Klaus Wieczorek
Pore water pressureRisk analysis (engineering)LithologyGeologyEngineeringClosure (computer programming)BusinessBuffer (optical fiber)BoreholeHumidityScale modelSoil scienceMining engineeringHydraulicsContainmentChemistryGeotechnical engineeringClosure (topology)Specific storageHost (network)Systems engineeringDeformation (meteorology)ThermalPerspective (graphical)High-level wasteDeliverableLead (geology)In situBentoniteSeal (mechanical)Context (language use)Scale (chemistry)Hydrogen formationTest proceduresUnderground storageThermal sourceClay rockEquilibrium phaseLong term safetyWaste disposalKey featuresExcavationThermal diffusivityComputer sciencePetrophysicsWaste managementExperimental dataTerm (time)Hydraulic conductivitySpent nuclear fuelGroundwaterProcess modelingPetroleum engineeringRadioactive wasteCementation (geology)Thermal conductivityRock mechanics
9Publications
5H-index
104Citations
Publications 13
Newest
#1Gesa Ziefle (BGR: Institute for Geosciences and Natural Resources)H-Index: 3
#2Tuanny Cajuhi (BGR: Institute for Geosciences and Natural Resources)
Last. Bastian GraupnerH-Index: 6
view all 27 authors...
Abstract. A potential repository site for high-level radioactive waste should ensure the highest possible safety level over a period of one million years. In addition to design issues, demonstrating the integrity of the barrier is essential as it ensures the long-term containment of radioactive waste. Therefore, a multi-disciplinary approach is necessary for the characterization of the surrounding rock and for the understanding of the occurring physical processes. For site selection, however, th...
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#1Klaus WieczorekH-Index: 5
#2Katja Emmerich (KIT: Karlsruhe Institute of Technology)H-Index: 18
Last. Simon NorrisH-Index: 9
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Abstract. Shaft-sealing systems for nuclear waste repositories are constructed to limit fluid inflow from the adjacent rock during the early stage after closure of the repository and to delay the release of possibly contaminated fluids from the repository at later stages. Current German concepts of shaft seals contain the hydraulic sandwich sealing system as a component of the lower seal in host rock (Kudla and Herold, 2021). null null The KIT-developed sandwich sealing system consists of altern...
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#1Lynelle R. JohnsonH-Index: 27
#2Irina GausH-Index: 3
view all 14 authors...
#1Patrik SellinH-Index: 10
#2Mary WestermarkH-Index: 1
Last. Johan SwahnH-Index: 1
view all 8 authors...
The aim of Beacon is to develop the understanding of fundamental processes that lead to material homogenisation, as well as to improve capabilities for numerical modelling. In earlier assessments of bentonite EBS, the mechanical interaction between the installed bentonite components has been neglected and an “ideal” final state has generally been assumed. Key features of the project are (1) re-evaluation of the available knowledge to extract the crucial data to compile the qualitative and quanti...
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#3Stephan CostabelH-Index: 11
#6Jürgen HesserH-Index: 4
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#3Stephan CostabelH-Index: 11
#6Jürgen HesserH-Index: 4
#1Catherine Yu (AMU: Aix-Marseille University)H-Index: 2
#2Jean-Michel Matray (Institut de radioprotection et de sûreté nucléaire)H-Index: 13
Last. Erik Sykes (Nuclear Waste Management Organization)H-Index: 1
view all 8 authors...
The deep borehole (DB) experiment gave the opportunity to acquire hydraulic parameters in a hydraulically undisturbed zone of the Opalinus Clay at the Mont Terri rock laboratory (Switzerland). Three methods were used to estimate hydraulic conductivity and specific storage values of the Opalinus Clay formation and its bounding formations through the 248 m deep borehole BDB-1: application of a Poiseuille-type law involving petrophysical measurements, spectral analysis of pressure time series and i...
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#1Paul BossartH-Index: 12
#2Frédéric BernierH-Index: 1
Last. Klaus WieczorekH-Index: 5
view all 17 authors...
Geologic repositories for radioactive waste are designed as multi-barrier disposal systems that perform a number of functions including the long-term isolation and containment of waste from the human environment, and the attenuation of radionuclides released to the subsurface. The rock laboratory at Mont Terri (canton Jura, Switzerland) in the Opalinus Clay plays an important role in the development of such repositories. The experimental results gained in the last 20 years are used to study the ...
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#1Klaus WieczorekH-Index: 5
#2Irina GausH-Index: 3
Last. Toshihiro SakakiH-Index: 18
view all 6 authors...
Repository concepts in clay or crystalline rock involve bentonite-based buffer or seal systems to provide containment of the waste and limit advective flow. A thorough understanding of buffer and seal evolution is required to make sure the safety functions are fulfilled in the short and long term. Experiments at the real or near-real scale taking into account the interaction with the host rock help to make sure the safety-relevant processes are identified and understood and to show that laborato...
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#1Antonio GensH-Index: 64
#2Klaus WieczorekH-Index: 5
Last. Thomas TrickH-Index: 5
view all 9 authors...
The paper presents an overview of the behaviour of Opalinus Clay under thermal loading as observed in three in situ heating tests performed in the Mont Terri rock laboratory: HE-B, HE-D and HE-E. The three tests are summarily described; they encompass a broad range of test layouts and experimental conditions. Afterwards, the following topics are examined: determination of thermal conductivity, thermally-induced pore pressure generation and thermally-induced mechanical effects. The mechanisms und...
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