罗北凹地富钾卤水中锂、硼的空间分布和富集规律研究

Study on the spatial distribution and enrichment regularities of lithium and boron in potassium-rich brine in Luobei depression

中文关键词:  罗北凹地，锂（Li），硼（B）， SOM-KM， 富集规律

英文关键词:Luobei depression  Li  B  SOM-KM  enrichment regularity

中文摘要:

      文章基于自组织神经网络（SOM）和Kmeans耦合(SOM-KM)方法，利用罗北凹地65组富钾卤水水化学数据，对富钾卤水中锂(Li)和硼(B)资源空间分布和富集规律进行了系统性研究。研究发现富钾卤水中Li, B含量表现出一定的垂向分异性，自上而下B浓度增高， Li浓度降低。聚类结果表明，罗北凹地富钾卤水可聚为4类，各类地下水中Li、B浓度具有明显的空间差异性，高浓度的Li、B集中分布在罗北凹地中东部区域。此外，水化学特征离子分析结果表明，罗北凹地富钾卤水中Li、B元素富集主要受到蒸发浓缩及盐岩溶滤作用控制。

英文摘要:

      Based on self-organizing neural network ( SOM ) and Kmeans (SOM-KM)coupling method, the spatial distribution and enrichment of Li and B resources in potassium-rich brine were systematically studied by using 65 groups of potassium-rich brine hydrochemical data in Luobei depression. The study found that the concentration of Li and B in potassium-rich brine showed a certain vertical differentiation. From top to bottom, the concentration of B increased and the concentration of decreased. The clustering results show that the potassium-rich brine in the Luobei depression can be clustered into four categories. The concentrations of Li and B in various groundwater have obvious spatial differences, and the high concentrations of Li and B are concentrated in the central and eastern regions of the Luobei depression. In addition, the results of hydrochemical characteristic ion analysis show that the enrichment of Li and B elements in potassium-rich brine in Luobei depression is mainly controlled by evaporation concentration and salt rock lixiviation.