Liange Zheng
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View article: Development of an ERT‐Based Framework for Bentonite Buffers Monitoring From Laboratory Tests: 2. Quantitative Moisture Dynamics Estimation Model
Development of an ERT‐Based Framework for Bentonite Buffers Monitoring From Laboratory Tests: 2. Quantitative Moisture Dynamics Estimation Model Open
The long‐term containment of high‐level radioactive waste in geological disposal repositories relies on Engineered Barrier Systems (EBS), with bentonite clay emerging as a candidate material due to its unique properties. Understanding mois…
View article: Development of an ERT‐Based Framework for Bentonite Buffers Monitoring From Laboratory Tests: 1. Characterizing Thermal–Hydrological–Mechanical Processes
Development of an ERT‐Based Framework for Bentonite Buffers Monitoring From Laboratory Tests: 1. Characterizing Thermal–Hydrological–Mechanical Processes Open
Bentonite clay is widely used in engineered barrier systems for the permanent disposal of high‐level radioactive waste due to its low permeability, high swelling capacity, and thermal stability. However, the complex thermal‐hydrological‐me…
View article: Coupled THM modeling of a bentonite buffer in high temperatures conditions: from laboratory to field test
Coupled THM modeling of a bentonite buffer in high temperatures conditions: from laboratory to field test Open
A bentonite buffer in a geological repository will be simultaneously heated by the decay of radioactive waste and hydrated by the surrounding host rock, triggering complex and coupled THMC (thermal-hydrological-mechanical-chemical) process…
View article: Optically Triggered Nucleation Eliminates Hydration Hysteresis in Swelling Minerals
Optically Triggered Nucleation Eliminates Hydration Hysteresis in Swelling Minerals Open
Hydration hysteresis is a ubiquitous feature of water exchange between porous solids and humid vapors. Whether one or both of the hydration hysteresis loop branches is metastable remains debated due to the many possible hydration mechanism…
View article: International Collaboration Activities in Geologic Disposal Research (FY24 Progress Report)
International Collaboration Activities in Geologic Disposal Research (FY24 Progress Report) Open
This report describes the FY24 status of international collaboration regarding geologic disposal research in the Office of Spent Fuel and Waste Science and Technology (SFWST) in the Department of Energy’s (DOE) Office of Nuclear Energy (NE…
View article: Harnessing Geothermal Energy Potential from High-Level Nuclear Waste Repositories
Harnessing Geothermal Energy Potential from High-Level Nuclear Waste Repositories Open
The disposal of high-level nuclear waste (HLW) has been one of the most challenging issues for nuclear energy utilization. In this study, we have explored the potential of extracting decay heat from HLW, taking advantage of recent advances…
View article: International Concepts for the Assessment of Deep Geological Disposal of Radioactive Waste
International Concepts for the Assessment of Deep Geological Disposal of Radioactive Waste Open
More than 50 countries worldwide are currently exploring options for radioactive waste (RW) disposal, considering the link between geoscience fundamentals and the safety of RW disposal sites. The presentation will focus on the lessons lear…
View article: Geophysical Understanding of Coupled Thermal-Hydro-Mechanical Dynamics in Rock Salt During Heating
Geophysical Understanding of Coupled Thermal-Hydro-Mechanical Dynamics in Rock Salt During Heating Open
The distinctive properties of salt, such as low permeability, high thermal conductivity, and self-sealing features, make it a suitable medium for storing heat-generating radioactive waste. Understanding the thermal, hydrological, and mecha…
View article: Prediction of Long-Term Geochemical Change in Bentonite Based on the Interpretative THMC Model of the FEBEX In Situ Test
Prediction of Long-Term Geochemical Change in Bentonite Based on the Interpretative THMC Model of the FEBEX In Situ Test Open
Since nuclear energy is crucial in the decarbonization of the energy supply, one hurdle to remove is the handling of high-level radioactive waste (HLW). Disposal of HLW in a deep geological repository has long been deemed a viable permanen…
View article: The role of international collaboration in the United States geologic disposal research program
The role of international collaboration in the United States geologic disposal research program Open
More than a decade ago, the United States disposal program discontinued all research activities focused on the unsaturated fractured tuff formation at Yucca Mountain as the geologic disposal site for spent fuel and high-level radioactive w…
View article: Bentonite buffer under high temperature: laboratory experiments and coupled process modeling
Bentonite buffer under high temperature: laboratory experiments and coupled process modeling Open
Bentonite buffer in a geological repository will be simultaneously heated from decaying radioactive waste and hydrated from the surrounding host rock, triggering complex and coupled THMC (thermal–hydrological–mechanical–chemical) processes…
View article: Hydro-mechanical behavior of heated bentonite buffer for geologic disposal of high-level radioactive waste: A bench-scale X-ray computed tomography investigation
Hydro-mechanical behavior of heated bentonite buffer for geologic disposal of high-level radioactive waste: A bench-scale X-ray computed tomography investigation Open
The behavior of heated bentonite buffer is critical for the security and long-term performance of a geological repository for high-level radioactive waste (HLW). While laboratory column experiments have been conducted to investigate compac…
View article: Evaluation of Engineered Barrier Systems (FY2022 Report)
Evaluation of Engineered Barrier Systems (FY2022 Report) Open
This report describes research and development (R&D) activities conducted during Fiscal Year 2022 (FY22) specifically related to the Engineered Barrier System (EBS) R&D Work Package in the Spent Fuel Waste Science and Technology (SFWST) Ca…
View article: Clay Mineral Transformations after Bentonite/Clayrocks and Heater/Water Interactions from Lab and Large-Scale Tests
Clay Mineral Transformations after Bentonite/Clayrocks and Heater/Water Interactions from Lab and Large-Scale Tests Open
This book, “Clay Mineral Transformations after Bentonite/Clayrocks and Heater/Water Interactions from Lab and Large-Scale Tests”, covers a broad range of relevant and interesting topics related to deep geological disposal of nuclear fuels …
View article: Editorial for Special Issue “Clay Mineral Transformations after Bentonite/Clayrocks and Heater/Water Interactions from Lab and Large-Scale Tests”
Editorial for Special Issue “Clay Mineral Transformations after Bentonite/Clayrocks and Heater/Water Interactions from Lab and Large-Scale Tests” Open
This Special Issue “Clay Mineral Transformations after Bentonite/Clayrocks and Heater/Water Interactions from Lab and Large-Scale Tests” covers a broad range of relevant and interesting topics related to deep geological disposal of nuclear…
View article: Can we safely go to 200 °C? An integrated approach to assessing impacts to the engineered barrier system in a high-temperature repository
Can we safely go to 200 °C? An integrated approach to assessing impacts to the engineered barrier system in a high-temperature repository Open
This presentation gives on overview of the complex thermo-hydro-mechanical-chemical (THMC) processes occurring during the disposal of heat-producing high-level radioactive waste in geologic repositories. A specific focus is on the role of …
View article: Evaluation of Engineered Barrier Systems FY21 Report
Evaluation of Engineered Barrier Systems FY21 Report Open
This report describes research and development (R&D) activities conducted during fiscal year 2021 (FY21) specifically related to the Engineered Barrier System (EBS) R&D Work Package in the Spent Fuel and Waste Science and Technology (SFWST…
View article: Micromechanical thermo-hydro-mechanical coupled model for fractured rocks considering multi-scale structures and its engineering application
Micromechanical thermo-hydro-mechanical coupled model for fractured rocks considering multi-scale structures and its engineering application Open
Most existing studies on the coupled thermal-hydro-mechanical models for fractured rock mass are formulated using the macroscopic phenomenology method. As a result, the micromechanical behaviors of discontinuities, which essentially contro…
View article: An extended numerical manifold method for unsaturated soil‐water interaction analysis at micro‐scale
An extended numerical manifold method for unsaturated soil‐water interaction analysis at micro‐scale Open
To investigate unsaturated soil‐water interaction at micro‐scale, this study extends the numerical manifold method (NMM) by incorporating a soil‐water coupling model considering specific capillary water distribution and capillary force cal…
View article: Data-informed Emulators for Multi-Physics Simulations
Data-informed Emulators for Multi-Physics Simulations Open
Machine learning techniques are powerful tools for construction of emulators for complex systems. We explore different machine learning methods and conceptual methodologies, ranging from functional approximations to dynamical approximation…
View article: Disposal Concepts for a High-Temperature Repository in Shale.
Disposal Concepts for a High-Temperature Repository in Shale. Open
Disposal of large, heat-generating waste packages containing the equivalent of 21 pressurized water reactor (PWR) assemblies or more is among the disposal concepts under investigation for a future repository for spent nuclear fuel (SNF) in…