韩城矿区奥灰水化学特征及形成机制探讨

以岩石化学成分、水质分析、同位素组分以及水质动态长期监测等资料为基础，分析了矿区岩溶水介质的赋存与分布等水文地质背景，重点研究了水化学组分特征及其形成机制。结果表明：由矿区边部至中深部，水化学类型由重碳酸硫酸钙镁型向硫酸盐氯化钠钙型过渡，TDS随含水层埋深升高而水质变差，水化学组分主要由溶滤作用经去膏盐化和脱白云岩化过程形成，开采井群水质变劣的主因是矿区中深部高矿化水的混合作用所致。

Probe into Chemical Properties and Forming Mechanism of Karst Water in Ordovician Limestone of Hancheng Mining Area

Based on the informations of petrochemical composition, analyse of water quality, isotope component, and observation of water quality change for long time, and so forth, it's analysed preservation and distribution of Karst water medium in mining area, and so forth backgrounds of hydrogeology, and researched lay emphasis on properties of hydrochemical component and its forming mechanism. It's showing that: from fringe to the central and deep parts, hydrochemical types transition from type of bicarbonate and magnesium calcium sulfate to type of sulfate and calcium sodium chloride; TDS along with the depth of aquifer decrease, the water quality change to poor; hydrochemical component formed mainly through gypsum-removing and dolomite-removing process by lixiviation; and the main reason on water quality changed to poor in mining wells caused by migmatization of high-mineralized water in central and deep parts of mining area.