Conference Abstract
| 
10 Nov 2021
Conference Abstract |
| 10 Nov 2021
| 10 Nov 2021
AREHS: effects of changing boundary conditions on the development of hydrogeological systems: numerical long-term modelling considering thermal–hydraulic–mechanical(–chemical) coupled effects
G.E.O.S. Ingenieurgesellschaft mbH, Schwarze Kiefern 2, 09633 Halsbrücke, Germany
Heinz Konietzky
Lehrstuhl Gebirgs- und Felsmechanik/Felsbau, Institut für Geotechnik, TU Bergakademie Freiberg, Gustav-Zeuner-Straße 1, 09596 Freiberg, Germany
Thomas Nagel
Lehrstuhl für Bodenmechanik und Grundbau, Institut für Geotechnik, TU Bergakademie Freiberg, Gustav-Zeuner-Straße 1, 09596 Freiberg, Germany
Olaf Kolditz
Helmholtz-Zentrum für Umweltforschung GmbH – UFZ, Permoserstr. 15, 04318 Leipzig, Germany
Fakultät für Umweltwissenschaften, Angewandte Umweltsystemanalyse, Technische Universität Dresden, Dresden, Germany
Andreas Jockel
ERCOSPLAN Erfurter Consulting und Planungsbüro GmbH, Arnstädter Straße 28, 99096 Erfurt, Germany
Christian B. Silbermann
Lehrstuhl für Bodenmechanik und Grundbau, Institut für Geotechnik, TU Bergakademie Freiberg, Gustav-Zeuner-Straße 1, 09596 Freiberg, Germany
Friederike Tiedke
Lehrstuhl Gebirgs- und Felsmechanik/Felsbau, Institut für Geotechnik, TU Bergakademie Freiberg, Gustav-Zeuner-Straße 1, 09596 Freiberg, Germany
Tobias Meisel
Helmholtz-Zentrum für Umweltforschung GmbH – UFZ, Permoserstr. 15, 04318 Leipzig, Germany
Karsten Rink
Helmholtz-Zentrum für Umweltforschung GmbH – UFZ, Permoserstr. 15, 04318 Leipzig, Germany
Wenqing Wang
Helmholtz-Zentrum für Umweltforschung GmbH – UFZ, Permoserstr. 15, 04318 Leipzig, Germany
Florian Zill
Helmholtz-Zentrum für Umweltforschung GmbH – UFZ, Permoserstr. 15, 04318 Leipzig, Germany
Antje Carl
ERCOSPLAN Erfurter Consulting und Planungsbüro GmbH, Arnstädter Straße 28, 99096 Erfurt, Germany
Aron D. Gabriel
G.E.O.S. Ingenieurgesellschaft mbH, Schwarze Kiefern 2, 09633 Halsbrücke, Germany
Marcel Schlegel
G.E.O.S. Ingenieurgesellschaft mbH, Schwarze Kiefern 2, 09633 Halsbrücke, Germany
Torsten Abraham
G.E.O.S. Ingenieurgesellschaft mbH, Schwarze Kiefern 2, 09633 Halsbrücke, Germany
Related authors
René Kahnt, Heinz Konietzky, Thomas Nagel, Olaf Kolditz, Andreas Jockel, Christian B. Silbermann, Friederike Tiedtke, Tobias Meisel, Florian Zill, Anton Carl, Aron D. Gabriel, and Marcel Schlegel
Saf. Nucl. Waste Disposal, 2, 117–118, https://doi.org/10.5194/sand-2-117-2023, https://doi.org/10.5194/sand-2-117-2023, 2023
Short summary
Short summary
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.
Olaf Kolditz, Christopher McDermott, Jeoung Seok Yoon, Jörg Renner, Li Zhuang, Andrew Fraser-Harris, Michael Chandler, Samuel Graham, Ju Wang, and Mostafa Mollaali
Saf. Nucl. Waste Disposal Discuss., https://doi.org/10.5194/sand-2024-2, https://doi.org/10.5194/sand-2024-2, 2024
Preprint under review for SaND
Short summary
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.
Thomas Nagel, Maximilian Bittens, Jörg Buchwald, Aqeel A. Chaudhry, Oliver G. Ernst, Werner Gräsle, Feliks Kiszkurno, Kata Kurgyis, Jobst Maßmann, Sibylle Mayr, Jan Thiedau, and Chao Zhang
Saf. Nucl. Waste Disposal, 2, 93–94, https://doi.org/10.5194/sand-2-93-2023, https://doi.org/10.5194/sand-2-93-2023, 2023
Short summary
Short summary
Computer simulations are used to understand processes in nuclear waste disposal. The results are used to judge the safety of waste repository. Not all the information needed for such analyses, e.g. rock properties, is precisely known, contributing to uncertainty in the analysis results. We are interested in understanding the effect of the uncertainty of input quantities and of certain simplifications made during model creation on the outcome of computer simulations.
Max Friedel, Fabian Weber, Heinz Konietzky, Paola Rocio León Vargas, Alireza Hassanzadegan, and Michael Rahmig
Saf. Nucl. Waste Disposal, 2, 63–63, https://doi.org/10.5194/sand-2-63-2023, https://doi.org/10.5194/sand-2-63-2023, 2023
Short summary
Short summary
As part of BARIK, a laboratory programme is used to generate a dataset for anisotropic material to verify and validate the developed constitutive model. Based on
Freiberger gneis, basic tests and multi-stage triaxial compression tests were conducted, the latter to investigate a post-failure region. Hydromechanical coupled triaxial compression tests to observe micromechanical damage processes are in progress. This contribution provides an overview of the laboratory programme and first results.
Thomas Kohl, Ingo Sass, Olaf Kolditz, Christoph Schüth, Wolfram Rühaak, Jürgen Schamp, Judith Bremer, Bastian Rudolph, Katharina Schätzler, and Eva Schill
Saf. Nucl. Waste Disposal, 2, 135–136, https://doi.org/10.5194/sand-2-135-2023, https://doi.org/10.5194/sand-2-135-2023, 2023
Short summary
Short summary
Crystalline rocks are being considered as potential host rocks in the ongoing search for a suitable site for a nuclear waste repository in Germany, where there is no existing experience in terms of excavating a repository in crystalline rocks. The planned underground laboratory GeoLaB addressing crystalline geothermal reservoirs offers unique opportunities for synergies with nuclear waste disposal research and development, especially in the exploration and building phases.
Matthias Hinze, Klaus Wieczorek, Katja Emmerich, Jürgen Hesser, Markus Furche, Hua Shao, David Jaeggi, Senecio Schefer, Thomas Nagel, Juan Carlos Mayor, Simon Norris, Kim Chang-Seok, Philipp Schädle, José Luis García-Siñeriz, Rainer Schuhmann, Franz Königer, Uwe Glaubach, Christopher Rölke, and Ralf Diedel
Saf. Nucl. Waste Disposal, 2, 175–176, https://doi.org/10.5194/sand-2-175-2023, https://doi.org/10.5194/sand-2-175-2023, 2023
Short summary
Short summary
The SW-A experiment is a large-scale in situ test at the Mont Terri rock laboratory that implements a vertical hydraulic shaft-sealing system in argillaceous host rock. The response of the system and the surrounding rock to hydration is examined. The experiment objectives are to demonstrate the feasibility of installation, to investigate the saturation process, to qualify measurement and monitoring techniques, and to assess the sealing effectiveness. Recent data and experience are presented.
Tuanny Cajuhi, Jobst Maßmann, Gesa Ziefle, Thomas Nagel, and Keita Yoshioka
Saf. Nucl. Waste Disposal, 2, 105–106, https://doi.org/10.5194/sand-2-105-2023, https://doi.org/10.5194/sand-2-105-2023, 2023
Short summary
Short summary
Understanding complex systems such as radioactive waste repositories involves the study of cross-scale coupled processes. We discuss some important concepts and their mutual interactions for interpreting such systems based on complementary model-based analyses at various scales. One goal statement is to explain the formation of drying cracks. Near-field understanding can be used to determine how detailed repository far-field models must be and can lead to more robust analysis results.
René Kahnt, Heinz Konietzky, Thomas Nagel, Olaf Kolditz, Andreas Jockel, Christian B. Silbermann, Friederike Tiedtke, Tobias Meisel, Florian Zill, Anton Carl, Aron D. Gabriel, and Marcel Schlegel
Saf. Nucl. Waste Disposal, 2, 117–118, https://doi.org/10.5194/sand-2-117-2023, https://doi.org/10.5194/sand-2-117-2023, 2023
Short summary
Short summary
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.
Rocio Paola León Vargas, Max Friedel, Alireza Hassanzadegan, Michael Rahmig, Fabian Weber, and Heinz Konietzky
Saf. Nucl. Waste Disposal, 2, 119–120, https://doi.org/10.5194/sand-2-119-2023, https://doi.org/10.5194/sand-2-119-2023, 2023
Short summary
Short summary
This contribution gives an overview of how the BARIK constitutive model was developed and tested. BARIK is an extended Hoek–Brown model for fractured crystalline rock that takes up to three fracture systems into account. It gives a numerical value to qualitative integrity criteria to show that the containment-providing rock zone in crystalline host rock is still intact. The BARIK model is a step forward in understanding and modeling the complex behavior of fractured crystalline hard rock.
Michael Kühn, Dirk Bosbach, Horst Geckeis, Vinzenz Brendler, and Olaf Kolditz
Saf. Nucl. Waste Disposal, 2, 195–195, https://doi.org/10.5194/sand-2-195-2023, https://doi.org/10.5194/sand-2-195-2023, 2023
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.
Chaofan Chen, Tao Yuan, Renchao Lu, Cornelius Fischer, Olaf Kolditz, and Haibing Shao
Adv. Geosci., 58, 77–85, https://doi.org/10.5194/adgeo-58-77-2022, https://doi.org/10.5194/adgeo-58-77-2022, 2022
Short summary
Short summary
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.
Dominik Kern, Fabien Magri, Victor I. Malkovsky, and Thomas Nagel
Saf. Nucl. Waste Disposal, 1, 179–180, https://doi.org/10.5194/sand-1-179-2021, https://doi.org/10.5194/sand-1-179-2021, 2021
Short summary
Short summary
We try to assess the integrity of storage sites for nuclear waste in case of an earthquake, particularly for sites in crystalline rocks, such as granite.
Dirk Bosbach, Horst Geckeis, Frank Heberling, Olaf Kolditz, Michael Kühn, Katharina Müller, Thorsten Stumpf, and the iCROSS team
Saf. Nucl. Waste Disposal, 1, 85–87, https://doi.org/10.5194/sand-1-85-2021, https://doi.org/10.5194/sand-1-85-2021, 2021
Short summary
Short summary
The present contribution provides an overview on the collaborative project iCROSS and reports selected results. The impact of considering complex coupled processes in repository subsystems for the assessment of the integrity of a given (generic) repository arrangement will be discussed. The interdisciplinary team combines experimental work in the lab, in the underground rock laboratory and environmental simulations in order to achieve process understanding across variable scales.
Gesa Ziefle, Tuanny Cajuhi, Sebastian Condamin, Stephan Costabel, Oliver Czaikowski, Antoine Fourriére, Larissa Friedenberg, Markus Furche, Nico Graebling, Bastian Graupner, Jürgen Hesser, David Jaeggi, Kyra Jantschik, Tilo Kneuker, Olaf Kolditz, Franz Königer, Herbert Kunz, Ben Laurich, Jobst Maßmann, Christian Ostertag-Henning, Dorothee Rebscher, Karsten Rink, Wolfram Rühaak, Senecio Schefer, Rainer Schuhmann, Marc Wengler, and Klaus Wieczorek
Saf. Nucl. Waste Disposal, 1, 79–81, https://doi.org/10.5194/sand-1-79-2021, https://doi.org/10.5194/sand-1-79-2021, 2021
Sonja Martens, Christopher Juhlin, Viktor J. Bruckman, Gregor Giebel, Thomas Nagel, Antonio P. Rinaldi, and Michael Kühn
Adv. Geosci., 49, 31–35, https://doi.org/10.5194/adgeo-49-31-2019, https://doi.org/10.5194/adgeo-49-31-2019, 2019
Miao Jing, Falk Heße, Rohini Kumar, Olaf Kolditz, Thomas Kalbacher, and Sabine Attinger
Hydrol. Earth Syst. Sci., 23, 171–190, https://doi.org/10.5194/hess-23-171-2019, https://doi.org/10.5194/hess-23-171-2019, 2019
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.
Ya-Nan Zhao, Heinz Konietzky, Jürgen Knorr, and Albert Kerber
Adv. Geosci., 45, 63–72, https://doi.org/10.5194/adgeo-45-63-2018, https://doi.org/10.5194/adgeo-45-63-2018, 2018
Short summary
Short summary
Silicon carbide is seen as a possible replacement for metals as canister material in geological disposal of radioactive waste. The performed calculations on a small model underline the concept that the SSiC canister alone sustains definite loading of the host rock, but should be protected generally by a mechanically robust over pack preferably made of carbon concrete to complete a final waste package for all types of host rocks (shared and split functionality in TRIPLE C concept).
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
Short summary
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.
Short summary
In the framework of the Site Selection Act – StandAG, the geoscientific and planning requirements and criteria for the site selection for a repository for high-active nuclear waste are specified. This includes, among others, the modelling of hydrogeological scenarios such as how future cold and warm periods and associated glaciation events can change the (petro-)physical properties as well as the natural hydrogeological properties of the overall system which is the focus of the AREHS project.
In the framework of the Site Selection Act – StandAG, the geoscientific and planning...
