摘要
岩溶水中一般含有Sr2+,且其浓度会随着径流途径的延长而增大,在埋藏滞留区最大,相应的ρ(Ca)/ρ(Sr)、ρ(Mg)/ρ(Sr)值也最小。依据这一规律分析了以碳酸盐岩为热储层的郑庄地热异常区浅部地下水中ρ(Ca)/ρ(Sr)、ρ(Mg)/ρ(Sr)值的分布特征,发现ρ(Ca)/ρ(Sr)、ρ(Mg)/ρ(Sr)值异常区域与浅部地下水水温异常区域非常一致,ρ(Ca)/ρ(Sr)、ρ(Mg)/ρ(Sr)值与地下水水温呈线性关系,随着地下水水温的升高,其ρ(Ca)/ρ(Sr)、ρ(Mg)/ρ(Sr)值减小,表明ρ(Ca)/ρ(Sr)、ρ(Mg)/ρ(Sr)值对岩溶型低温地热田的地热异常具有良好的示踪意义。
Karstic water normally consists of Sr^(2+), and whose concentration increases with the increase of running path.It reaches the maximum in disposal area where the values of ρ(Ca)/ρ(Sr),ρ(Mg)/ρ(Sr) are minimum. Based on the theory,analyse the distribution characteristics of ρ(Ca)/ρ(Sr),ρ(Mg)/ρ(Sr) values of shallow groundwater in the abnormal region of Zhengzhuang geothermal heat. The results show the abnormity region of the values is similar with the region of water temperature abnormity.The values of (ρ(Ca)/)ρ(Sr),ρ(Mg)/ρ(Sr) are linearly dependent with water temperature, and the values of (ρ(Ca)/)(ρ(Sr)),ρ(Mg)/ρ(Sr) decrease when the water temperature increases. It is clear that the values of (ρ(Ca)/)(ρ(Sr)),ρ(Mg)/ρ(Sr) can work as the indicator for the analysis of geothermal abnormity of karst thermal water with low temperature.
出处
《地质科技情报》
CAS
CSCD
北大核心
2004年第4期105-108,共4页
Geological Science and Technology Information
基金
国家自然科学基金资助项目(90202006)
