冀东平原滨海地区浅层地下水水化学与同位素特征分析  

Hydrochemical and Isotopic Characteristics Analysis of the Shallow Ground water in Jidong Coastal Area

作　　者：刘宏伟 杨君[1] 杜东[1] 柳富田[1] 孙晓明[2] 

机构地区：[1]中国地质调查局天津地质调查中心,天津300170 [2]中国地质调查局水文地质环境地质调查中心,河北保定071051

出　　处：《地质调查与研究》2014年第2期108-114,共7页Geological Survey and Research

基　　金：中国地质大调查项目:莱州湾地质环境调查评价(12120113003800);曹妃甸环境地质调查评价(1212011120086);国土资源部公益性行业科研专项经费课题(201011019-02)

摘　　要：通过对2010年在冀东平原采集的34组水化学同位素样品进行分析,探讨了地下水K+、Ca2+、Na+、Mg2+、SO42-、HCO3-与Cl-的关系,研究了氘氧同位素特征,为该区海(咸)水入侵研究提供了基础数据。研究表明:区内浅层地下水化学类型主要分为三类,沿南北方向具有一定的规律性;山前地段地下水受到的主要影响作用为溶滤作用和离子交换吸附作用,滨海地段地下水主要为混合作用和蒸发浓缩作用影响,过渡地段地下水主要为蒸发浓缩作用影响;滨海地段地下水样品受海水混入影响明显,是海(咸)水入侵的潜在危险区。The hydrochemical and isotopic data of the groundwater are analyzed based on 34 samples taken from coastal area, Jidong plain in 2010. The relationships among K^＋, Ca^2＋, Na^＋, Mg^2＋, SO4^2-, HCO3^- and Cl^- are discussed. Meanwhile, the relationship between D and O18 was analyzed, which provided the data base for sea （salty） water intrusion research. The results show that there are three kinds of hydrochemical types for shallow groundwater which have a regular distribution along SN direction. The characteristics of groundwater are mainly affected by leaching and evaporation in piedmont zone, by mixing and evaporation in coastal zone, and by evaporation in the transitional zone. Samples are affected by seawater mixing in coastal area, which indicates a potential dangerous zone for saltwater intrusion.

关 键 词：水化学 氘氧同位素 浅层地下水 冀东平原 

分 类 号：P641.3[天文地球—地质矿产勘探]