Thermo-Hydro-Mechanical Effects on Host Rock for a Generic Spent Nuclear Fuel Repository

Veinović, Želimir; Uroić, Galla; Domitrović, Dubravko; Kegel, Leon

doi:10.17794/rgn.2020.1.6

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…An earthquake can also trigger other catastrophes, for instance, landslides, liquefaction, soil amplifications, compaction or even tsunami-waves (Theilen-Wilige, 2010). In addition, an earthquake that occurs in an area causes damaged infrastructure and soil (Norio et al, 2011), (Veinović et al (2007), Mase et al, (2019), Sukkarak et al (2021). Earthquake damage is mainly influenced by the hardness of the rocks that support the buildings above them, where strong earthquakes cause more damage in areas of hard rock than soft rock area (Chen et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

2D Surface Structure Modeling in Bengkulu City using Geomagnet Method

Ramdani

Refrizon²,

Yuliza³

et al. 2023

jppipa, pendidikan ipa, fisika, biologi, kimia

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Research on 2D modeling of the subsurface structure of the Bengkulu city area was carried out using the geomagnetic method. In this study, we collected data from 130 measurement points using a set of Proton Procession Magnetometers (PPM) to obtain the total magnetic field value. The measurement data were processed by making corrections of daily variations and IGRF (International Geomagnetic Reference Field). We conducted data correction to contour the total magnetic field anomaly. After that, the contour of total magnetic field anomaly was used for the reduction to the poles. This research results from the total magnetic field anomaly show a pair of positive and negative closures. Cross-sections were made on the positive and negative closure pairs to determine the subsurface structure of the area by making a 2-dimensional (2D) model using Mag2DC software. The interpretation of the 2D modeling results shows that three rock layers are continuously arranged. The average susceptibility value of the first layer is 0.00001 cgs which is a sandstone layer at a depth of 0-400 meters; the second layer has an average susceptibility value of 0.002 cgs which is dominated by clay at a depth of 400-700 meters, and; the third layer has an average susceptibility value of 0.006 cgs which is a basalt rock layer at a depth of 700-1000 meters.

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Section: Introductionmentioning

confidence: 99%

2D Surface Structure Modeling in Bengkulu City using Geomagnet Method

Ramdani

Refrizon²,

Yuliza³

et al. 2023

jppipa, pendidikan ipa, fisika, biologi, kimia

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“…However, unfortunately, there has been little research on the stress distribution in the rocks around the underground silos used as LILW disposal facilities [13]. It is essential to conduct a safety evaluation that comprehensively considers various types of impact on sites under construction or on the operation of nuclear facilities such as nuclear power plants, low-and intermediate-level radioactive waste disposal facilities, and spent fuel storage [5][6][7][8]. The Wolsong LILW facility's first phase was constructed 130 m below sea level, and consists of six silos, 50 m in height and 23.6 m in diameter (see Figure 3) [3,9].…”

Section: Introductionmentioning

confidence: 99%

Numerical Parametric Studies on the Stress Distribution in Rocks around Underground Silo

Kim

Kim²

2022

Applied Sciences

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The underground silo was constructed as a facility for the disposal of low- and intermediate-level radioactive waste. It is divided into three parts: the upper-dome core, the lower-dome core, and the cylindrical-space core. Numerical parametric studies on the stress distribution occurring in the surrounding rocks around the underground silo are presented in this paper. It is assumed that the soil layer was distributed to a depth of −4.3 m from the ground level, the weathered rocks were distributed to a depth of −9.5 m from the bottom of the soil layer, and the rocks were distributed in the lower part of the weathered rocks. A 2D axial symmetric finite element model was considered for the numerical analysis of the underground silo. A 3D finite element model was used to verify the reliability of the 2D axial symmetric model. Finite element analysis was carried out under various ratios of in situ horizontal stress to vertical stress (Ko). The numerical results obtained through these analyses include detailed stress states in the p–q and octahedral planes at key locations of finite element models around an underground silo. Contours of safety factor distributions are also presented to evaluate the overall structural safety of the surrounding rock mass, which is the main supporting body of the underground silo.

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“…Fluid flow and its interaction with the solid surface of a porous material with complex structures has broad industrial applications, such as in oil and gas recovery, open and underground mines, and radioactive waste deposits (Kantzas et al, 2015;Medunić et al, 2018;Mohammadi et al, 2019;Veinović et al, 2020). Contaminant retention in fine-grained lenses is a challenging problem that pollutes the aquifer for a long time, and its removal is essential for human life.…”

Section: Introductionmentioning

confidence: 99%

Simulation of aquifer remediation from low-permeable lenses by back-diffusion phenomenon

Tafti¹,

Ardejani²,

Marji³

et al. 2021

MGPB

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Fluid flow in a dual permeable medium (DPM) is essential in solute transport in mining and aquifer studies. In this paper, water flushing into a contaminated DPM containing fine-grained lenses with different geometries was investigated with the Lattice Boltzmann Method (LBM). The LBM model used in this study was D2Q9 with a relaxation time of 1, a cohesion value of 3 for a fluid density of 1 (mu.Lu-3). The saturated fluid in the DPM was a contaminant that usually stays in low permeable lenses and after flushing, it is leaked into the porous medium by a second fluid (water). This phenomenon is predominant when the displacing fluid has a lower concentration than the contaminated fluid. Diffusion and advection are the main mechanisms that control fluid flow in the porous medium. The results of the simulations showed: (1) advection controlled solute transport through the flushing phase, and back-diffusion occurred after the change in phase; (2) the lenses’ geometry influenced the fluid flow pattern and the remediation process. As a result, aquifer remediation strategies based on the lenses’ geometry and their permeability can help us select the appropriate environmental protection.

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Thermo-Hydro-Mechanical Effects on Host Rock for a Generic Spent Nuclear Fuel Repository

Cited by 6 publications

References 7 publications

2D Surface Structure Modeling in Bengkulu City using Geomagnet Method

2D Surface Structure Modeling in Bengkulu City using Geomagnet Method

Numerical Parametric Studies on the Stress Distribution in Rocks around Underground Silo

Simulation of aquifer remediation from low-permeable lenses by back-diffusion phenomenon

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