Identification and genetic mechanism of recharge sources in groundwater-rich area of Changxiao karst water system in Jinan City
Objective and methods In this study, the hydrochemical method and self-organized neural network (SOM-KM) coupling method were employed to identify recharge sources and reveal the water-rich mechanism in the karst groundwater-rich area of the Changxiao karst water system in Jinan City. The contributi...
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Editorial Department of Bulletin of Geological Science and Technology
2024-11-01
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| Series: | 地质科技通报 |
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| Online Access: | https://dzkjqb.cug.edu.cn/en/article/doi/10.19509/j.cnki.dzkq.tb20240122 |
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| author | Yi LIU Fengxin KANG Wenqiang ZHANG Qingyu XU Peng QIN Qiang ZHAO Jialong LI Yang CUI Haibo SUI Tingting ZHENG |
| author_facet | Yi LIU Fengxin KANG Wenqiang ZHANG Qingyu XU Peng QIN Qiang ZHAO Jialong LI Yang CUI Haibo SUI Tingting ZHENG |
| author_sort | Yi LIU |
| collection | DOAJ |
| description | Objective and methods In this study, the hydrochemical method and self-organized neural network (SOM-KM) coupling method were employed to identify recharge sources and reveal the water-rich mechanism in the karst groundwater-rich area of the Changxiao karst water system in Jinan City. The contribution ratio of karst groundwater recharge sources in the karst groundwater-rich area was quantitatively calculated using the end-element mixed model. The enrichment mechanism of karst groundwater is explored by combining with topography, geological structure, stratigraphic lithology, and catchment conditions. Results The results showed that the karst groundwater in the catchment drainage area had similar water chemistry to that in the southern recharge area, the karst groundwater in the lateral runoff area, and the Yellow River, indicating a close hydraulic connection. This implies that the karst groundwater in the catchment drainage area is recharged by three sources: The southern mountain area, the karst groundwater in the lateral runoff area, and the Yellow River. The contribution ratios of the three components are 75.09%, 21.02%, and 3.89%, respectively. Carbonate rocks are widely distributed, and fissured karst is well developed in the accumulation and discharge areas, especially in the Maji-Xiaoli-Guide area. Moreover, there are abundant karst groundwater recharge sources in this area. During the runoff process of karst groundwater from southeast to northwest, it is impeded by sandstone and mudstone in the north. As a result, it accumulates in the contact zone between soluble rock and insoluble rock, thus forming impeded-type karst groundwater-rich structures. Conclusion Revealing the enrichment mechanism of karst groundwater in the Changxiao karst water system can provide scientific support for accurate calculations of recoverable resources and the protection of the springs in Jinan. |
| format | Article |
| id | doaj-art-c3341c630b044688b2bce786eca389f1 |
| institution | OA Journals |
| issn | 2096-8523 |
| language | zho |
| publishDate | 2024-11-01 |
| publisher | Editorial Department of Bulletin of Geological Science and Technology |
| record_format | Article |
| series | 地质科技通报 |
| spelling | doaj-art-c3341c630b044688b2bce786eca389f12025-08-20T02:36:15ZzhoEditorial Department of Bulletin of Geological Science and Technology地质科技通报2096-85232024-11-0143629230510.19509/j.cnki.dzkq.tb20240122dzkjtb-43-6-292Identification and genetic mechanism of recharge sources in groundwater-rich area of Changxiao karst water system in Jinan CityYi LIU0Fengxin KANG1Wenqiang ZHANG2Qingyu XU3Peng QIN4Qiang ZHAO5Jialong LI6Yang CUI7Haibo SUI8Tingting ZHENG9College of Water Conservancy and Environment, Jinan University, Jinan 250022, ChinaCollege of Water Conservancy and Environment, Jinan University, Jinan 250022, ChinaShandong Provincial Bureau of Geology and Mineral Exploration and Development 801 Hydrogeological Engineering Geological Brigade, Jinan 250013, ChinaShandong Provincial Bureau of Geology and Mineral Exploration and Development 801 Hydrogeological Engineering Geological Brigade, Jinan 250013, ChinaShandong Provincial Territorial Spatial Ecological Restoration Center, Jinan 250013, ChinaCollege of Water Conservancy and Environment, Jinan University, Jinan 250022, ChinaCollege of Water Conservancy and Environment, Jinan University, Jinan 250022, ChinaShandong Provincial Bureau of Geology and Mineral Exploration and Development 801 Hydrogeological Engineering Geological Brigade, Jinan 250013, ChinaShandong Provincial Bureau of Geology and Mineral Exploration and Development 801 Hydrogeological Engineering Geological Brigade, Jinan 250013, ChinaShandong Province Lunan Geological Engineering Exploration Institute, Jining Shandong 272100, ChinaObjective and methods In this study, the hydrochemical method and self-organized neural network (SOM-KM) coupling method were employed to identify recharge sources and reveal the water-rich mechanism in the karst groundwater-rich area of the Changxiao karst water system in Jinan City. The contribution ratio of karst groundwater recharge sources in the karst groundwater-rich area was quantitatively calculated using the end-element mixed model. The enrichment mechanism of karst groundwater is explored by combining with topography, geological structure, stratigraphic lithology, and catchment conditions. Results The results showed that the karst groundwater in the catchment drainage area had similar water chemistry to that in the southern recharge area, the karst groundwater in the lateral runoff area, and the Yellow River, indicating a close hydraulic connection. This implies that the karst groundwater in the catchment drainage area is recharged by three sources: The southern mountain area, the karst groundwater in the lateral runoff area, and the Yellow River. The contribution ratios of the three components are 75.09%, 21.02%, and 3.89%, respectively. Carbonate rocks are widely distributed, and fissured karst is well developed in the accumulation and discharge areas, especially in the Maji-Xiaoli-Guide area. Moreover, there are abundant karst groundwater recharge sources in this area. During the runoff process of karst groundwater from southeast to northwest, it is impeded by sandstone and mudstone in the north. As a result, it accumulates in the contact zone between soluble rock and insoluble rock, thus forming impeded-type karst groundwater-rich structures. Conclusion Revealing the enrichment mechanism of karst groundwater in the Changxiao karst water system can provide scientific support for accurate calculations of recoverable resources and the protection of the springs in Jinan.https://dzkjqb.cug.edu.cn/en/article/doi/10.19509/j.cnki.dzkq.tb20240122jinanchangxiao karst water systemkarst groundwaterrecharge source identificationwater enrichment mechanism |
| spellingShingle | Yi LIU Fengxin KANG Wenqiang ZHANG Qingyu XU Peng QIN Qiang ZHAO Jialong LI Yang CUI Haibo SUI Tingting ZHENG Identification and genetic mechanism of recharge sources in groundwater-rich area of Changxiao karst water system in Jinan City 地质科技通报 jinan changxiao karst water system karst groundwater recharge source identification water enrichment mechanism |
| title | Identification and genetic mechanism of recharge sources in groundwater-rich area of Changxiao karst water system in Jinan City |
| title_full | Identification and genetic mechanism of recharge sources in groundwater-rich area of Changxiao karst water system in Jinan City |
| title_fullStr | Identification and genetic mechanism of recharge sources in groundwater-rich area of Changxiao karst water system in Jinan City |
| title_full_unstemmed | Identification and genetic mechanism of recharge sources in groundwater-rich area of Changxiao karst water system in Jinan City |
| title_short | Identification and genetic mechanism of recharge sources in groundwater-rich area of Changxiao karst water system in Jinan City |
| title_sort | identification and genetic mechanism of recharge sources in groundwater rich area of changxiao karst water system in jinan city |
| topic | jinan changxiao karst water system karst groundwater recharge source identification water enrichment mechanism |
| url | https://dzkjqb.cug.edu.cn/en/article/doi/10.19509/j.cnki.dzkq.tb20240122 |
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