天津市华苑产业园区地热流体化学特征及质量评述  

Chemical Characteristics and Quality Evaluation of the Geothermal Fluids in the Huayuan Economical Area, Tianjin

作　　者：李嫄嫄[1] 唐永香[1] 李俊峰[1] 陈瑞军[1] 靳宝珍[1] 

机构地区：[1]天津地热勘查开发设计院,天津300250

出　　处：《地质调查与研究》2013年第3期226-232,共7页Geological Survey and Research

基　　金：天津市地热资源规划项目(2011-2015年)(国土房任[2011]4号)

摘　　要：华苑产业园区的热储层主要为新近系明化镇组、馆陶组和奥陶系,通过地球化学分析,推断其地热流体均属于大气降水成因,化学组分均表现出自东向西或自北东向南西、由山前到盆地中心的水平分带特征。本区各热储层地热流体及浅层第四系地下水在垂向上有较大变化,经分析,明化镇组有接受上覆第四系地下水的越流补给可能,而馆陶组热流体则在凸起区接受了下伏基岩热流体的顶托补给。经推断,地热流体补给源位于华苑产业园东侧或东北侧,补给缓慢。本区地热流体具有轻微-强腐蚀性,有硫酸钙结垢趋势,不宜直接作为饮用水源和渔业用水,也不适宜农业灌溉用水;但明化镇组适合大多数工业用水。可喜的是,各层热流体中偏硅酸和氟的含量都较高,经过一定的处理,可具医疗价值,如在此开发温泉旅游,将带来良好的经济效益。The reservoirs in the Huayuan Economical Area are mainly in the Minghuazhen, Guantao and Or-dovician Formations. Based on the geochemical analysis, we deduced the geothermal fluids here is original from precipitation. All the chemical compositions obey the horizontal strip characteristics from east to west, north-east to south-west and mountain front to basin center. The geothermal fluids of each reservoirs and groundwater of Quaternary System all change a lot in vertical. By analysis, it is possible for the Minghua-zhen reservoir to accept the leakage recharge from Quaternary groundwater. And the geothermal fluids in the Guantao reservoir may accept the top alimentation from bed-rock in hump area. In deduction, the recharge area is location in the east or north-east of the Huayuan Economical Area and the speed of recharge is very slow. In addition, the geothermal fluids here have light-strong corrosivity and scaling tendency of calcium sulfate, it is not suitable for drinking water and fish farm directly. And also, it is not suitable for agricultural irrigation. But fluids of the Minghuazhen Reservoir is suitable for most of industry. To be gratified, there is a great value on quantity of metasilicic acid and luorine in geothermal fluids of each reservoir. After dealing with it, there may be a good value in medical. If developing hot spring tourism here, there must be a great economic benefit.

关 键 词：地热流体 化学特征 水平分带 越流补给 华苑产业园区 天津 

分 类 号：P314.1[天文地球—固体地球物理学]