At the Mont Terri Rock Laboratory, research is undertaken to examine the suitability of the Opalinus Clay as a potential host rock for the deep geological disposal of nuclear waste. This paper examines the role of large-scale heterogeneity on the development of excavation-induced fractures mapped in the EZ-B field experiment. Rock mass and intact rock heterogeneity are compared by examining deviatoric stress contours from numerical simulations in conjunction with geological maps of the induced fractures. The analyses showed that if the tectonic shears were not kinematically constrained, mobilisation of the tectonic shears played a key role in the development of the mapped induced fractures
The role of heterogeneity on the development of excavation-induced fractures in the Opalinus Clay / Yong, S; Kaiser, P. K.; Loew, S; Fidelibus, Corrado. - 1:(2008), pp. 654-661. (Intervento presentato al convegno GeoEdmonton'08: 61st Canadian Geotechnical Conference and 9th Joint CGS/IAH-CNC Groundwater Conference tenutosi a Edmonton, Alberta, Canada nel September 21-24, 2008).
The role of heterogeneity on the development of excavation-induced fractures in the Opalinus Clay
FIDELIBUS, Corrado
2008-01-01
Abstract
At the Mont Terri Rock Laboratory, research is undertaken to examine the suitability of the Opalinus Clay as a potential host rock for the deep geological disposal of nuclear waste. This paper examines the role of large-scale heterogeneity on the development of excavation-induced fractures mapped in the EZ-B field experiment. Rock mass and intact rock heterogeneity are compared by examining deviatoric stress contours from numerical simulations in conjunction with geological maps of the induced fractures. The analyses showed that if the tectonic shears were not kinematically constrained, mobilisation of the tectonic shears played a key role in the development of the mapped induced fracturesI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
