The Healing Process of the Joints between Buffer Material Blocks and the Influence on Solute Migration
A set of thermo-hydro-mechanical coupling control equations was established, and the healing process of the joints between Gaomiaozi bentonite (GMZ01) buffer material blocks and the influence of the joint parameters were numerically simulated. The calculations consider the effect of joints on solute...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/5524346 |
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| _version_ | 1832563380755365888 |
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| author | Rui Zhou Yuemiao Liu Tao Xu Yufeng Gao |
| author_facet | Rui Zhou Yuemiao Liu Tao Xu Yufeng Gao |
| author_sort | Rui Zhou |
| collection | DOAJ |
| description | A set of thermo-hydro-mechanical coupling control equations was established, and the healing process of the joints between Gaomiaozi bentonite (GMZ01) buffer material blocks and the influence of the joint parameters were numerically simulated. The calculations consider the effect of joints on solute migration, the permeability and thermal conductivity of the buffer material, and the evolution of the healing effect. The effects of the joint design parameters, including the type, number, width, splicing form, and average dry density of the joint, are investigated. Studies show that, under an external water head, the joints will become hydraulic priority channels due to their higher permeability, which will shorten the saturation time of the blocks. As the bentonite gradually saturates, the swelling force compresses the joint material. This action improves the overall uniformity of the buffer material and reduces the priority channel effect. Meanwhile, the final average permeability and diffusion coefficient of the buffer material are found to mainly depend on the average dry density of the buffer material. The higher the average dry density of the buffer material is, the lower the final average permeability and diffusion coefficient are, whereas the distribution of joints and the block splicing are less affected by the average dry density of the buffer material. The findings of this study can provide a reference for the design of bentonite buffer material blocks in the repository. |
| format | Article |
| id | doaj-art-bc5d822d01294c339465e7cd4e63c309 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-bc5d822d01294c339465e7cd4e63c3092025-02-03T01:20:20ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/55243465524346The Healing Process of the Joints between Buffer Material Blocks and the Influence on Solute MigrationRui Zhou0Yuemiao Liu1Tao Xu2Yufeng Gao3Key Laboratory of Urban Underground Engineering of Ministry of Education, Beijing Jiaotong University, Beijing 100044, ChinaBeijing Research Institute of Uranium Geology, Beijing 100029, ChinaKey Laboratory of Urban Underground Engineering of Ministry of Education, Beijing Jiaotong University, Beijing 100044, ChinaBeijing Research Institute of Uranium Geology, Beijing 100029, ChinaA set of thermo-hydro-mechanical coupling control equations was established, and the healing process of the joints between Gaomiaozi bentonite (GMZ01) buffer material blocks and the influence of the joint parameters were numerically simulated. The calculations consider the effect of joints on solute migration, the permeability and thermal conductivity of the buffer material, and the evolution of the healing effect. The effects of the joint design parameters, including the type, number, width, splicing form, and average dry density of the joint, are investigated. Studies show that, under an external water head, the joints will become hydraulic priority channels due to their higher permeability, which will shorten the saturation time of the blocks. As the bentonite gradually saturates, the swelling force compresses the joint material. This action improves the overall uniformity of the buffer material and reduces the priority channel effect. Meanwhile, the final average permeability and diffusion coefficient of the buffer material are found to mainly depend on the average dry density of the buffer material. The higher the average dry density of the buffer material is, the lower the final average permeability and diffusion coefficient are, whereas the distribution of joints and the block splicing are less affected by the average dry density of the buffer material. The findings of this study can provide a reference for the design of bentonite buffer material blocks in the repository.http://dx.doi.org/10.1155/2021/5524346 |
| spellingShingle | Rui Zhou Yuemiao Liu Tao Xu Yufeng Gao The Healing Process of the Joints between Buffer Material Blocks and the Influence on Solute Migration Advances in Civil Engineering |
| title | The Healing Process of the Joints between Buffer Material Blocks and the Influence on Solute Migration |
| title_full | The Healing Process of the Joints between Buffer Material Blocks and the Influence on Solute Migration |
| title_fullStr | The Healing Process of the Joints between Buffer Material Blocks and the Influence on Solute Migration |
| title_full_unstemmed | The Healing Process of the Joints between Buffer Material Blocks and the Influence on Solute Migration |
| title_short | The Healing Process of the Joints between Buffer Material Blocks and the Influence on Solute Migration |
| title_sort | healing process of the joints between buffer material blocks and the influence on solute migration |
| url | http://dx.doi.org/10.1155/2021/5524346 |
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