Research article
| 
18 Mar 2025
Research article |
| 18 Mar 2025
| 18 Mar 2025
SAFENET-2 – fracture evolution in crystalline rocks (from lab to in situ scale)
Helmholtz Centre for Environmental Research UFZ, Department of Environmental Informatics, Leipzig, Germany
Applied Environmental Systems Analysis, Technische Universität Dresden, Dresden, Germany
Christopher McDermott
School of Geosciences, The University of Edinburgh, Edinburgh, United Kingdom
Jeoung Seok Yoon
DynaFrax UG, Potsdam, Germany
Jörg Renner
Institute for Geology, Mineralogy, and Geophysics, Ruhr-Universität Bochum, Bochum, Germany
Li Zhuang
School of Resources and Safety Engineering, Chongqing University, Chongqing, China
Andrew Fraser-Harris
School of Geosciences, The University of Edinburgh, Edinburgh, United Kingdom
Michael Chandler
School of Geosciences, The University of Edinburgh, Edinburgh, United Kingdom
Samuel Graham
School of Geosciences, The University of Edinburgh, Edinburgh, United Kingdom
Ju Wang
Beijing Research Institute of Uranium Geology BRIUG, Beijing, China
Mostafa Mollaali
Helmholtz Centre for Environmental Research UFZ, Department of Environmental Informatics, Leipzig, Germany
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In the AREHS project, the effect of the alternation of cold and warm periods over 1 million years on the hydrogeological system in the vicinity of a repository was simulated. This was done with thermal–hydraulic–mechanical (–chemical) simulations. The simulations were implemented for generic 3D models for all three host rock formations: clay rock, salt rock and crystalline rock. In addition to the results for the generic sites, a workflow was developed that can be applied to concrete sites.
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Short summary
Short summary
The Repository Site Selection Act explicitly emphasises that targeting the disposal of high-level radioactive waste is a so-called learning process. We are of the opinion that the procedure and the available data should be combined with geoscientific knowledge to support the identification of siting regions. We propose this workshop and invite all experts who have dealt with the search for a repository site from a geoscientific perspective.
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The moving distance of the diffusion front is farther away the canister center, along the direction with the neighboring layer having lower diffusion coefficient.
When the bedding angle increases, the diffusion front moves farther in z+ direction, reflecting the increase in effective diffusivity and higher impact of parallel-to-bedding diffusion.
The neighboring layers can slightly reshape the diffusion front line of the radionuclide.
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Publication in SE not foreseen
Short summary
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Short summary
Short summary
We evaluated the uncertainty propagation from the inputs (forcings) and parameters to the predictions of groundwater travel time distributions (TTDs) using a fully distributed numerical model (mHM-OGS) and the StorAge Selection (SAS) function. Through detailed numerical and analytical investigations, we emphasize the key role of recharge estimation in the reliable predictions of TTDs and the good interpretability of the SAS function.
Alexandru Tatomir, Christopher McDermott, Jacob Bensabat, Holger Class, Katriona Edlmann, Reza Taherdangkoo, and Martin Sauter
Adv. Geosci., 45, 185–192, https://doi.org/10.5194/adgeo-45-185-2018, https://doi.org/10.5194/adgeo-45-185-2018, 2018
Short summary
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In the context of hydraulic fracturing we constructed a comprehensive FEP database and applied it to six key focused scenarios defined under the scope of FracRisk project (www.fracrisk.eu). The FEP database is ranked to show the relevance of each item in the FEP list per scenario. The main goal of the work is to illustrate the FEP database applicability to develop a conceptual model for regional-scale stray gas migration.
Miao Jing, Falk Heße, Rohini Kumar, Wenqing Wang, Thomas Fischer, Marc Walther, Matthias Zink, Alraune Zech, Luis Samaniego, Olaf Kolditz, and Sabine Attinger
Geosci. Model Dev., 11, 1989–2007, https://doi.org/10.5194/gmd-11-1989-2018, https://doi.org/10.5194/gmd-11-1989-2018, 2018
T. Fischer, D. Naumov, S. Sattler, O. Kolditz, and M. Walther
Geosci. Model Dev., 8, 3681–3694, https://doi.org/10.5194/gmd-8-3681-2015, https://doi.org/10.5194/gmd-8-3681-2015, 2015
Short summary
Short summary
We present a workflow to convert geological models into the open-source VTU format for usage in numerical simulation models. Tackling relevant scientific questions or engineering tasks often involves multidisciplinary approaches. Conversion workflows are needed between the diverse tools of the various disciplines. Our approach offers an open-source, platform-independent, robust, and comprehensible method that is potentially useful for a multitude of similar environmental studies.
W. He, C. Beyer, J. H. Fleckenstein, E. Jang, O. Kolditz, D. Naumov, and T. Kalbacher
Geosci. Model Dev., 8, 3333–3348, https://doi.org/10.5194/gmd-8-3333-2015, https://doi.org/10.5194/gmd-8-3333-2015, 2015
Short summary
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This technical paper presents a new tool to simulate reactive transport processes in subsurface systems and which couples the open-source software packages OpenGeoSys and IPhreeqc. A flexible parallelization scheme was developed and implemented to enable an optimized allocation of computer resources. The performance tests of the coupling interface and parallelization scheme illustrate the promising efficiency of this generally valid approach to simulate reactive transport problems.
K. Klevakina, J. Renner, N. Doltsinis, and W. Adeagbo
Solid Earth, 5, 883–899, https://doi.org/10.5194/se-5-883-2014, https://doi.org/10.5194/se-5-883-2014, 2014
C. A. Trepmann, J. Renner, and A. Druiventak
Solid Earth, 4, 423–450, https://doi.org/10.5194/se-4-423-2013, https://doi.org/10.5194/se-4-423-2013, 2013
A. E. Ortiz R., R. Jung, and J. Renner
Solid Earth, 4, 331–345, https://doi.org/10.5194/se-4-331-2013, https://doi.org/10.5194/se-4-331-2013, 2013
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Short summary
The DECOVALEX Task SAFENET is dedicated to advancing the understanding of fracture nucleation and evolution processes in crystalline rocks, with applications in nuclear waste management and geothermal reservoir engineering.
The DECOVALEX Task SAFENET is dedicated to advancing the understanding of fracture nucleation...
