贵州苗匡热矿水地热区水化学特征及热储条件分析  

Hydrochemistry Characteristics and Thermal Reservoir Conditions of the Miaokuang Geothermal Area,Guizhou Province

作　　者：杨晓飞 范二川 YANG Xiaofei;FAN Erchuan(The 1st Brigade of Guizhou Nonferous Metal and Nucleus Intustry Geological Exploration Bureau,Qingzhen,Guizhou 551400;The 5th Brigade of Guizhou Nonferous Metal and Nucleus Industry Geological Exploration Bureau,Anshun,Guizhou 561000)

机构地区：[1]贵州省有色金属和核工业地质勘查局一总队,贵州清镇551400 [2]贵州省有色金属和核工业地质勘查局五总队,贵州安顺561000

出　　处：《地质与勘探》2020年第1期94-101,共8页Geology and Exploration

基　　金：国家自然科学基金(编号:41362006);国家科技支撑重要计划项目(编号:2011BAB04B04)联合资助

摘　　要：贵州苗匡热矿水地热区大地构造位于江南复合造山黔南坳陷铜仁复式褶皱变形带,区域构造为红石古断裂带与苗匡断裂交汇锐角区,区内出露的地层有前南华系板溪群、南华系、震旦系、寒武系;热矿水水化学类型为HCO 3-Na型,含高氟、锶、锂、偏硅酸;弱碱性水;呈带状中低温热储;区域大地热流供给热量;地下热矿水补给为构造破碎带深远程补给;区域性红石活动断裂带具有导热导水储水性,热矿水被温差、压力差等驱动循环运移至断裂破碎带富集,苗匡次级断裂带在该热储起到连通传导作用;热矿水井口温度45℃,出水量560 m 3/d。研究结果可对该区热矿水勘查开发及利用提供参考和借鉴。In tectonics,the MiaoKuang geothermal area lies in the Tongren complex fold deformation zone,South Guizhou depression,Jiangnan complex orogenic belt.In regional structure,it is situated in an intersection acute angle region of the Hongshi palaeo-fault zone and Miaokuang fault.Here exposed strata include pre-Nanhua System Banchi Group,Nanhua System,Sinian System,and Cambrian System.The hot mineral water is HCO 3-Na type,which contains fluorine,strontium,lithium,and metasilicate acid,as weakly alkaline water with medium-low temperature belt-like reservoirs.Regional heat flow supplies heat,and the Hongshi active fault zone serves as a channel with good thermal conductivity,water transmission,and water storage.The hot mineral water is driven by temperature difference and pressure difference to migrate circularly to the fracture zone for enrichment,the Miaokuang secondary fault zone plays a role in connection and conduction of heat reservoirs.The wellhead temperature is 45℃and the water output is 560 m 3/d.The study results can be used as a reference for geological survey and utilization of geothermal mineral water in this area.

关 键 词：热矿水 地热区 水化学特征 热储条件 苗匡 贵州 

分 类 号：P641.3[天文地球—地质矿产勘探]