caa a22 4500 463174631 CHVBK 20180406164822.0 cr unu---uuuuu 170326e20070201xx s 000 0 eng 10.1007/s00603-006-0097-4 doi (NATIONALLICENCE)springer-10.1007/s00603-006-0097-4 Radial Deformations Induced by Groundwater Flow on Deep Circular Tunnels [Elektronische Daten] [S.-W. Nam, A. Bobet] Summary.: The magnitude and distribution of ground deformations around a tunnel are often monitored during construction and provide key information about ground-support interaction and ground behavior. Thus it is important to determine the effects of different parameters on ground deformations to accurately and effectively evaluate what contributes to ground and support behavior observed during excavation. This paper investigates one such relation: the effects of seepage on radial deformations. A number of numerical analyses have been conducted with the following assumptions: deep circular unsupported tunnel, elastic ground, isotropic far field stresses, dry ground or saturated ground with steady-state water seepage. The analyses cover a wide range of tunnel sizes, effective stresses, and pore pressures. Results from the numerical simulations confirm previous analytical solutions for normalized radial deformations behind the face (i.e. on the tunnel side of the face) of a tunnel excavated in dry ground, and have been used to propose a new analytical formulation for normalized radial displacements ahead and behind the tunnel face for both dry and saturated ground with water flow. Water seepage substantially increases the magnitude and distribution of the normalized radial deformations ahead of the face and at the tunnel face, but does not change much the displacement distribution behind the tunnel face. Springer-Verlag, 2006 Keywords: Deep tunnel, longitudinal deformation profile, groundwater, drainage, steady state nationallicence Nam S.-W School of Civil Engineering, Purdue University, West Lafayette, IN, U.S.A. aut Bobet A. School of Civil Engineering, Purdue University, West Lafayette, IN, U.S.A. aut Rock Mechanics and Rock Engineering Springer-Verlag 40/1(2007-02-01), 23-39 0723-2632 40:1<23 2007 40 603 https://doi.org/10.1007/s00603-006-0097-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00603-006-0097-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nam S.-W School of Civil Engineering, Purdue University, West Lafayette, IN, U.S.A aut NATIONALLICENCE 700 1- Bobet A. School of Civil Engineering, Purdue University, West Lafayette, IN, U.S.A aut NATIONALLICENCE 773 0- Rock Mechanics and Rock Engineering Springer-Verlag 40/1(2007-02-01), 23-39 0723-2632 40:1<23 2007 40 603 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer