湖南安仁县万田地热田空间定位及地热产出特征分析

常德-安仁断裂带、茶陵-临武断裂带及其派生断层、五峰仙岩体和岩关阶下段地层（C₁y¹）与万田地热田相关，其地热地质背景具专属性，热源、热储、盖层所组成的地热系统时空有效配置是地热产出的必要条件.该地热田主要热储层为C₁y¹白云质灰岩、白云岩，兼有层状热储和带状热储双重特征，属最经济的适宜开采的具理疗热矿水标准的低温地热资源，开发前景好.

ANALYSIS ON THE SPATIAL LOCALIZATION AND OCCURRENCE OF WANTIAN GEOTHERMAL FIELD IN ANREN COUNTY,HUNAN PROVINCE

Present study on the geothermal system in Wantian geothermal field reveals the relationships between the geothermal characteristics and geological composition. The Wantian geothermal field is associated with particular geological conditions, such as Changde-Anren fault, Chaling-Linwu fault and their derived faults, Wufengxian granite body and the strata of Lower Carboniferous(C₁y¹), with specific geothermal geological background. The effective allocation in time-space of geothermal system consisting of heat source, reservoir and cap rock is a necessary condition for geothermal occurrence. The main geothermal reservoir of the geothermal field is the Lower Carboniferous dolomitic limestone or dolomite, including both of stratified reservoir and zoned reservoir. The Wantian geothermal field is a kind of economical low temperature geothermal resources with medical hot mineral water quality, suitable for mining and with developing prospects.