水利水电技术2017，Vol.48Issue(5)：43-49,7.DOI:10.13928/j.cnki.wrahe.2017.05.007
天津市平原区第Ⅰ含水岩组地下水脆弱性评价研究
Study and assessment on vulnerability of groundwater from No.Ⅰ aquifer group in plain area of Tianjin
摘要
Abstract
The zoning assessment on groundwater vulnerability is an important basic work for reasonable development and utilization of groundwater resources and prevention of groundwater pollution.The conventional DRASTIC method has a certain defect,i.e.endowing the assessment parameters with fixed empirical weights.The method for determining the weights is modified with the method of integrating both the entropy weight method and the analytic hierarchy process (AHP) together,and then a case study is carried out by taking the groundwater from the No.Ⅰ aquifer group in the plain area of Tianjin as the study object.The weight values of three items of assessment parameters,such as larger impacting degree,net recharge with more decentralized initial data,groundwater depth and aeration zone types,are protruded by the DRASTIC method with the modified weights,while the gradiemt parameters with less impact and less differences among the initial data in all the assessment units are omitted by the method as well.The result shows that the area ratios of lower groundwater vulnerability subzone,moderate-lower vulnerability groundwater subzone,moderate-higher groundwater vulnerability subzone,higher groundwater vulnerability subzone and high groundwater vulnerability subzone are 1.3％、22.3％、42.6％、31.2％、2.6％ respectively,for which the specific distribution is better coincided with that from the actual condition.The DRASTIC method with modified weights can take account of both the distribution characteristics of the indicator data and the empirical values of the weights,thus has reference value for assessment made on groundwater vulnerability.关键词
地下水/脆弱性评价/DRASTIC方法/熵权法/层次分析法/天津市Key words
groundwater/vulnerability assessment/DRASTIC method/entropy weight method/analytic hierarchy process (AHP)/Tianjin City引用本文复制引用
李绍飞,李冠佑,余萍,闫冬..天津市平原区第Ⅰ含水岩组地下水脆弱性评价研究[J].水利水电技术,2017,48(5):43-49,7.基金项目
天津市科委应用基础与前沿技术重点项目(15JCZDJC41400) （15JCZDJC41400）
天津农学院科技发展基金(2014N05) （2014N05）
