菏泽地区鄄城地热田地热水化学特征及成因研究OA

Juancheng geothermal field in the northern of Heze fault is rich in geothermal resources.It is of great significance to explore the formation mechanism of regional geothermal resources for the develop-ment and utilization of geothermal resources and economic development in the northern part of Heze fault.In this paper,the collected samples have been analyzed by hydrogeochemistry,gas and isotope tests.It is showed that hydrochemical types of geothermal water in Juancheng geothermal field are mainly SO4· HCO3·Cl-Ca·Na,SO4·HCO3-Ca·Na and SO4-Ca·Na.Juancheng geothermal field shows the e-volution path from the shallow circulation-open karst groundwater flow system(Ⅰ)in the recharge area,to the middle circulation-semi-open karst geothermal water flow system(Ⅱ)in the runoff area,and then to the deep circulation-weak open karst geothermal water flow system(Ⅲ)in the discharge reten-tion area.The heat source is mainly shell source,which is a typical medium-low temperature conduction geothermal system.