Performance assessment of a nuclear waste repository: Upscaling coupled hydro-mechanical properties for far-field transport analysis

Abstract

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Far-field transport modelling for a repository in the Boom Clay in the Netherlands

“…Because a generic repository was investigated, a groundwater model for the entire Netherlands was set up. This contrasts with many groundwater flow studies for disposal of nuclear waste, such as the Forsmark site in Sweden (Hartley & Joyce, 2013), a site in northeast Belgium (Gedeon et al, 2007), the Olkiluoto site in Finland (Blessent et al, 2011), the Sellafield site in the UK (Blum et al, 2005) and Yucca Mountain in the USA (Bodvarsson et al, 1999), where site-specific studies could be performed.…”

Integrated Research as Key to the Development of a Sustainable Geothermal Energy Technology

“…[26,30,37] In this context, Zeeb et al [38] introduced the new toolbox called FraNEP to statistically analyze natural fracture data and to enable transformation into more consistentartificial DFNs by using customized fracture network generators. [26] Whether these DFNs are representative of ar eservoiro rn ot depends strongly on the Figure 6. Multiscale fracture investigations from the micro-to kilometer scale.…”

“…Examples representI)aphase field model (PFM) of fracture sealing; [20] II) as ynthetic model [21] of atypical self-affine,rough fracture surface (fractal dimension = 2.2 [22] ); III) alocal cubic law visualization of typicalf low channelsbased on aperture distributions; [23] IV) amedical X-ray computed tomography (CT) scan of af racturedc ore sample; [24] V) lineament interpretationsb ased on remote sensing; [25] and VI) arandom stochasticD FN model. [26] Fracture or DFN studies provide improved permeability predictions of single fractures(analytical, [27] numerical [24,28] )and fracturedg eothermalreservoirs (analytical, [29] numerical [24,25,30] availability of outcrops and subsurface data;this is often provided, for example,b yf ield measurements,t errestrial laser scanning, [39] and remote sensing [40] (Figure6V), as well as aa pplied samplingm ethod, such as scanline or window sampling. [38] In conclusion, the evaluation of fluid flow in fractured reservoirs is am atter of scales,r angingf rom single fracture scales (mmt oc ms cale,m echanically and chemically induced geometries)t ot he field scale (cm to km scale,t ransferability of DFN geometries), the interactions of which have to be better understood to provide more reliable geothermal reservoir models.…”

Effect of Chemical Corrosion on the Mechanical Characteristics of Parent Rocks for Nuclear Waste Storage

“…Many international scholars have launched a series of studies [4][5][6][7][8][9]. For example, Millard et al [4] adopted numerical simulation to analyze the surrounding rock of a near field repository of nuclear waste disposal based on THM and found that although temperature is almost not influenced by the THM coupling, stress is greatly affected.…”

“…For example, Millard et al [4] adopted numerical simulation to analyze the surrounding rock of a near field repository of nuclear waste disposal based on THM and found that although temperature is almost not influenced by the THM coupling, stress is greatly affected. Blum et al [5] used "Udec" to examine the coupling properties of HM of the far field repository of nuclear waste disposal in the fractured rock mass. Meanwhile, Zhang [6] employed their own development program and adopted the coupling model of THM to analyze the FEBEX in situ test from the two-dimensional finite element.…”