Comptes Rendus
Analytical study of the post-closure behaviour of a deep tunnel in a porous creeping rock mass
Comptes Rendus. Mécanique, Volume 344 (2016) no. 9, pp. 649-660.

The deferred behaviour of underground cavities is often encountered in geotechnical engineering. This paper presents an analytical approach for the post-closure behaviour of a deep tunnel inside a rock mass considering both creep and hydromechanical couplings. Creep, supposed slower than hydraulic flow, is described by a linear Norton–Hoff law in the particular case of an elastically incompressible rock mass (i.e. Poisson's ratio ν=0.5). The resolution uses Laplace transform and Stehfest's algorithm. Numerical examples are carried out to enlighten the hydromechanical responses around the tunnel and to show the consistency of the solution.

Received:
Accepted:
Published online:
DOI: 10.1016/j.crme.2016.05.003
Keywords: Viscoplastic creep, Hydromechanical coupling, Analytical approach, Deep tunnel, Laplace transform, Stehfest's inversion

Frédéric Deleruyelle 1; Tuan Anh Bui 2; Henry Wong 2; Nathalie Dufour 3; Duc Kien Tran 4; X.S. Zhang 5

1 IRSN/PRP-DGE/SEDRAN/B4S, Fontenay-aux-Roses, France
2 Université de Lyon, ENTPE/LGCB and LTDS UMR CNRS 5513, Vaulx-en-Velin, France
3 CEREMA – DTerMed, Aix-en-Provence, France
4 Université de Lyon, ECL/LTDS UMR CNRS 5513, Écully, France
5 Institute of Resources and Environment, North China University of Water Resources and Electric Power, Zhengzhou, China
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Frédéric Deleruyelle; Tuan Anh Bui; Henry Wong; Nathalie Dufour; Duc Kien Tran; X.S. Zhang. Analytical study of the post-closure behaviour of a deep tunnel in a porous creeping rock mass. Comptes Rendus. Mécanique, Volume 344 (2016) no. 9, pp. 649-660. doi : 10.1016/j.crme.2016.05.003. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2016.05.003/

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