宁夏灵武面子山山前区地下水中氟的富集及分布规律探讨

研究区东部属低山丘陵区及山前侵蚀堆积阶地，西部为黄河冲、洪积平原区，地下水资源丰富．是灵武矿区的主要水源地，但由于地下水中氟离子含量较高，给地下水的利用带来了影响。通过对该区水文地质条件和地下水中氟的水文地球化学特征的研究，认为研究区地下水中氟的含量与水化学类型关系不明显，与PH值及钠／钙值呈正相关关系。初步探讨了影响地下水中氟含量的富集因素及分布规律，研究发现：区内潜水含水层氟含量变化大，常发生突变；承压水含水层则多呈渐变形式；地下水中氟含量的高低主要与补给源中氟含量的高低有关．

Probe into Underground Water Fluorine Enrichment and Distribution Pattern in Mianzishan Foreland,Lingwu

The eastern part of study area belongs to foreland destructive built terrace in hilly area; while the western part is Yellow River alluvial-pluvial plain with abundant underground water resource, thus a main water head site for the Lingwu mining area. But because of high fluorine ionic content has reflected on underground water utilization. Through studies on hydrogeological condition and underground water fluorine hydrogeochemical features in the area, found that the relation between underground water fluorine content and hydrochemical types is not clear, while positively correlated with pH and Na/Ca ratio values. The paper discussed underground water fluorine enrichment factors and distribution pattern tentatively, found that the volatile fluorine content in groundwater aquifer can make abrupt change often, while in confined aquifer is gradual changed. The fluorine content in underground water is related to fluorine content in source of replenishment.