陕西“二华”地区浅层地下水循环特征分析.pdf

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1、第35卷第8期人民黄河Vo1．35．No．82013年8月YELLOWRIVERAug．，2013【水资源·水环境】陕西“二华”地区浅层地下水循环特征分析赖坤容，刘秀花，周维博(长安大学环境科学与工程学院，陕西西安710054)摘要：运用环境同位素和水化学成分作为水循环研究的示踪剂，揭示了陕西“二华”(华县、华阴)地区浅层地下水循环特征。通过现场调查并对浅层地下水采样，进行室内水化学和氢氧同位素组成测定，分析了浅层地下水氢氧同位素和水化学组成的空间分布规律。结果表明：研究区浅层地下水8O、8D分布规律反映降水是浅层地下水主要补给源

2、，其径流方向为由南向北，渭河沿岸地区存在地下水漏斗区，渭河河水侧向补给该区域；水化学特征表现为研究区渭河沿岸水质矿化度较高，为微成水分布区，靠近秦岭山前、研究区中部矿化度较低，为淡水分布区；研究区地下水硬度普遍偏大，其中下庙街、华阴农场、七连、夫水一带为极硬水分布区，整体上从南向北，水质从硬水过渡到极硬水。关键词：地下水循环；环境同位素；水化学成分；陕西“二华”地区中图分类号：P641．3文献标志码：Adoi：10．3969／j．issn．1000—1379．2013．08．011CharacteristicsofShallowG

3、roundwaterCycleinHuaxianandHuayinAreasofShaanxiLAIKun—tong，LIUXiu—hua，ZHOUWei—bo(SchoolofEnvironmentScienceandEngineering，Chang’anUniversity，Xi’all710054，China)Abstract：ByusingenvironmentalisotopesandhydrochemicMcomponentsastracersinsurveyingwatercirculation，thispaper

4、revealedtheshallowgroundwatercirculationcharacteristicsinHuaxianandHuayinareasofShaanxi．Byfieldsurveyingandgroundwatersamplingintheshallowanddeepaquifers，thehydrochemistryandhydrogenandoxygenisotopecomponentsweremeasured．Thenthespatialdistributionruleandevolvementtend

5、encyof8D．8Oandhydrochemicalcomponentsoftheshallowgroundwaterwereanalyzedforrevealingthegroundwatercyclecharacteristicsofthearea．Theresultsindicatethat：themainrechargesourceoftheshallowgroundwaterinthepiedmontregionisprecipitation，therunofisfromthesouthtothenorth．there

6、aregroundwaterdepressionconesalongtheWeiheRiverandtheareaaresupplied．Thehydrochemicalcharacteristicsofthegroundwatermanifestthatthemineralizationishigh，SOisthebrackishwaterdistributionareas．Onthecontrary，theTDSislownearthepiedmontofQinlingMountainandinthecentralofther

7、esearcharea，wherearefreshwaterdistributionareas．ThewaterhardnessisgenerallyhighinresearchareawhereXiamiaojie，HuayingFarm，QilianandFushuiareextremelyhardwaterdistributionareas．Ingeneral，fromsouthtonorth，waterqualitychangesfromhardwatertoextremelyhardwater．Keywords：grou

8、ndwatercycle；environmentalisotopes；hydmchemistry；HuaxianandHuayinareasofShaanxi陕西省华县与华阴连接的低洼地带(简称“二华”地区)，笔者通过现场调查，采集地下水水样，测定