Parallel groundwater flow simulation method based on a discrete fracture network model
Objective Groundwater flow in fractured rocks has strong heterogeneity and anisotropy. The discrete fracture network (DFN) method has been internationally considered as one of the most reasonable and effective methods to describe the fracture water transport. Methods In this work, we focused on gran...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Department of Bulletin of Geological Science and Technology
2023-07-01
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| Series: | 地质科技通报 |
| Subjects: | |
| Online Access: | https://dzkjqb.cug.edu.cn/en/article/doi/10.19509/j.cnki.dzkq.tb20230078 |
| _version_ | 1797277605492162560 |
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| author | Jingbo Zhao Jian Liu Zhichao Zhou Ruili Ji Ming Zhang Xinyu Fu |
| author_facet | Jingbo Zhao Jian Liu Zhichao Zhou Ruili Ji Ming Zhang Xinyu Fu |
| author_sort | Jingbo Zhao |
| collection | DOAJ |
| description | Objective Groundwater flow in fractured rocks has strong heterogeneity and anisotropy. The discrete fracture network (DFN) method has been internationally considered as one of the most reasonable and effective methods to describe the fracture water transport. Methods In this work, we focused on granite rock from an underground research laboratory site for the geological disposal of high-level radioactive waste. In addition, a high-performance numerical computing system and parallel codes were employed to develop a groundwater flow simulation method in fractured rocks based on the DFN model. Results The results indicated that the proposed method could conduct the groundwater flow simulation of DFN with thousands of mesh elements. This improved the computational efficiency and ability of the parallel codes to deal with complex models. We established the DFN model structure optimization and parameter setting methods of boundary conditions in a complex condition. This could ensure that the hydraulic heads were continuous at different scale models. Furthermore, in the model area, the hydraulic head is distributed as a network structure along fractures. For the connected fractures, the water level was continuous and changed from high to low. However, the water level in the nonconnected fractures was discontinuous. Groundwater flows along the fracture from the high water level area to the low water level area. The connectivity and permeability of the fracture network have an obvious influence on the groundwater flow characteristics. Conclusion Therefore, we could conclude that the parallel groundwater flow simulation method based on the DFN model could more reasonably reflect the groundwater flow in a fractured rock mass. It was of great significance to further improve the simulated prediction ability and deepen the understanding of groundwater flow characteristics in a fractured medium. |
| first_indexed | 2024-03-07T15:50:50Z |
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| institution | Directory Open Access Journal |
| issn | 2096-8523 |
| language | zho |
| last_indexed | 2024-03-07T15:50:50Z |
| publishDate | 2023-07-01 |
| publisher | Editorial Department of Bulletin of Geological Science and Technology |
| record_format | Article |
| series | 地质科技通报 |
| spelling | doaj.art-e9696c3432694ee4b6947a560dce95cf2024-03-05T02:39:25ZzhoEditorial Department of Bulletin of Geological Science and Technology地质科技通报2096-85232023-07-01424556410.19509/j.cnki.dzkq.tb20230078dzkjtb-42-4-55Parallel groundwater flow simulation method based on a discrete fracture network modelJingbo Zhao0Jian Liu1Zhichao Zhou2Ruili Ji3Ming Zhang4Xinyu Fu5CAEA Innovation Center for Geological Disposal of High-Level Radioactive Waste, Beijing Research Institute of Uranium Geology, Beijing 100029, ChinaCAEA Innovation Center for Geological Disposal of High-Level Radioactive Waste, Beijing Research Institute of Uranium Geology, Beijing 100029, ChinaCAEA Innovation Center for Geological Disposal of High-Level Radioactive Waste, Beijing Research Institute of Uranium Geology, Beijing 100029, ChinaCAEA Innovation Center for Geological Disposal of High-Level Radioactive Waste, Beijing Research Institute of Uranium Geology, Beijing 100029, ChinaCAEA Innovation Center for Geological Disposal of High-Level Radioactive Waste, Beijing Research Institute of Uranium Geology, Beijing 100029, ChinaCAEA Innovation Center for Geological Disposal of High-Level Radioactive Waste, Beijing Research Institute of Uranium Geology, Beijing 100029, ChinaObjective Groundwater flow in fractured rocks has strong heterogeneity and anisotropy. The discrete fracture network (DFN) method has been internationally considered as one of the most reasonable and effective methods to describe the fracture water transport. Methods In this work, we focused on granite rock from an underground research laboratory site for the geological disposal of high-level radioactive waste. In addition, a high-performance numerical computing system and parallel codes were employed to develop a groundwater flow simulation method in fractured rocks based on the DFN model. Results The results indicated that the proposed method could conduct the groundwater flow simulation of DFN with thousands of mesh elements. This improved the computational efficiency and ability of the parallel codes to deal with complex models. We established the DFN model structure optimization and parameter setting methods of boundary conditions in a complex condition. This could ensure that the hydraulic heads were continuous at different scale models. Furthermore, in the model area, the hydraulic head is distributed as a network structure along fractures. For the connected fractures, the water level was continuous and changed from high to low. However, the water level in the nonconnected fractures was discontinuous. Groundwater flows along the fracture from the high water level area to the low water level area. The connectivity and permeability of the fracture network have an obvious influence on the groundwater flow characteristics. Conclusion Therefore, we could conclude that the parallel groundwater flow simulation method based on the DFN model could more reasonably reflect the groundwater flow in a fractured rock mass. It was of great significance to further improve the simulated prediction ability and deepen the understanding of groundwater flow characteristics in a fractured medium.https://dzkjqb.cug.edu.cn/en/article/doi/10.19509/j.cnki.dzkq.tb20230078fractured rock massdiscrete fracture networkparallel simulationgeological disposal of high-level nuclear wastes |
| spellingShingle | Jingbo Zhao Jian Liu Zhichao Zhou Ruili Ji Ming Zhang Xinyu Fu Parallel groundwater flow simulation method based on a discrete fracture network model 地质科技通报 fractured rock mass discrete fracture network parallel simulation geological disposal of high-level nuclear wastes |
| title | Parallel groundwater flow simulation method based on a discrete fracture network model |
| title_full | Parallel groundwater flow simulation method based on a discrete fracture network model |
| title_fullStr | Parallel groundwater flow simulation method based on a discrete fracture network model |
| title_full_unstemmed | Parallel groundwater flow simulation method based on a discrete fracture network model |
| title_short | Parallel groundwater flow simulation method based on a discrete fracture network model |
| title_sort | parallel groundwater flow simulation method based on a discrete fracture network model |
| topic | fractured rock mass discrete fracture network parallel simulation geological disposal of high-level nuclear wastes |
| url | https://dzkjqb.cug.edu.cn/en/article/doi/10.19509/j.cnki.dzkq.tb20230078 |
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