The Anxi County is situated in the middle Fujian fault block oblique uplift area, south central part of the eastern Fujian vol?canic fault depression zone. The area has abundant geothermal resources, 9 geothermal anomalous areas have been found at present. Geothermal water temperature is 38℃~75℃, wellhead artisan flow can be 38L/s as high, soluble SiO2 and F contents run up to medical hot mineral water quality standard with good physiotherapy bath efficacy. Through data acquisition, hydrogeological investigation and sample testing have learned that the Anxi geothermal water reservoir is granite;overburden is Quaternary and Jurassic volcanic rocks. Geothermal channel is mainly NW tenso-shear faults, and then joint fissures result from the faults. Geothermal reservoirs are mainly controlled by NE and NW faulted structures, zonal distributed, in the composite ruptured zone can form volcanic-convective hybrid geothermal water system.%安溪县地处闽中断块斜隆起区,闽东火山断拗带中南部,地热资源较丰富,目前已调查发现地热异常区有9处.地下热水温度在为38℃~75℃,井口自流量高达38 L/s,可溶性SiO2和F-含量达到医疗热矿水水质标准,具有良好的理疗洗浴功效.通过收集资料、水文地质调查及取样化验分析得知:安溪县地热水的热储层为花岗岩,盖层为第四系及侏罗系火山岩;热贮通道以北西向张剪性断裂为主,其次为由该组断裂引起的节理裂隙;热储主要受北东向和北西向断裂构造控制,呈带状分布,在断裂带复合处出露形成火山热-对流热混合型热水系统.
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