基于DRECT的地下水脆弱性评价  

Vulnerability assessment of groundwater based on DRECT

作　　者：王新敏 尹小彤 

机构地区：[1]重庆市地勘局南江水文地质工程地质队,重庆401147

出　　处：《湖南科技大学学报（自然科学版）》2011年第2期69-73,共5页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：国家十一五科技支撑计划重点项目(2006BAB14B04)

摘　　要：地下水库的建设可以有效改善区域供水的紧张局面,但库区地下水的脆弱性决定了城市供水风险.根据传统DRASTIC评价方法存在的不足和地下水库特征提出了库区地下水脆弱性DRECT评价方法,利用层次分析法确定各因子的权重.并将该方法应用于滹沱河地下水库脆弱性评价中,得出脆弱性评价分区图,分析各分区的脆弱性特征,并与表征地下水污染程度的硝酸盐氮空间分布特征进行对比,发现受人为因素和水文地质条件的影响表现出相反的分布趋势.Construction of groundwater reservoir improve the regional water supply tensions effectively,but vulnerability of groundwater reservoir determines the risk of urban water supply.Based on existing shortage of traditional DRASTIC evaluation,a new method named DRECT was used considering the characteristics groundwater reservoir,and the weight of each factor was determined by AHP method.Application of DRECT in Hutuo River Groundwater Reservoir show that,DRECT is used for vulnerability assessment,and it found that,vulnerability assessment result and nitrate spatial distribution show different trend ascribe to the artificial influence factors and hydro-geological conditions.

关 键 词：地下水库 脆弱性评价 层次分析法 硝酸盐 

分 类 号：P641.8[天文地球—地质矿产勘探]