摘要
以国土资源部地下水科学深州基地80 m范围内的4眼综合试验井为研究对象,通过开展同位素分析,讨论了浅层地下水氢氧同位素及硼同位素组成,确定了咸水、微咸水的来源。研究表明:咸水、微咸水的氢氧同位素普遍偏负,其数值均未超出海相成因咸水δ^(18)O和δD的特征值,咸水δ^(11)B‰明显低于海水的δ^(11)B‰值并介于海水和陆相淡水的δ11B‰值之间,该数值表明了区域地下水的陆相成因;经计算两微咸水含水层咸水混入比例呈逐年增加的趋势,这与含水层TDS及Cl^-含量增加显示出的咸化呈现一致的情况,进一步证明了研究区微咸水出现了一定程度的咸化。
This paper discussed hydrogen and oxygen isotopes and boron isotope of shallow groundwater and determined the sources of brackish water and salt water,which used the 4-hole comprehensive test well within 80 m of the aquifers of different depths in groundwater science and engineering experimental site of ministry of land and resources as the object of studying.The results show that the values of hydrogen and oxygen isotopes of salt water and brackish water in the area are generally negative,and the values of δ^11（18）O and δD do not exceed the characteristic values of marine saltwater.The δ^11B‰ value is between δ^11B‰ of seawater and continental freshwater and obviously lower than δ^11B‰ in seawater.It proves the terrestrial origin of regional groundwater.The results show that the mix ratio of salty water in two brackish aquifers is increasing yearly by calculations,which is consistent with the increase of TDS and Cl-in the aquifer.Furthermore,it is proved that the brackish water in the study area tended to be more salty to some extent.
作者
冯欣
高业新
张冰
崔浩浩
张亚哲
FENG Xin;GAO Yexin;ZHANG Bing;CUI Haohao;ZHANG Yazhe(The Institute of Hydrogeology and Environmental Geology, Shijiazhuang 050061, China)
出处
《水资源与水工程学报》
CSCD
2018年第2期39-44,共6页
Journal of Water Resources and Water Engineering
基金
国土资源部公益性行业专项(200911004)
地科院水环所基本科研业务费(SK201301)
中国地质科学院基金项目(YYMF201624)
关键词
浅层地下水
氢氧同位素
硼同位素
地下水咸化
深州地区
shallow groudwater
hydrogen and oxygen isotopes
boron isotopes
salinization of groundwater
Shenzhou Area
