Evaluation of Characteristics and Reserves of Geothermal Resources in the Xujiadong Area,Chenzhou City
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.
geothermal waterflow field characteristicswater chemical characteristicscalculation of geo-thermal resourcesevaluation of geothermal resources
万方数据
维普
