Modelling fluid flow in opalinus clay excavation damage zone: a semi-analytical approach
Visualitza/Obre
2015_alcoverro_Geological Society, London, Special Publications-2015-Alcoverro-143-66.pdf (1,720Mb) (Accés restringit)
Sol·licita una còpia a l'autor
Què és aquest botó?
Aquest botó permet demanar una còpia d'un document restringit a l'autor. Es mostra quan:
- Disposem del correu electrònic de l'autor
- El document té una mida inferior a 20 Mb
- Es tracta d'un document d'accés restringit per decisió de l'autor o d'un document d'accés restringit per política de l'editorial
Cita com:
hdl:2117/83322
Tipus de documentArticle
Data publicació2014-12
Condicions d'accésAccés restringit per política de l'editorial
Tots els drets reservats. Aquesta obra està protegida pels drets de propietat intel·lectual i
industrial corresponents. Sense perjudici de les exempcions legals existents, queda prohibida la seva
reproducció, distribució, comunicació pública o transformació sense l'autorització del titular dels drets
Abstract
The HG-A in situ test, located at the Mont Terri Underground Rock Laboratory (URL), was analysed as part of the FORGE project. This test investigated the behaviour of the excavation damage zone (EDZ) around a backfilled microtunnel by a series of water- and gas-injection tests. Prior to testing, the backfilled microtunnel was sealed with a hydraulic megapacker system. A key aspect was the investigation of crack opening and closure along the EDZ in response to water and gas injections in the context of radioactive waste disposal. In the model, the intrinsic permeability of the EDZ was assumed to depend on deformation, and additional simplifying assumptions were considered: axisymmetry about the tunnel axis; no gravity; soil slices orthogonal to the tunnel axis move independently and in plane strain; liquid and gas flows along the EDZ parallel to the tunnel axis; and undrained saturated conditions for the Opalinus Clay. As a result, the field equations were reduced to differential equations for liquid and gas pressures defined in a one-dimensional (1D) domain representing the EDZ. The main trends of the pressure evolution observed in the test section were reproduced. A 2D axisymmetric model confirmed the validity of the simplifying assumptions, except for small zones of the EDZ near the megapacker ends.
CitacióAlcoverro, J., Olivella, S., Alonso, E. Modelling fluid flow in opalinus clay excavation damage zone: a semi-analytical approach. "Geological Society, London, special publications (Print)", Desembre 2014, vol. 415, p. 143-166.
ISSN0305-8719
Versió de l'editorhttp://sp.lyellcollection.org/content/415/1/143.abstract
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
2015_alcoverro_ ... -2015-Alcoverro-143-66.pdf | 1,720Mb | Accés restringit |