Discrete fracture network (DFN) modelling of a high-level radioactive waste repository host rock and the effects on its hydrogeological behaviour

نویسندگان

چکیده

Fracture network modelling and a hydrological evaluation were performed in well more than 900 m deep that penetrated the Boda Claystone Formation, potential host rock for high-level nuclear waste disposal facilities Hungary. The fracture geometry was generated with discrete algorithm, which permeability porosity of system can be calculated if aperture fractures is known. estimated via an calibration based on comparison measured modelled values. Flow zone indices numerous sections along well, designating hydraulic units, fluid flow-controlling properties are internally even. Based flow most parts behave uniformly, while three narrow zones differ significantly. first located upper 100 probably formed due to weathering. second at approximately 400 m, where large-scale structural boundary presumed. In third 700 lithological change greatly affects properties, but influence tectonic processes cannot ruled out.

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ژورنال

عنوان ژورنال: Journal of Structural Geology

سال: 2022

ISSN: ['0191-8141', '1873-1201']

DOI: https://doi.org/10.1016/j.jsg.2022.104556