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本文通过对该区地理环境和地质环境,特别是水文地质条件的调查和研究,发现该区高氟含量主要来自高山地区碳酸盐岩的层状交代矿床中的氟含量,以及山丘区侏罗系煤层中富集的局部氟离子,和山区岩石中存在的磷灰石、萤石、冰晶石、云母等含氟矿物质。由于地表水与地下水有着密切的水力联系,并且在运移过程中进行了多次的地表水、地下水相互转化,在此转化的过程中吸收和溶解了部分岩石中的成分,并且随着径流距离的增加,氟离子含量也越来越高。而在科克亚尔河冲洪积扇中下部一带的部分地区,地下水由偏弱碱性向弱酸性环境过渡,含水岩组中出现粘土层或粘土夹层,粘土成分多以蒙脱石、伊利石及高岭土组成,钙离子、铝化物及粘土本身对氟离子具有较强的吸附作用,遏制了地下水中氟的富集,形成了局部的低氟水带。基于这种情况,建议通过进一步的调查研究,圈定低氟区,建立开采区,实施安全供水工程,为其他各个高氟区供水。
Through the investigation and research on the geographical environment and geological environment in this area, especially the hydrogeological conditions, it is found that the high fluorine content in this area mainly comes from the fluorine content in the stratified metasomatic deposits of carbonate rocks in the alpine region, Fluoride minerals, such as apatite, fluorite, cryolite, and mica, which are enriched in the Luo coal seam, and mountain rocks. Because of the close hydraulic connection between surface water and groundwater, and the repeated surface water and groundwater conversion during the migration process, the components of some rocks are absorbed and dissolved during the conversion process, and as the runoff distance The increase of fluoride ion content is also getting higher and higher. In part of the lower part of the Kekear alluvial fan, the groundwater transition from weak alkaline to weakly acidic environment, and clay or clay intercalation occurs in the aquiferous group. Most of the clay components are montmorillonite, illite And kaolinite. Calcium ions, aluminides and clay themselves have a strong adsorption effect on fluoride ion, which restrains the enrichment of fluorine in groundwater and forms a local low-fluorine water band. Based on this situation, it is suggested that further investigation and research should be carried out to delineate low-fluorine areas, establish mining areas, implement safe water supply works and supply water to other high-fluorine areas.