Abstract: Based on the geothermal resources and drilling results in Gaosha area, the causes of geo⁃ thermal resources in Gaosha geothermal field are summarized, and the developmental conditions of geother⁃ mal resources are analyzed to provide reference for actual development. The results show that the fault pro⁃ vides a good channel for the circulation and migration of deep geothermal fluid in the local thermal field, and provides conditions for the formation of thermal convection. The fracture zone and limestone fissure cave development zone in the area provide good hot water storage space. The deep hidden high-yield hot granite is large in scale in the region, providing a rich heat source. Therefore, the geothermal field is a frac⁃ tured karst cave type thermal reservoir controlled by fault zone. The hydrochemical type of the geothermal field is mainly HCO₃-Ca·Na type, followed by HCO₃-Na·Ca type. The direction of development and utiliza⁃ tion is physiotherapy bath, heating, agriculture, etc. The location conditions of the geothermal field are good, and the expansion of geothermal resources can meet the stable geothermal water demand in the high sand area of Longmen County.

Key words: geothermal resource, geothermal genesis, development and utilization