基于模糊数学理论的地下水水质评价与分析

Evaluation and Analysis of Groundwater Quality Based on Fuzzy Mathematics Theory

水环境是个复杂的动态系统,水环境质量具有确定与不确定、精确与模糊的特性,同时具有量的特征,解决这类问题时并不仅仅依靠确定性模型,往往可通过随机性模型和模糊模型来解决。以石羊河流域地下水观测井2020年9月实测数据为例,运用模糊数学理论,参照地下水环境质量标准(GB/T 14848-2017),选取主要评价因子,建立模糊关系矩阵,对石羊河流域地下水进行全面评价。结果表明:模糊综合评价模型能够客观反映水质现状,评价结果与实际相符,是一种有效可靠的评价方法。

Water environment is a complex dynamic system,and water environment quality has the characteristics of certainty and uncertainty,precision and ambiguity,and quantity at the same time.The solution of such problems can be solved not only by the deterministic model,but also by the stochastic model and the fuzzy model.Taking the measured data of groundwater observation well in Shiyang River Basin in September 2020 as an example,this paper uses fuzzy mathematics theory and refers to groundwater environmental quality standard(GB/T14848-2017),selects main evaluation factors,establishes fuzzy relationship matrix,and conducts a comprehensive evaluation of groundwater in Shiyang River basin.The results show that the fuzzy comprehensive evaluation model can objectively reflect the current situation of water quality,and the evaluation results are consistent with the reality,which is an effective and reliable evaluation method.