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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。
In order to highlight the basic meaning of application of rare earth elements in tracing the water circulation of deep groundwater system, taking the deep intrusion of the four main water-bearing formations, coal series, soils and soils in Shuxian-Linqu mining area as example, The REE geochemical parameters (LREE / HREE, (La / Yb) _N, δEu, δCe, (La / Sm) _N, (Gd / Yb) _N, Eu / Sm) (2 +), Mg 2+, SO 4 2-, Cl ~ -, HCO 3 ~ - and CO 3 2- as analytic variables. The principal component analysis , And illustrates the hydrogeochemistry mechanism of controlling factors of REE geochemical parameters and REE differentiation in deep groundwater. Based on the generalization of geological and hydrogeological conditions in the mining area, the distribution and differentiation of rare earth elements in the groundwater of the main inrush aquifer in the mining area are proposed. The supply water sources are replenished from the near-horizontal, near-vertical and mixed three kinds of seepage paths respectively Deep groundwater circulation model of water inrush aquifer. The research results provide a theoretical basis for the prevention and control of deep water damage in mining areas and the protection and utilization of deep water resources.