Hydrogeochemical Evolution and Control Mechanism of Underground Multiaquifer System in Coal Mine Area
Mining activities interfere into the natural groundwater chemical environment, which may lead to hydrogeochemical changes of aquifers and mine water inrush disasters. The study of hydrogeochemical evolution processes of underground aquifers is helpful to the prevention and control of mine water inru...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2020/8820650 |
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| author | Qiding Ju Yu Liu Youbiao Hu Yuquan Wang Qimeng Liu Zitao Wang |
| author_facet | Qiding Ju Yu Liu Youbiao Hu Yuquan Wang Qimeng Liu Zitao Wang |
| author_sort | Qiding Ju |
| collection | DOAJ |
| description | Mining activities interfere into the natural groundwater chemical environment, which may lead to hydrogeochemical changes of aquifers and mine water inrush disasters. The study of hydrogeochemical evolution processes of underground aquifers is helpful to the prevention and control of mine water inrush. The results show that the study area is mainly impacted by four hydrogeochemical processes: dissolution, cation exchange, desulfurization and reduction, and pyrite oxidation. The Cenozoic aquifers are dominated by carbonate dissolution and desulfurization. The Permian aquifers are impacted mainly by cation exchange and sulfate dissolution, followed by pyrite oxidation. The Carboniferous aquifers are mainly impacted by dissolving sulfate, followed by pyrite oxidation and cation exchange. The hydrogeochemical evolution of the aquifers was controlled by mining activities and tectonic changes, and a certain regularity in space. For the Cenozoic aquifers, sulfate dissolution and cation exchange increase from west to east, and desulfurization weakens. For the Permian aquifers, cation exchange and sulfate dissolution are stronger near synclines and faults, pyrite oxidation is enhanced, and desulfurization decreases from the middle to the east of the mining area. For the Carboniferous aquifers, there is a higher dissolution of rock salt, pyrite oxidation, and cation exchange from west to east, and the desulfurization effect weakens. |
| format | Article |
| id | doaj-art-63ff79f3dae44970a66b1fd42f4b319d |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-63ff79f3dae44970a66b1fd42f4b319d2025-02-03T05:53:53ZengWileyGeofluids1468-81151468-81232020-01-01202010.1155/2020/88206508820650Hydrogeochemical Evolution and Control Mechanism of Underground Multiaquifer System in Coal Mine AreaQiding Ju0Yu Liu1Youbiao Hu2Yuquan Wang3Qimeng Liu4Zitao Wang5State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Anhui University of Science and Technology, Huainan 232001, ChinaState Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, ChinaWanbei Coal-electricity Group Company, Suzhou 234001, ChinaSchool of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, ChinaMining activities interfere into the natural groundwater chemical environment, which may lead to hydrogeochemical changes of aquifers and mine water inrush disasters. The study of hydrogeochemical evolution processes of underground aquifers is helpful to the prevention and control of mine water inrush. The results show that the study area is mainly impacted by four hydrogeochemical processes: dissolution, cation exchange, desulfurization and reduction, and pyrite oxidation. The Cenozoic aquifers are dominated by carbonate dissolution and desulfurization. The Permian aquifers are impacted mainly by cation exchange and sulfate dissolution, followed by pyrite oxidation. The Carboniferous aquifers are mainly impacted by dissolving sulfate, followed by pyrite oxidation and cation exchange. The hydrogeochemical evolution of the aquifers was controlled by mining activities and tectonic changes, and a certain regularity in space. For the Cenozoic aquifers, sulfate dissolution and cation exchange increase from west to east, and desulfurization weakens. For the Permian aquifers, cation exchange and sulfate dissolution are stronger near synclines and faults, pyrite oxidation is enhanced, and desulfurization decreases from the middle to the east of the mining area. For the Carboniferous aquifers, there is a higher dissolution of rock salt, pyrite oxidation, and cation exchange from west to east, and the desulfurization effect weakens.http://dx.doi.org/10.1155/2020/8820650 |
| spellingShingle | Qiding Ju Yu Liu Youbiao Hu Yuquan Wang Qimeng Liu Zitao Wang Hydrogeochemical Evolution and Control Mechanism of Underground Multiaquifer System in Coal Mine Area Geofluids |
| title | Hydrogeochemical Evolution and Control Mechanism of Underground Multiaquifer System in Coal Mine Area |
| title_full | Hydrogeochemical Evolution and Control Mechanism of Underground Multiaquifer System in Coal Mine Area |
| title_fullStr | Hydrogeochemical Evolution and Control Mechanism of Underground Multiaquifer System in Coal Mine Area |
| title_full_unstemmed | Hydrogeochemical Evolution and Control Mechanism of Underground Multiaquifer System in Coal Mine Area |
| title_short | Hydrogeochemical Evolution and Control Mechanism of Underground Multiaquifer System in Coal Mine Area |
| title_sort | hydrogeochemical evolution and control mechanism of underground multiaquifer system in coal mine area |
| url | http://dx.doi.org/10.1155/2020/8820650 |
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