Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1007/s12665-013-2403-2
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Titel (primär) Analysis of flow path around the sealing section HG-A experiment in the Mont Terri Rock Laboratory
Autor Xu, W.; Shao, H.; Marschall, P.; Hesser, J.; Kolditz, O. ORCID logo
Quelle Environmental Earth Sciences
Erscheinungsjahr 2013
Department ENVINF
Band/Volume 70
Heft 7
Seite von 3363
Seite bis 3380
Sprache englisch
Keywords H2M coupling;Anisotropy; In situ injection experiment; Mont Terri Rock Laboratory; EDZ
UFZ Querschnittsthemen RU5;

As part of the HG-A experiment in the Mont Terri Rock Laboratory, large-scale in situ water/gas injection experiments was conducted in a microtunnel. This research work focuses on the numerical analysis of the experimental data and the in situ observations. Concerning a temporary change of the hydromechanical properties of Opalinus Clay during experimental operations, three phases were numerically interpreted. These included the generation of excavation damaged zone during tunnel excavation, in which highly permeable flow paths around the tunnel have been formed; the self-sealing effect during water tests; and the pressure evolution during a long-term gas injection test. A coupled two-phase flow and mechanics model, taking into account the strong anisotropic properties of Opalinus Clay, was developed to interpret the measured data. The hydraulic anisotropy was described by a transversely isotropic permeability tensor. An elasto-plastic model was established to consider both stiffness anisotropy and strength anisotropy. Anisotropic plasticity was studied using the microstructure tensor method.

dauerhafte UFZ-Verlinkung
Xu, W., Shao, H., Marschall, P., Hesser, J., Kolditz, O. (2013):
Analysis of flow path around the sealing section HG-A experiment in the Mont Terri Rock Laboratory
Environ. Earth Sci. 70 (7), 3363 - 3380 10.1007/s12665-013-2403-2