密切值法在无锡市浅层地下水水质评价中的应用

Application of osculation value method in the shallow groundwater quality evaluation in the Wuxi City

密切值法是多目标决策的一种优选方法,本文详细阐述了密切值法在水质评价中的原理、方法与步骤,并以无锡市浅层地下水为例,通过计算出di+、di-和密切值Ei,确定样品的水质等级。评价结果表明,无锡市浅层地下水水质较差,遭受到了外来物质的污染,评价结果客观反映了无锡市浅层地下水的现状,为浅层地下水的污染防治和科学管理提供了科学依据。

The osculation value mehtod is an optimal method for the multi-aims decision. This paper elaborated on the principle, method and steps of the osculation value method in groundwater quality evaluation. And taking the shallow groundwater of Wuxi City as example, this paper discussed how to calculate the di^＋ , di^- and Ei , gained the quality degree of shallow groundwater. The results showed, the quality of shallow groundwater in Wuxi City is poor in all, had been polluted by outer material, which provided the science foundation for the pollution prevention and management of shallow groundwater.