| 马小雷,张晓凯,韩宁.华北平原南部浅层含水组地下水化学特征及其影响因素分析[J].地质找矿论丛,2025,40(1):100-108 |
| 华北平原南部浅层含水组地下水化学特征及其影响因素分析 |
| Chemical characteristics of ground water in shallow aquifer and influencing factors in south north China plain |
| 投稿时间：2024-10-17 修订日期：2025-01-02 |
| DOI：10.6053/j.issn.1001-1412.2025.01.012 |
| 中文关键词: 浅层地下水 水化学 离子组分 华北平原南部 |
| 英文关键词:Shallow groundwater the south north China plain water chemistry ionic component |
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| 中文摘要: |
| 地下水是华北平原的重要工农业和生活供水水源,随着城市化进程加快及人类活动影响,区域地下水的水化学特征日趋复杂,进一步识别华北平原南部浅层地下水水质的空间分布、成因及主要影响因子是优化保护利用浅层水地下水资源的前提,对于构建包气带和浅层地下水生态安全具有重大意义。在地下水样品采集的基础上,采用数理统计分析离子浓度变化、相关性分析确定离子相关关系、Piper三线图析水化学类型、Gibbs图析离子成因以及对比地下水主要离子比值等多种方法,探究华北平原南部地区浅层水地球化学特征及成因机制。结果表明:研究区浅层地下水化学类型多样,以HCO3-Ca+Mg型和HCO3+SO4+Cl-Na为主;其水化学组成主要受自然和人为因素的双重作用控制;岩石风化和蒸发浓缩的共同作用是导致该地区浅层地下水主要离子组分特征的主要原因。方解石、白云石已接近或超过溶解度,该类矿物处于饱和状态并将发生沉淀。石膏、岩盐还未达到溶解度,该类矿物处于不饱和状态。华北平原南部浅层地下水水化学特征组分发生显著变化除受水岩相互溶解吸附作用外,还受到人类活动的影响。 |
| 英文摘要: |
| In south north China plain ground water is an important source of industrial, agricultural and domestical water supply. With accelerating urbanization and human activities chemical characteristics of the groundwater here are becoming increasingly complex. To make clear of spatial distribution of the groundwater quality and genesis of the complexity of the characteristics and the influencing factors is the prerequisite for optimizing protection and utilization of the groundwater and is significant to construction of vadose zone and eclogical seccurity of the groundwater. The groundwater sampling and analysis, mathmatical analysis of ion concentration change, correlative relationship of ion determined by correlative analysis, piper triplot analysis of chemical types of the groundwater, Gibbs diagram analysis of ion genesis and calculation and comparation of ratios of major ions are carried out to explore geochemical characteristics and the genetic mechanism of the groundwater. The result shows that multi-chemical types of groundwater of the shallow aquifer in the study area. HCO3-Ca+Mg and HCO3+SO4+Cl-Na are the main tpyes. Chemical composition of groundwater is controlled by both natural and human factors. Combination of rock weathering and evaperative concentration is the main factor to result in composition characteristics of ions in the groundwater. Calcite and dolomite are saturated or over saturated, gypsum and halite not saturated. The characteristic chemical composition change is not only influenced by interactional absorption between rock and water but also by human activities. |
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