华南地质2024，Vol.40Issue(1)：133-142,10.DOI:10.3969/j.issn.2097-0013.2024.01.009
郴州市许家洞地区地热资源特征及资源量评价
Evaluation of Characteristics and Reserves of Geothermal Resources in the Xujiadong Area,Chenzhou City
摘要
Abstract
In order to find out the characteristics and reserves of geothermal water resources in Chenzhou City,two typical geothermal fields in the Xujiadong area were selected,and their geological conditions,char-acteristics of geothermal fluid field,and hydro-chemical types of geothermal water were also investigated by means of geothermal geological survey and water quality test.Based on the above research,an analysis and evaluation of geothermal resource reserves in this study area was conducted.The results show that:(1)The geothermal water is controlled by fault structure and is formed by the infiltrated groundwater absorbing heat energy from buried rock mass during deep circulation along fault structure.(2)The main hydro-chemical types are HCO3-Ca type,HCO3-Ca·Na type or HCO3·SO4-Ca·Mg type,and the geothermal water is low-tempera-ture,colorless and transparent weakly alkaline water.(3)The main supply source of geothermal water is atmo-spheric precipitation.After water infiltration,it migrated to a certain depth along the developed NE fault struc-ture(F24,F7,F25,F8),and during this process,it absorbed heat energy and gradually warms to form hot water.Afterwards it migrated upwards along the unevenly developed karst fissure system at faults intersection,and finally emerged on the surface as hot springs.(4)The geothermal water can provide about 3.23×108 MJ of thermal energy annually in this research area,which can save about 1.18×104 t of standard coal resources per year.The research results are important for guiding the rational development and utilization of geothermal re-sources in Chenzhou City.关键词
地下热水/流场特征/水化学特征/地热资源量计算/地热资源评价Key words
geothermal water/flow field characteristics/water chemical characteristics/calculation of geo-thermal resources/evaluation of geothermal resources分类
地质学引用本文复制引用
何阳,范毅,陈帅奇,杨贵花,李雪宇,周进,谭佳良,刘声凯,景营利,熊雄,刘一鸣..郴州市许家洞地区地热资源特征及资源量评价[J].华南地质,2024,40(1):133-142,10.基金项目
湖南省自然资源厅项目(20230174DZ （）
20200308) （）
