韩城地区中深层岩溶地热资源热储特征及潜力评价

Thermal reservoir characteristics and potential evaluation of karst geothermal resources in Hancheng area

韩城地区地热资源丰富,具有得天独厚的地热地质优势,特别是在中深层岩溶地热水方面,呈面状分布,属中低温热矿水,具备"水量大、水位浅、水温高、易回灌"等优势。为合理开发利用地热资源,通过介绍韩城地区地热资源分布状况及开发利用现状,总结了地热地质条件,分析韩城地区岩溶地热水热储特征,估算了岩溶地热资源储量,对该区地热资源开发利用发展趋势作了预测。分析认为,后期开发利用阶段应加强物探勘查和地质评价工作,且地热水水温受奥陶系灰岩热储层埋藏深度控制,地热井水矿化度符合医疗用热矿水资源的要求。通过对研究区域中深层岩溶地热资源进行评价分析,可以为该区综合利用开发研究区地热资源提供地质依据。

Hancheng area is rich in geothermal resources and has unique geological advantages,especially in the middle and deep karst geothermal water,which has the advantages of“large water volume,shallow water level,high water temperature and easy recharge”.In order to rationally develop and utilize geothermal resources,the distribution and development status of geothermal resources in Hancheng area are introduced,the geothermal geological conditions are summarized,the characteristics of hot water and heat storage in karst areas of Hancheng area are analyzed,the reserves of karst geothermal resources are estimated,and the development trend of geothermal resources development and utilization in this area are predicted.The analysis shows that the geothermal water temperature is controlled by the buried depth of Ordovician limestone thermal reservoir,and the mineralization degree of geothermal well water meets the medical requirements,and the geophysical exploration and geological evaluation should be strengthened in the later stage of development and utilization.The evaluation and analysis of karst geothermal resources in the study area can provide geological basis for the comprehensive utilization and development of geothermal resources in the study area.