Hot springs are a precious resource for physical therapy and tourism,and their hydrochemical characteristics are of great significance for the evaluation and genesis research of thermal mineral water in physical therapy.The area where Cuonake hot spring islocated in Batang county,Sichuan province,has abundant tourism resources,and there are currently no detailed hydrochemical data reports on this hot spring.In order to help the development and utilization of Cuonake hot springs and the study of their genesis,this article collected representative hot spring water from Cuonake hot springs,conducted water quality measurement and trace element analysis,studied hydrochemical characteristics,conducted preliminary evaluation of physical therapy hot mineral water,and explored the genesis of the hot springs.The research results show that the temperature at the mouth of Cuonake hot spring is 50～65℃,and its hydrochemical type belongs to the HCO3-·Na type.The hot spring water has a high content of lithium,strontium,rubidium,cesium,tungsten,boron,fluorine,metasilicic and metaboric acid components.Among them,the fluorine,metasilicic acid,and metaboric acid content meet the concentration standards of medical value or named mineral water,making it a good physical therapy hot mineral water.The main utilization direction of hot springs is comprehensive utilization of physical therapy,health care,and heating.The thermal storage temperature of Cuonake hot spring ranges from 107.56 to 119.01℃(with an average of 114.30℃),and it belongs to a medium temperature geothermal resource of non magmatic heat source type.The atmospheric precipitation and melting water of ice and snow in the surrounding mountainous areas circulate along the nearly north-south trending fault zone and the northeast trending fault fracture zone to a higher temperature depth of about 3 300 m.They are heated by passing rocks and undergo strong water rock reactions with lithium rich granite,forming geothermal water rich in Li,Rb,Cs,B,Cl and other elements.Geothermal water rises along the fracture zone to form hot springs.
hydrochemical characteristicsphysical therapy hot mineral watergenesisCuonake hot springBatang area in western Sichuan
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