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
上官拴通,齐晓飞,张国斌
摘要(Abstract):
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。
关键词(KeyWords): 高温地热显示区;地球化学;温标;柏乡
基金项目(Foundation): 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)
作者(Author): 上官拴通,齐晓飞,张国斌
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