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为了研究平顶山十矿各含水层的水化学特征差异,检测分析了地下水中天然有机质含量和荧光特性的垂向分布规律。结果表明:天然有机质含量在垂向上先急剧减少后逐渐稳定,且浅部含水体与深部含水层存在显著的有机质含量差异,深部含水层之间则难以区分;浅部含水体中有机质含量高,各荧光指纹区的荧光峰均有显现,且荧光峰强度较高,第四系水中各荧光峰强度略小于地表水;深部含水层中,荧光峰数量与含水层深度成负相关,Ⅱ区和Ⅳ区的荧光峰强度先增加后减小,其他荧光峰的强度则逐渐减小。研究表明,利用天然有机质含量和荧光特性,能够建立各含水层在垂向上的水化学特征。
In order to study the differences of hydrochemical characteristics of each aquifer in Pingdingshan No.10 Mine, vertical distribution of natural organic matter content and fluorescence characteristics in groundwater was analyzed. The results showed that the content of natural organic matter decreased sharply and then gradually stabilized in the vertical direction. There was a significant difference in organic matter content between the shallow aquifer and the deep aquifer, while the difference between the deep aquifers was indistinguishable. The content of organic matter in the shallow aquifer was high, Fluorescence peaks of all the fluorescent fingerprints were observed, and the fluorescence peak intensity was high. The intensity of each fluorescence peak in Quaternary water was slightly less than that of surface water. In deep aquifers, the number of fluorescence peaks was negatively correlated with the depth of aquifer. The intensity of the fluorescence peak in region Ⅳ first increased and then decreased, while the intensity of other fluorescence peaks decreased gradually. Studies have shown that the use of natural organic matter content and fluorescence characteristics, can establish the vertical aquatic chemical characteristics of aquifers.