Class A prediction of a mine-by test in an overconsolidated mudstone
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Document typeConference report
Defense date2009
PublisherAEDIFICATIO PUBLISHERS
Rights accessRestricted access - publisher's policy
Abstract
In this paper, 3D HM computations are performed to predict the rock response during
the excavation of a new gallery (mine-by test) realized in Opalinus clay at the Mont-
Terri laboratory, Switzerland. In a first part, previous mine-by tests in similar
materials are reviewed: the CLIPEX experiment in Mol (Belgium, Boom clay), the
MODEX-REP experiment in Meuse Haute Marne laboratory (France, Callovo-Oxfordian Clay) and the ED-B at Mont Terri (Switzerland, Opalinus Clay).
Possible relevant processes are identified. Secondly, the hydro-mechanical formulation used to reproduce the test is described. Thirdly, a 3D HM model adapted to the investigated mine-by test is set up. This model accounts for the anisotropy of the initial stress state and hydro-mechanical material properties (stiffness and permeability). Finally, the influence of anisotropy of stress state and stiffness are investigated by means of a sensitivity analysis.
CitationGaritte, B. [et al.]. Class A prediction of a mine-by test in an overconsolidated mudstone. A: International Conference on Computational Methods in Tunnelling. "2nd International Conference on Computational Methods in Tunnelling". Bochum: AEDIFICATIO PUBLISHERS, 2009, p. 457-463.
ISBN978-3-931681-93-7
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