宿县-临涣矿区深部含水层水循环稀土元素示踪

发布时间：2018-07-06 06:50

本文选题：稀土元素 + 深部地下水　；参考：《中国稀土学报》2017年05期

【摘要】：为了凸显稀土元素在示踪深部地下水系统水循环中的应用基础意义,以宿县-临涣矿区深部开采主要突水含水层四含、煤系、太灰与奥灰为研究示范,选取深部主要突水含水层地下水样品稀土元素地球化学参数(LREE/HREE,(La/Yb)_N,δEu,δCe,(La/Sm)_N,(Gd/Yb)_N,Eu/Sm)与常规离子(K~++Na~+,Ca~(2+),Mg~(2+),SO_4~(2-),Cl~-,HCO_3~-,CO_3~(2-))作为分析变量,开展主成分分析的对比研究,阐明了深部地下水稀土元素地球化学参数的控制因子与稀土元素分异的水文地球化学机制。从而基于矿区地质与水文地质条件概化,在矿区主要突水含水层地下水稀土元素分布与分异研究的基础上,提出了补给水源分别从近水平、近垂直与混合三种渗流路径补充相应主要突水含水层的深部地下水循环模式。研究成果为矿区深部水害防治和深部水资源保护与利用提供理论依据。
[Abstract]:In order to highlight the basic significance of the application of rare earth elements in the water cycle of deep groundwater tracer system, taking the deep mining of Suxian-Linhuan mining area as a demonstration of the four main water-inrush aquifers, coal measures, Tai-ash and Ordovician ash. The geochemical parameters of rare earth elements (LREE / HREE, (Lap / Yb) S, 未 EU, 未 ce, (La / S m), (Gd / Yb) N, (Gd / Yb) Nu Eu-Sm) and conventional ions (K ~ Na ~ + Ca ~ (2) mg ~ (2) so _ 4 ~ (2) O _ 4 ~ (2-) are selected as analytical variables to carry out a comparative study of principal component analysis. The controlling factors of REE geochemical parameters in deep groundwater and the hydrogeochemical mechanism of REE differentiation are expounded. Therefore, based on the generalization of geological and hydrogeological conditions in mining areas, and on the basis of the study on the distribution and differentiation of rare earth elements in groundwater in main water-inrush aquifers in mining areas, the recharge water sources are put forward from the near level, respectively. The near vertical and mixed percolation paths supplement the deep groundwater circulation model of the corresponding main water-inrush aquifers. The research results provide theoretical basis for the prevention and control of deep water hazards and the protection and utilization of deep water resources.
【作者单位】：合肥工业大学资源与环境工程学院;
【基金】：国家自然科学基金面上项目(41372244)资助
【分类号】：P641.3;P641.463

【相似文献】