摘要
以滹沱河冲洪积扇为研究区,基于地下水背景值进行劣质劣变水评价,尝试区分地下水所受到的外界胁迫作用类型,划分不同类型水的分布范围,并结合人类活动要素验证评价结果的可靠性。在此基础上,利用因子分析技术进一步分析归纳地下水水质的具体胁迫方式。评价结果表明:一级劣变水区面积占整个研究区的65.9%,二级劣变水区占15.7%,研究区大部分区域在人为活动影响下其地下水水质朝恶化方向发展。胁迫作用分析表明:一级劣变水主要受过量抽取地下水作用影响,改变了天然水化学场,并引起区内含盐水平整体增高;二级劣变水主要受生活和工业废水、养殖场和垃圾场渗滤液等污染物输入影响,使地下水遭受较严重的污染;此外,铁离子为研究区天然劣质组分,主要受地层岩性、水文地质条件等天然因素控制,并在人为污染输入的影响下部分地区浓度值超过其背景值上限,发生了进一步劣变。
Taking the Hutuo River alluvial fan as an example,this study uses the inferior and deterioration water evaluation method,based on the groundwater background values,to differentiate the type of external stress effect on groundwater and to divide the distribution range of different types of water.The reliability of the evaluation results is verified by human activities.The evaluation results show that the first grade deteriorated water area accounts for 65.9%of the total area,and the second grade water area accounts for 15.7%,which indicates that the groundwater quality of most areas in the study area tends to deteriorate under the influence of human activities.In order to further summarize the specific stress modes of groundwater quality,the main factors extraction are carried out in the factor analysis.The results show that the main stress of the first grade deteriorated water is the change in hydrogeochemical field due to ground water over-exploitation,which caussd an overall increase in salt content in groundwater.The second grade deteriorated water is mainly affected by the input of pollutants such as domestic and industrial wastewater,farms and landfill leachate.In addition,ion is the natural inferior component in the study area,which is affected by the natural factors such as lithology and hydrogeological conditions,and its concentration exceeds the upper limit of the background value in some areas under the influence of human activities,and further deterioration has occurred.
作者
张小文
何江涛
刘丹丹
倪泽华
张昌延
ZHANG Xiaowen;HE Jiangtao;LIU Dandan;NI Zehua;ZHANG Changyan(Key Laboratory of Water Resources and Environmental Engineering,School of Water Resources and Environment,China University of Geosciences(Beijing),Beijing 100083,China;Institute of Hydrogeology and Environmental Geology,Chinese Academy of Geological Sciences,Shijiazhuang,Hebei 050061,China)
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2018年第5期48-56,共9页
Hydrogeology & Engineering Geology
基金
中国地质调查局项目(DD20160309)
关键词
滹沱河冲洪积扇
劣质劣变评价
胁迫作用
Hutuo River alluvial fan
inferior and deterioration water evaluation
stress effect
