic boundary conditions along the excavation boundary. According to the presented numerical results, the non‐linearity of the unsaturated flow equations has a decisive qualitative influence on the predicted deformation field.