Evaluation of groundwater quality has an important role in groundwater management and conservation. Addressing the uncertain characteristics of groundwater quality as affected by multiple interacting factors – and the factors being changeable, random and fuzzy – sample test data from 20 hydrogeologic boreholes in a study area in Fenggang town, Zunyi city, China were collected and a groundwater quality evaluation model was built based on set pair analysis. Through expressions of the connection degree and decomposition of the degree of discrepancy and calculation of the comprehensive fuzzy connection degree, results of groundwater quality evaluation in the study area were obtained. The reliability and validity of the model were proved by comparing the results with the actual situation. This new groundwater quality evaluation method reflects the characteristics of groundwater quality controlled by multiple factors and factor uncertainty.

中文翻译：

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基于集对分析的地下水质量评价模型及其应用

地下水质量评价对于地下水管理和保护具有重要作用。针对地下水水质受多种因素相互作用、多变、随机、模糊的不确定性特点，采集了遵义市凤岗镇研究区20个水文地质钻孔的抽样测试数据，进行了地下水水质评价模型是基于集对分析建立的。通过关联度的表达、差异度的分解以及综合模糊关联度的计算，得到了研究区地下水质量评价结果。通过与实际情况的比较，证明了模型的可靠性和有效性。