基于改进DRASTIC模型的江苏沿海地区浅层地下水防污性能评价  

Evaluation on the antifouling performance of shallow groundwater in Jiangsu coastal areas based on improved DRASTIC model

作　　者：刘源[1] LIU Yuan(Geological Survey Institute of Jiangsu Province,Nanjing 210018,China)

机构地区：[1]江苏省地质调查研究院,南京210018

出　　处：《黑龙江环境通报》2023年第2期82-84,共3页Heilongjiang Environmental Journal

摘　　要：地下水防污性能能够反映地下水抵抗外来污染的能力,笔者结合江苏沿海地区的水文地质条件,通过优化指标来改进传统DRASTIC模型,选取地下水位埋深、包气带岩、含水砂层的岩性和含水砂层厚度作为评价指标;利用层次分析法来合理计算各评价指标的权重系数;评价得出工作区防污性能好的面积约为7267.19km^(2);防污性能较好的面积约为4675.98km^(2);防污性能中等的面积约为9820.30km^(2);防污性能较差的面积约为7096.19km^(2);防污性能极差的面积约为1830.18km^(2)。The anti-fouling performance of groundwater can reflect the ability of groundwater to resist external pollution.In this paper,combined with the hydrogeological conditions of Jiangsu coastal areas,the traditional DRASTIC model is improved by optimizing the indicators.The depth of groundwater level,vadonna rock,lithology of water-bearing sand layer and thickness of water-bearing sand layer are selected as evaluation indicators.The weight coefficient of each evaluation index is calculated by AHP.The working zone area with good antifouling performance is about 7267.19km^(2).The area with good antifouling performance is about 4675.98km^(2);the area with medium anti-pollution performance is about 9820.30km^(2);the area with poor anti-pollution performance is about 7096.19km^(2);the area with poor antifouling performance is about 1830.18km^(2).

关 键 词：地下水 防污性能 DRASTIC 评价指标 

分 类 号：X824[环境科学与工程—环境工程]