地质通报2026，Vol.45Issue(5)：851-869,19.DOI:10.12097/gbc.2024.11.001
关中盆地临潼华清池地热田水化学特征及成因机制
Hydrochemical characteristics and genesis mechanism of the geothermal field at Huaqingchi in Lintong,Guanzhong Basin
摘要
Abstract
[Objective]The Huaqingchi geothermal field in Lintong is located in the central-eastern part of the Guanzhong Basin,with abundant geothermal resources.However,due to the low level of research in the study area,the development of geothermal resources lacks a theoretical basis,which has led to problems such as insufficient utilization of geothermal resources and declining water levels caused by over-exploitation.In response to these issues,further research is required.[Methods]This paper conducts a comprehensive analysis of the Huaqingchi geothermal field using hydrogeochemical methods and stable isotope methods.[Results]The hydrochemical types of geothermal field geothermal water in Huaqingchi are mainly HCO3·Cl-Na,SO4·Cl-Na and Cl-Na types,the transformation of ionic components is primarily controlled by the dissolution of silicate minerals and evaporite minerals,as well as cation exchange and adsorption processes.Hydrogen and oxygen isotope data indicate that no significant"oxygen drift"phenomenon is observed in the geothermal water of the study area,which suggests a weak intensity of water-rock interaction and implies that the geothermal water is in a relatively open environment.Combined with isotope analysis results,atmospheric precipitation in the Lishan Mountain area is identified as the primary recharge source of the geothermal water,with the calculated recharge elevation ranging from 426.27 m to 1032.15 m.By employing multiple geothermometric methods and relevant analytical approaches,the thermal reservoir temperature of the Huaqingchi geothermal field is estimated to be 53.90～110.59℃,and the circulation depth is determined to be 1393.30～2751.27 m.Based on the aforementioned data and comprehensive analysis,a genetic conceptual model of the Huaqingchi geothermal field has been established.[Conclusions]The Huaqingchi geothermal field is a convective-conductive composite low-to-medium temperature geothermal system,where heat transfer is mainly dominated by the coupling of convection and conduction.This geothermal field possesses a unique genetic model characterized by bed-controlled geothermal reservoirs,lateral runoff recharge,and an abnormal deep thermal structure.The recharge mechanism,thermal reservoir characteristics,and genetic laws of geothermal water revealed in this study can provide solid theoretical support and data reference for the scientific exploration,rational development and utilization,and standardized management of geothermal resources in the Guanzhong Basin.关键词
地热田/水文地球化学/水岩作用/热储温度/补给来源/成因模式/关中盆地Key words
geothermal field/hydrogeochemistry/water-rock interaction/reservoir temperature/recharge source/genetic model/Guanzhong Basin分类
天文与地球科学引用本文复制引用
贾明行,田鸿玮,任战利,刘健,祁凯,段晨阳,兰华平,郭飒飒,刘彦钊,姚举文..关中盆地临潼华清池地热田水化学特征及成因机制[J].地质通报,2026,45(5):851-869,19.基金项目
国家自然科学基金专项项目《羌塘盆地构造热体制与烃源岩热演化时空差异》(批准号:42241204)和陕西省公益性地质调查项目《关中盆地南缘水热型地热资源赋存特征及可持续利用对策》(编号:202117) Supported by the joint funding of Special Project of the National Natural Science Foundation of China(No.42241204)and the Public Welfare Geological Survey Project of Shaanxi Province(No.202117) （批准号:42241204）
