摘要
水化学分析结果表明,鞍山市倪家台地下热水属于HCO3.SO4-Na和SO4.HCO3-Na型水,且含有氟、锶和二氧化硅等多种矿物成分.由构建的硅-焓混合模型得出倪家台地区地下热水已有大量冷水混入,且混入比例介于67%—83%之间,水温下降的诱因是该区域过量开采地热水,在这种人为的长期干扰作用下,增大了上部含水层冷水对下部地热水的补给量,对今后可持续利用该区域地热资源构成了严重的威胁.
Hydrochemistry analysis results has indicated that the geothermal water in Nijia-Tai belongs to the types of HCO3 - SO,-Na and SO4 · HCO3-Na. It also contains a great deal of minerals such as fluoride, strontium and silicon dioxide. By the silicon-enthalpy mixing model, it was deduced that the geothermal water in Nijia-Tai has been mixed with the upper cold groundwater and the mix proportion is between 67% and 83%. The over-exploitation to the geothermal water results in its temperature drop. With the long-term disraption by human-beings, the recharging amount of upper cold aquifer to the lower geothermal water is increasing, which, if not changed, would seriously threat the sustainable utilization of geothermal resources in this area.
出处
《环境化学》
CAS
CSCD
北大核心
2010年第2期324-328,共5页
Environmental Chemistry
基金
辽宁省自然科学基金项目(20072012)
辽宁省冶金局科技项目(20071207)
关键词
地热田
水化学
混合模型
冷水混入
水温下降.
geothermal field, hydrochemistry, mixed mode, mixed with cold groundwater, geothermal- water temperature drop.
