云南鹤庆西山岩溶地下水同位素及水化学分析  

Isotope and hydrochemical analysis of karst groundwater in Xishan,Heqing,Yunnan province

作　　者：张文章[1] 王锦国[1] 陈舟[1] 

机构地区：[1]河海大学地球科学与工程学院,南京210098

出　　处：《工程勘察》2015年第3期51-56,共6页Geotechnical Investigation & Surveying

基　　金：国家自然科学基金资助项目(41172204);国家自然科学基金资助项目(41102144)

摘　　要：本文采用同位素和水化学分析的方法对鹤庆西山地区岩溶地下水循环特征进行了分析。根据区内水文地质边界条件,将研究区划分为5个岩溶水系统。利用氢氧同位素的分析结果,建立地表水与地下水的δD-δ18O关系曲线,分析地下水与地表水体的相互关系,并结合水化学分析方法对岩溶地下水水化学特征与地层岩性的关系进行了研究。结果表明,研究区地表水与地下水联系紧密,大气降水通过鹤庆西山地区地表岩溶洼地等补给地下水,区内地下水化学组分以Ca2+、Mg2+和HCO-3为主,水化学类型多为HCO3-Ca·Mg,少数水样水化学类型为HCO3-Ca,与岩溶水系统划分及地层岩性分布是一致的。The karst groundwater circulation characteristics in Xishan area,Heqing,Yunan province are analyzed by isotopic and geochemical methods.The study area is divided into five karst water system according to the hydrogeological boundary conditions.Establishing the δD-δ18O curve of the surface water and groundwater by the analysis results of hydrogen and oxygen isotope,combining the hydrochemical analysis results,the relationships between groundwater and surface water is analysed.The result shows that there is a close connection between surface water and groundwater.The karst groundwater is mainly recharged by the rainfall.The groundwater in the area is mainly consist of Ca2 +,Mg2 +and HCO-3.The most hydrochemical type is HCO3-Ca·Mg,a small portion is HCO3-Ca which is consistent with the karst water system division and lithology distribution.

关 键 词：地表水 泉水 氢氧同位素 水化学 

分 类 号：P641.3[天文地球—地质矿产勘探]