Numerical Simulation of Artificial Recharge Groundwater Effect on Overlying Soft Clay Compression Control
Soil deformation is prone to occur in the process of the foundation pit dewatering. A large number of metro existing tunnels are located in soft soil layers. The compression of soft soil poses a threat to metro existing tunnels. Previously, plenty of research on foundation pit dewatering is focused...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2023/6615699 |
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| _version_ | 1849683875579559936 |
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| author | Chenghua Xu Dandan Yu Gang Liu Zujiang Luo Zhao Li |
| author_facet | Chenghua Xu Dandan Yu Gang Liu Zujiang Luo Zhao Li |
| author_sort | Chenghua Xu |
| collection | DOAJ |
| description | Soil deformation is prone to occur in the process of the foundation pit dewatering. A large number of metro existing tunnels are located in soft soil layers. The compression of soft soil poses a threat to metro existing tunnels. Previously, plenty of research on foundation pit dewatering is focused on the hydraulic head and deformation characteristics of the aquifer. However, the law of water releasing and compression deformation of overlying soft soil has not been taken seriously. In order to study the artificial recharge groundwater effect on overlying soft clay, a three-dimensional seepage–soil deformation coupling numerical model was established. The theoretical basis of the model is Darcy’s law and the principle of effective stress. A foundation pit located in Nanjing, China was selected as an example. The numerical model was used to simulate the hydraulic head and soil deformation caused by foundation pit dewatering and artificial recharge groundwater outside. The result shows that, due to the difference of hydraulic head between the aquifer and the aquitard reducing, it also has a good control effect on the deformation of the soft soil by recharging water into the aquifer. The location of recharge wells around the metro existing tunnel can control the soil deformation effectively, which could help to reduce the impact on the metro existing tunnel. |
| format | Article |
| id | doaj-art-d62e40e5f7a246cba7af1b30bd590ef3 |
| institution | DOAJ |
| issn | 1687-8094 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-d62e40e5f7a246cba7af1b30bd590ef32025-08-20T03:23:39ZengWileyAdvances in Civil Engineering1687-80942023-01-01202310.1155/2023/6615699Numerical Simulation of Artificial Recharge Groundwater Effect on Overlying Soft Clay Compression ControlChenghua Xu0Dandan Yu1Gang Liu2Zujiang Luo3Zhao Li4The 1st Geological Brigade of Jiangsu Geology and Mineral Exploration BureauThe 1st Geological Brigade of Jiangsu Geology and Mineral Exploration BureauThe 1st Geological Brigade of Jiangsu Geology and Mineral Exploration BureauSchool of Earth Sciences and EngineeringSchool of Earth Sciences and EngineeringSoil deformation is prone to occur in the process of the foundation pit dewatering. A large number of metro existing tunnels are located in soft soil layers. The compression of soft soil poses a threat to metro existing tunnels. Previously, plenty of research on foundation pit dewatering is focused on the hydraulic head and deformation characteristics of the aquifer. However, the law of water releasing and compression deformation of overlying soft soil has not been taken seriously. In order to study the artificial recharge groundwater effect on overlying soft clay, a three-dimensional seepage–soil deformation coupling numerical model was established. The theoretical basis of the model is Darcy’s law and the principle of effective stress. A foundation pit located in Nanjing, China was selected as an example. The numerical model was used to simulate the hydraulic head and soil deformation caused by foundation pit dewatering and artificial recharge groundwater outside. The result shows that, due to the difference of hydraulic head between the aquifer and the aquitard reducing, it also has a good control effect on the deformation of the soft soil by recharging water into the aquifer. The location of recharge wells around the metro existing tunnel can control the soil deformation effectively, which could help to reduce the impact on the metro existing tunnel.http://dx.doi.org/10.1155/2023/6615699 |
| spellingShingle | Chenghua Xu Dandan Yu Gang Liu Zujiang Luo Zhao Li Numerical Simulation of Artificial Recharge Groundwater Effect on Overlying Soft Clay Compression Control Advances in Civil Engineering |
| title | Numerical Simulation of Artificial Recharge Groundwater Effect on Overlying Soft Clay Compression Control |
| title_full | Numerical Simulation of Artificial Recharge Groundwater Effect on Overlying Soft Clay Compression Control |
| title_fullStr | Numerical Simulation of Artificial Recharge Groundwater Effect on Overlying Soft Clay Compression Control |
| title_full_unstemmed | Numerical Simulation of Artificial Recharge Groundwater Effect on Overlying Soft Clay Compression Control |
| title_short | Numerical Simulation of Artificial Recharge Groundwater Effect on Overlying Soft Clay Compression Control |
| title_sort | numerical simulation of artificial recharge groundwater effect on overlying soft clay compression control |
| url | http://dx.doi.org/10.1155/2023/6615699 |
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