【摘要】 为了研究彬长矿区主要充水水源水化学特征，系统采集雨水、泾河水、洛河组和延安组地下水样并进行水质检测，将洛河组地下水和延安组地下水按不同体积比混合后进行水质检测，进行洛河组岩样溶解于纯水、侏罗系岩样溶解于纯水和洛河组水等溶解试验。研究表明：按照雨水、泾河水、洛河组水、延安组水的顺序，随着含水层埋深增加，各水样Na⁺、SO₄^2-、Cl^-离子含量显著增大，矿化度和总硬度逐渐增大，反映其径流条件趋于滞缓；洛河组水和延安组水混合后，随着延安组水体积占比逐渐增大，混合水样SO₄^2-、Cl^-、Na⁺离子含量也随之增大，矿化度和总硬度显著增大；水岩溶解作用主要发生了硅酸盐和石膏矿物等溶解于水的化学反应。洛河组岩样溶解于纯水时，其硅酸盐和石膏溶解于水的量较大；侏罗系岩样溶解于纯水或洛河组水时，其硅酸盐和石膏溶解于水的量相对有限。更多还原

【Abstract】 In order to study the hydrochemical characteristics of rain、river and groundwater in the Binchang mining area, the rain, the Jinghe river, the groundwater samples of the Luohe Formation and the Yan’an Formation were collected and tested; the groundwater of the Luohe and the Yan’an were mixed in different volume ratios and then tested; the dissolution experiments of Luohe Formation rock samples in pure water, Jurassic rock samples in pure water and in groundwater of Luohe were carried out.The research shows that: according to the order of rain, Jinghe river, groundwater of Luohe, and groundwater Yan′an, with the depth of the aquifer increase, the Na⁺,SO₄^2-,Cl^- content of each water sample increased significantly, and the salinity and total hardness gradually increased, reflecting that the runoff conditions tend to be stagnant.When groundwater of Luohe and Yan′an are mixed, with the groundwater of Yan′an increased, the SO₄^2-,Cl^-,Na⁺ content of the mixed water increases, and the salinity and total hardness are significantly increased.When rock samples are dissolved in water, the silicates and gypsum are dissolved in water.When the Luohe Formation rock samples are dissolved in pure water, the amount of silicate and gypsum dissolved in water is relatively large; when the Jurassic rock samples are dissolved in pure water or Luohe Formation water, the amount of silicate and gypsum is relatively limited.更多还原