Observation and evaluation of surface and underground space changes in well salt mining based on InSAR: a case study of Qingjiang salt mine, Zhangshu, China
Deep well salt extraction not only readily leads to the salinization of the surrounding terrain but may also cause regional subsidence, posing significant risks to both infrastructure and local populations. Understanding the quantitative relationship between changes in underground space and surface...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-12-01
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| Series: | International Journal of Digital Earth |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/17538947.2025.2458683 |
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| author | Hua Gao Xiaoliang Luo Hui Lin Guangcai Feng Lvchun Wang |
| author_facet | Hua Gao Xiaoliang Luo Hui Lin Guangcai Feng Lvchun Wang |
| author_sort | Hua Gao |
| collection | DOAJ |
| description | Deep well salt extraction not only readily leads to the salinization of the surrounding terrain but may also cause regional subsidence, posing significant risks to both infrastructure and local populations. Understanding the quantitative relationship between changes in underground space and surface deformation is essential for balancing salt production and safety concerns. In this study, we used Sentinel-1 data from January 2018 to January 2022 and SBAS InSAR to quantify ground deformation within the salt mine region of Zhangshu. Our results indicate that the deformation area spans over 1.5 km², with the highest deformation rate of 38.5 mm/yr. Some areas show increase in the deformation rate. Employing the Mogi model, we conducted an inversion analysis to estimate the subsurface material loss rate. The net annual loss rate of the region is 8.65×104 m3/yr. Based on cumulative volume changes, the potential max earthquake magnitude is estimated at Mw 5.11, with a possibility of reaching Mw 5.5 in 60 years without intervention. To mitigate geological disaster risks, we recommend implementing building height restrictions, comprehensive infrastructure monitoring, careful mining and backfilling strategies. |
| format | Article |
| id | doaj-art-8078214c70394daa8213b67a085a1a66 |
| institution | Kabale University |
| issn | 1753-8947 1753-8955 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | International Journal of Digital Earth |
| spelling | doaj-art-8078214c70394daa8213b67a085a1a662025-01-28T05:41:39ZengTaylor & Francis GroupInternational Journal of Digital Earth1753-89471753-89552025-12-0118110.1080/17538947.2025.2458683Observation and evaluation of surface and underground space changes in well salt mining based on InSAR: a case study of Qingjiang salt mine, Zhangshu, ChinaHua Gao0Xiaoliang Luo1Hui Lin2Guangcai Feng3Lvchun Wang4Key Laboratory of Natural Disaster Monitoring, Early Warning and Assessment of Jiangxi Province, School of Geography and Environment, Jiangxi Normal University, Nanchang, People’s Republic of ChinaChina Mobile (Jiangxi) Virtual Reality Technology Co., LTD, Nanchang, People’s Republic of ChinaKey Laboratory of Natural Disaster Monitoring, Early Warning and Assessment of Jiangxi Province, School of Geography and Environment, Jiangxi Normal University, Nanchang, People’s Republic of ChinaMinistry of Education, Central South University, Changsha, People’s Republic of ChinaChina Mobile (Jiangxi) Virtual Reality Technology Co., LTD, Nanchang, People’s Republic of ChinaDeep well salt extraction not only readily leads to the salinization of the surrounding terrain but may also cause regional subsidence, posing significant risks to both infrastructure and local populations. Understanding the quantitative relationship between changes in underground space and surface deformation is essential for balancing salt production and safety concerns. In this study, we used Sentinel-1 data from January 2018 to January 2022 and SBAS InSAR to quantify ground deformation within the salt mine region of Zhangshu. Our results indicate that the deformation area spans over 1.5 km², with the highest deformation rate of 38.5 mm/yr. Some areas show increase in the deformation rate. Employing the Mogi model, we conducted an inversion analysis to estimate the subsurface material loss rate. The net annual loss rate of the region is 8.65×104 m3/yr. Based on cumulative volume changes, the potential max earthquake magnitude is estimated at Mw 5.11, with a possibility of reaching Mw 5.5 in 60 years without intervention. To mitigate geological disaster risks, we recommend implementing building height restrictions, comprehensive infrastructure monitoring, careful mining and backfilling strategies.https://www.tandfonline.com/doi/10.1080/17538947.2025.2458683InSARsurface deformationmining industry safetyrisk analysisforecasting |
| spellingShingle | Hua Gao Xiaoliang Luo Hui Lin Guangcai Feng Lvchun Wang Observation and evaluation of surface and underground space changes in well salt mining based on InSAR: a case study of Qingjiang salt mine, Zhangshu, China International Journal of Digital Earth InSAR surface deformation mining industry safety risk analysis forecasting |
| title | Observation and evaluation of surface and underground space changes in well salt mining based on InSAR: a case study of Qingjiang salt mine, Zhangshu, China |
| title_full | Observation and evaluation of surface and underground space changes in well salt mining based on InSAR: a case study of Qingjiang salt mine, Zhangshu, China |
| title_fullStr | Observation and evaluation of surface and underground space changes in well salt mining based on InSAR: a case study of Qingjiang salt mine, Zhangshu, China |
| title_full_unstemmed | Observation and evaluation of surface and underground space changes in well salt mining based on InSAR: a case study of Qingjiang salt mine, Zhangshu, China |
| title_short | Observation and evaluation of surface and underground space changes in well salt mining based on InSAR: a case study of Qingjiang salt mine, Zhangshu, China |
| title_sort | observation and evaluation of surface and underground space changes in well salt mining based on insar a case study of qingjiang salt mine zhangshu china |
| topic | InSAR surface deformation mining industry safety risk analysis forecasting |
| url | https://www.tandfonline.com/doi/10.1080/17538947.2025.2458683 |
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