Identification of karst water inflow sources in the main shaft of Lianhuashan, Jingxiang phosphate mine, Hubei Province
Karst mining areas are characterized by pronounced heterogeneity due to extensive karst development, making them particularly susceptible to water inrush and groundwater contamination during deep extension mining. During the construction of the main shaft in Lianhuashan, the construction progress wa...
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Editorial Office of Hydrogeology & Engineering Geology
2025-07-01
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| Series: | Shuiwen dizhi gongcheng dizhi |
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| Online Access: | https://www.swdzgcdz.com/en/article/doi/10.16030/j.cnki.issn.1000-3665.202502032 |
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| author | Si XU Yang YU Peipei LIAO Zuxu CAI Jiaqianlin LIU Yanmei CHEN |
| author_facet | Si XU Yang YU Peipei LIAO Zuxu CAI Jiaqianlin LIU Yanmei CHEN |
| author_sort | Si XU |
| collection | DOAJ |
| description | Karst mining areas are characterized by pronounced heterogeneity due to extensive karst development, making them particularly susceptible to water inrush and groundwater contamination during deep extension mining. During the construction of the main shaft in Lianhuashan, the construction progress was slow because of being troubled by water inrush problems. This study identified the water-filling sources and main runoff paths of the main shaft by analyzing the hydrochemical data and isotope data before and after the pumping tests of the main shaft and surrounding hydro-holes and combining with high-precision field tracer experiments. The results show that the groundwater in drilling hole ZK02 within the Lianhuashan mining section is continuously replenished by the leakage of leachate from the southern phosphogypsum slag yard, with hydrochemical type of SO4—Mg•Ca. The hydrogen and oxygen isotopes show that atmospheric precipitation is one of the main water-filling sources of regional groundwater. After the main shaft pumping, the hydrochemical type changes from HCO3•SO4—Mg•Ca to SO4•HCO3—Mg•Ca, indicating that the drawdown funnel formed by pumping promotes the joint replenishment of the karst water of ZK01 and the leachate-polluted water of ZK02 to the main shaft. The tracer test reveals that the groundwater flow direction is from the slag yard→ZK02→ZK03→the main shaft. Regional flow is predominantly from the south, and under the structural influence of the F13 fault, leachate migrates along the Zhangjiachong syncline axis toward the F09 fault, eventually discharging through the main shaft along its dip direction. This study can provide a scientific basis for the prevention and control of karst water hazards, groundwater pollution, and the management of water resource development and utilization in the main shaft. |
| format | Article |
| id | doaj-art-89a945a7c47c43049a4ba76552d3e084 |
| institution | Kabale University |
| issn | 1000-3665 |
| language | zho |
| publishDate | 2025-07-01 |
| publisher | Editorial Office of Hydrogeology & Engineering Geology |
| record_format | Article |
| series | Shuiwen dizhi gongcheng dizhi |
| spelling | doaj-art-89a945a7c47c43049a4ba76552d3e0842025-08-20T03:51:04ZzhoEditorial Office of Hydrogeology & Engineering GeologyShuiwen dizhi gongcheng dizhi1000-36652025-07-0152410912010.16030/j.cnki.issn.1000-3665.202502032202502032Identification of karst water inflow sources in the main shaft of Lianhuashan, Jingxiang phosphate mine, Hubei ProvinceSi XU0Yang YU1Peipei LIAO2Zuxu CAI3Jiaqianlin LIU4Yanmei CHEN5College of Resources and Environment, Yangtze University, Wuhan, Hubei 430100, ChinaCollege of Resources and Environment, Yangtze University, Wuhan, Hubei 430100, ChinaCollege of Resources and Environment, Yangtze University, Wuhan, Hubei 430100, ChinaCollege of Resources and Environment, Yangtze University, Wuhan, Hubei 430100, ChinaCollege of Resources and Environment, Yangtze University, Wuhan, Hubei 430100, ChinaCollege of Resources and Environment, Yangtze University, Wuhan, Hubei 430100, ChinaKarst mining areas are characterized by pronounced heterogeneity due to extensive karst development, making them particularly susceptible to water inrush and groundwater contamination during deep extension mining. During the construction of the main shaft in Lianhuashan, the construction progress was slow because of being troubled by water inrush problems. This study identified the water-filling sources and main runoff paths of the main shaft by analyzing the hydrochemical data and isotope data before and after the pumping tests of the main shaft and surrounding hydro-holes and combining with high-precision field tracer experiments. The results show that the groundwater in drilling hole ZK02 within the Lianhuashan mining section is continuously replenished by the leakage of leachate from the southern phosphogypsum slag yard, with hydrochemical type of SO4—Mg•Ca. The hydrogen and oxygen isotopes show that atmospheric precipitation is one of the main water-filling sources of regional groundwater. After the main shaft pumping, the hydrochemical type changes from HCO3•SO4—Mg•Ca to SO4•HCO3—Mg•Ca, indicating that the drawdown funnel formed by pumping promotes the joint replenishment of the karst water of ZK01 and the leachate-polluted water of ZK02 to the main shaft. The tracer test reveals that the groundwater flow direction is from the slag yard→ZK02→ZK03→the main shaft. Regional flow is predominantly from the south, and under the structural influence of the F13 fault, leachate migrates along the Zhangjiachong syncline axis toward the F09 fault, eventually discharging through the main shaft along its dip direction. This study can provide a scientific basis for the prevention and control of karst water hazards, groundwater pollution, and the management of water resource development and utilization in the main shaft.https://www.swdzgcdz.com/en/article/doi/10.16030/j.cnki.issn.1000-3665.202502032lianhuashan mining areakarst groundwaterhydrochemical characteristicstracer experimentisotopewater-filling sources analysis |
| spellingShingle | Si XU Yang YU Peipei LIAO Zuxu CAI Jiaqianlin LIU Yanmei CHEN Identification of karst water inflow sources in the main shaft of Lianhuashan, Jingxiang phosphate mine, Hubei Province Shuiwen dizhi gongcheng dizhi lianhuashan mining area karst groundwater hydrochemical characteristics tracer experiment isotope water-filling sources analysis |
| title | Identification of karst water inflow sources in the main shaft of Lianhuashan, Jingxiang phosphate mine, Hubei Province |
| title_full | Identification of karst water inflow sources in the main shaft of Lianhuashan, Jingxiang phosphate mine, Hubei Province |
| title_fullStr | Identification of karst water inflow sources in the main shaft of Lianhuashan, Jingxiang phosphate mine, Hubei Province |
| title_full_unstemmed | Identification of karst water inflow sources in the main shaft of Lianhuashan, Jingxiang phosphate mine, Hubei Province |
| title_short | Identification of karst water inflow sources in the main shaft of Lianhuashan, Jingxiang phosphate mine, Hubei Province |
| title_sort | identification of karst water inflow sources in the main shaft of lianhuashan jingxiang phosphate mine hubei province |
| topic | lianhuashan mining area karst groundwater hydrochemical characteristics tracer experiment isotope water-filling sources analysis |
| url | https://www.swdzgcdz.com/en/article/doi/10.16030/j.cnki.issn.1000-3665.202502032 |
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