| 河北典型压采区地下水水化学变化特征及控制因素 |
| 摘要点击 476 全文点击 59 投稿时间：2024-03-27 修订日期：2024-06-19 |
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| 中文关键词 地下水压采 水化学特征 离子来源 控制因素 跨流域调水 |
| 英文关键词 groundwater exploitation reduction hydrochemical characteristics ion sources controlling factors inter-basin water transfer |
| 作者 | 单位 | E-mail | | 刘聪丽 | 河北工程大学水利水电学院, 邯郸 056038
河北工程大学河北省智慧水利重点实验室, 邯郸 056038 | liucongli1627@163.com | | 刘飞 | 河北工程大学水利水电学院, 邯郸 056038
河北工程大学河北省智慧水利重点实验室, 邯郸 056038 | liufei@hebeu.edu.cn | | 甄品娜 | 河北工程大学水利水电学院, 邯郸 056038
河北工程大学河北省智慧水利重点实验室, 邯郸 056038 | | | 郭晓帅 | 河北工程大学水利水电学院, 邯郸 056038
河北工程大学河北省智慧水利重点实验室, 邯郸 056038 | | | 柴宏利 | 河北工程大学水利水电学院, 邯郸 056038
河北工程大学河北省智慧水利重点实验室, 邯郸 056038 | | | 郭雁辉 | 河北工程大学水利水电学院, 邯郸 056038
河北工程大学河北省智慧水利重点实验室, 邯郸 056038 | |
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| 中文摘要 |
| 河北省开展地下水超采综合治理以来,开采量的大幅度减少必然影响区域地下水水量水质的变化趋势,压采引起的这些地下水变化,直接关系到河北地下水资源安全. 选取地下水压采效果显著的邯郸东部平原作为研究区域,综合运用多元统计、图解法和绝对主成分-多元线性回归受体模型（APCS-MLR）等方法,深入分析了压采区地下水水化学变化特征及其控制因素. 结果表明,压采区地下水水化学的变化主要受水岩作用和人类活动（农业施肥、地下水压采及跨流域调水）的共同影响. 虽然压采区地下水水质仍然表现为“上咸下淡”的垂向分布特征,但是开采量的减少在一定程度上改善了浅层地下水水质,驱动浅层地下水中的咸水向微咸水转化,咸水区分布面积由872 km2减少至310 km2,微咸水区分布面积由4 141 km2增加至4 632 km2,淡水区分布面积由2 574 km2增加至2 645 km2. 浅层地下水水化学组分主控因素分别是基于盐度的溶滤-富集因子、农业活动因子和基于碱度的地质因子,其贡献率分别为57%、17%和16%；深层承压水水化学组分主控因素分别是基于盐度的溶滤-富集因子、基于碱度的地质因子和污染物迁移因子,其贡献率分别为61%、15%和11%. 研究结果加强了对压采区地下水水化学变化特征的认识,对河北省压采区地下水资源合理开发利用有重要意义. |
| 英文摘要 |
| Due to groundwater overexploitation control in Hebei Province, the significant reduction of groundwater exploitation inevitably induces changes in regional groundwater quantity and quality. How to effectively identify these changes caused by groundwater exploitation reduction （GWER） is directly related to the safety of groundwater resources in Hebei Province. The eastern plain of Handan was selected as the study area, where groundwater restoration is remarkable. Groundwater chemical changes and controlling factors were analyzed by integrating multi-statistics, graphic method, and absolute principal component-multiple linear regression receptor model （APCS-MLR）. The results showed that the variability of groundwater chemistry in this region was mainly controlled by water-rock interaction and human activities （agricultural fertilization, GWER, and inter-basin water transfer）. Although the groundwater quality in the study area still showed the vertically distributed characteristics of “Brackish water at the top and freshwater at the bottom,” the GWER improved the shallow groundwater quality to some extent and resulted in the evolution from salt water to brackish water. The distributed area of salt water reduced from 872 km2 to 310 km2, the distributed area of brackish water increased from 4 141 km2 to 4 632 km2, and the distributed area of freshwater increased from 2 574 km2 to 2 645 km2. The main controlling factors of chemical compositions in shallow groundwater were leaching-enrichment factor based on salinity, agricultural factor, and geological factor based on alkalinity, and their contribution rates were 57%, 17%, and 16%, respectively. While the main controlling factors of chemical compositions in deep confined water were the leaching-enrichment factor based on salinity, geological factor based on alkalinity, and pollutant migration factor, and their contribution rates were 61%, 15%, and 11%, respectively. The findings deepen the understanding of changes in groundwater chemistry in GWER areas, which is of great significance to the rational development and utilization of groundwater resources in GWER areas of Hebei Province. |
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