加权优序法在地下水水质评价中的应用

权优序法是一种地下水水质多目标评估与决策的方法,利用三标度的改进层次分析,能够减少传统的层次分析法构造判别矩阵的主观性,通过运用数学变换将判断矩阵进行一致化,保证了判断矩阵一致性的准确性,给出了确定权重系数的计算方法,并通过实例进行验证,将结果与传统的层次分析法结果进行比较。结果表明:改进的三标度权重确定方法操作简便,结果切合实际,可有效降低确定权重时的主观性和盲目性。基于改进AHP加权优序法计算简便,能够对样本的地下水水质等级给出合理的水质类别,值得推广应用。

Application of weighted priority order method in assessment of groundwater quality

Weighing order method is a kind of efficient method of multi objective evaluation and decision for groundwater quality. Based on three-mark improved hierarchy analysis,the method could reduce the subjectivity of constructing judge matrix through traditional hierarchy analysis method. Through application of mathematical transformation and making consistency of judgment matrix, which can ensure the accuracy and consistency of judgment matrix The paper gave the calculation method of determining weighted index.Through verification of practical example,it compared the result with that of traditional hierarchy analysis method.The result indicated that the operation of the method of improved three-mark weighing determination is simple and in accordance with practice. The method can effectively reduce subjectivity and blindness when determining weight. The calculation of weighted priority order method is simple and can give reasonable category of water quality for groundwater sample and is worthy of popularization and application.