Hydraulic response to a shaft excavation in Callovo-Oxfordian clay
Document typeConference report
PublisherCentro Internacional de Métodos Numéricos en Ingeniería (CIMNE)
Rights accessOpen Access
This document presents a coupled hydro-mechanical (HM) numerical analysis,using Code_Bright, simulating the excavation of the main access shaft to the underground laboratory of Bure (France) in Callovo-Oxfordian Clay. The work consists in the description of the HM formulation using a specially developed constitutive law and in the discussion of the simulation results. The mechanisms at the origin of the water pressure response are analysed with special emphasis on the influence of the mechanical and hydraulic boundary conditions used for the shaft excavation. Shaft convergence and permeability evolution measured by ANDRA (Modex-REP mine-by-test, [1,2]) during the shaft excavation are compared with the modelling results to illustrate the model capability to reproduce excavation induced damage and to relate it to permeability increase.
CitationGaritte, B. [et al.]. Hydraulic response to a shaft excavation in Callovo-Oxfordian clay. A: International Conference on Computational Methods for Coupled Problems in Science and Engineering. "III International Conference on Computational Methods for Coupled Problems in Science and Engineering". Ischia: Centro Internacional de Métodos Numéricos en Ingeniería (CIMNE), 2009, p. 1-4.
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