曹妃甸地区地下水水化学形成作用分析

Study on the Groundwater Hydrochemical Formation Process in Caofeidian Area,Hebei Province

在开展曹妃甸地区环境地质调查评价过程中,利用水化学组分及离子组合方法对曹妃甸地区水化学样品进行分析,结合曹妃甸地区水文地质条件,开展了地下水水化学形成作用研究,认为该区浅层地下水以溶滤地层中的岩盐、碳酸盐矿物和硅酸盐矿物为主,方解石、石膏等贫镁矿物的影响较小,同时,强烈的蒸发浓缩作用对浅层水水化学特征具有重要影响。深层水以溶滤地层中的硅铝酸盐、苏打土、岩盐等为主。此外,在水流路径上还发生了混合作用和阳离子交替吸附作用。河水以蒸发浓缩作用为主要水化学形成作用,同时还溶滤流经河床中的岩盐、硅铝酸盐和硫酸盐。

During the investigation process of the environmental and geological problems in Caofeidian area,the chemical components and compounding characters of samples in Caofeidian area are used to research the groundwater chemical formatting mechanism combined with the hydrogeology conditions.It is suggested that the dissolution-precipitation process of the halite,carbonate minerals,and silicate mineral in the aquifer is the main effect of the shallow groundwater,while the poor-Magnesium calcite and gypsum have little effect.Meanwhile,the intense evaporation-concentration has important influence on the hydrochemical features of the shallow groundwater.The dissolution-precipitation process of silica-alumina salt,sodic soil and halite effects the deep groundwater heavily.Besides,the mixinng action and the cation exchange happen along the flow path.The evaporation effects the river water besides dissolving the halite,silica-alumina salt and sulfate salt.