河北柏乡县地下热水的水化学特征及地热温标应用  

Hydrochemical Features and Geothermometer Application on Geothermal Water in Baixiang County

作　　者：上官拴通 齐晓飞 张国斌 Shangguan Shuantong;Qi Xiaofei(The Second Exploration Team,Hebei Bureau of Coal Geological Exploration,Xingtai,Hebei 054000)

机构地区：[1]河北省煤田地质局第二地质队,河北邢台054000

出　　处：《中国煤炭地质》2018年第3期35-40,共6页Coal Geology of China

基　　金：河北省重点研发计划项目“河北省干热岩地热资源赋存分布与开发潜力研究”(17274503D)

摘　　要：研究区位于邢台市北部,属高温地热显示区。为了解区内地热田的热储基本特征,通过采集区内11组水化学样品分析可知,研究区水化学类型较复杂,背斜轴部区地热水循环较慢、可视为"静水",背斜两翼区地热水循环较快。地下热水中Cl与Li的正相关性,显示地热流体可能来源于深部;与Sr相关性较差,表明研究区地下水的盐分可能主要来自于深部热液;与Si O2、温度的正相关性更进一步印证了研究区地热为深部热源。经阳离子地温计与二氧化硅地温计估算各热储温度为69~87℃。基于综合分析,背斜轴部异常区热水可更新性较慢,地下热水开发利用应合理规划,但深部可能存在干热岩资源。The study area is situated in the north part of Xingtai City,belongs to high temperature geothermal revealed area.To know basic features of geothermal field reservoir in the area,11 groups of hydrochemical sample have been collected and analyzed.The result has shown that the hydrochemical types in the area are rather complex.Geothermal water in anticline axial region has rather slow circulation,can be regarded as“still water”;while in both limbs of anticline has quicker circulation.Cl-and Li+in geothermal water are positively correlated,showing the geothermal fluid probably come from deep part;poorer correlation with Sr 2+showing groundwater salinity in the area probably come from deep part geothermal fluid;positive correlation with SiO 2 and temperature can further confirm the deep heat source.The cationic geothermometer and silica geothermometer estimated temperature of geothermal reservoirs are 69～87℃.On the basis of synthetic analysis,the geothermal water in anticline axial region has slower renewability,the exploitation and utilization of geothermal water should be planed rationally,but in deep part may have hot dry rock resources existed.

关 键 词：高温地热显示区 地球化学 温标 柏乡 

分 类 号：P314[天文地球—固体地球物理学]