摘要
在武汉市某地热田地质和地热背景条件的基础上,根据室内实验测试成果,分析地热流体的主要化学成分特征,探讨其形成机制。研究表明,地热流体属于中性偏碱性中硬水,水化学类型为HCO3-Ca型水,与相邻地段一般地下水水化学成分无明显的差异,地热流体同位素特征与大气降水类似。地热流体主要是由大气降水入渗后经深部循环,然后与浅部一般地下水混合而形成。
On the basis of summarizing the geological and geothermal background conditions of the geothermal field in Wuhan city,combining the laboratory test results,the authors analyzed the characteristics of the main chemical composition of the geothermal fluids,and discussed its formation mechanism. Research results show that the geothermal fluid belongs to the kind of neutral-alkaline hard water,the hydrogenchemical types is HCO3-Ca,and the hydrochemical composition has no obvious difference between it and the groundwater in adjacent areas; and the isotopic characteristics of geothermal fluids are similar to that of atmospheric precipitation. This geothermal fluids is mainly formed by the deep circulation of meteoric water,and then mixed with the shallow groundwater.
出处
《资源环境与工程》
2016年第5期738-741,共4页
Resources Environment & Engineering
关键词
地热流体
水化学特征
氢氧同位素
geothermal fluids
hydrochemical characteristics
hydrogen-oxygen isotopes
