Occurrence characteristics of geothermal water in Meixian of western Central Shaanxi Basin
The rational development and utilization of geothermal resources is of great significance in promoting the transfor-mation of energy structure,advancing the development of green and clean energy and realizing the goal of"double carbon"in the new era.There are abundant geothermal resources in the underground of Meixian urban area with great exploitation potential,but the geothermal geological research degree is low.This paper analyzes and summarizes the occurrence charac-teristics of geothermal water in Meixian urban area from the characteristics of geological structure,strata and thermal reser-voir,geothermal field,flow field and hydrochemistry.The results show that:The thermal reservoir in Meixian urban area is characterized by"dual heat accumulation",which takes into account both conduction and convection.Geothermal water be-longs to the composite geothermal system of medium and low temperature porosity and fracture.The ground heat flow is the"source"of geothermal water formation,and the regional deep and large faults and secondary faults are channels for under-ground hot water recharge and upwelling,while receiving surface water recharge.The thermal reservoir consists of porous sandstone thermal reservoir in Bahe Formation,and fractured bedrock thermal reservoir and bedrock fractured-zone thermal reservoir in Kuanping Group.There exists seepage and convection between the thermal reservoirs,and there is a certain hy-draulic connection.The thicker Quaternary system in the area is a good cap layer.
Central Shaanxi BasinMeixian urban districtthermal reservoirgeothermal geologygeothermal fieldoccurrence characteristics
万方数据
维普
