选取具有典型意义的膏盐层下石膏晶洞内滴水、池水以及大气降水、土壤水作为研究背景,分析其水化学成分特征及迁移过程得出:石膏晶洞水化学参数K+、Na+、Mg2+、Ca2+、Cl-、SO2-4、HCO-3、TDS的含量分别介于0.45~7.22、0.4~3.92、20.27~310.45、70~338、0.38~3.37、81.31~958.12、73.2~207.4、562~1 780 mg/L之间,各离子质量浓度均值进一步表明区域内SO2-4、TDS质量浓度很高;而K+、Na+、Cl-质量浓度很低;时间序列上,研究区地下水化学类型主要分为5种类型:Ca-HCO3型水、Ca-SO4型水、Ca-Mg-SO4型水、Ca-Mg-HCO3型水、Ca-Mg-SO4-HCO3型水,其中以Ca-SO4型水为主.同时由总硬度、TDS、水温、pH得出,研究区属弱碱性低矿化度(微)硬水;由降水至洞穴池水水化学类型为:Ca-HCO3型水至Ca-Mg-SO4型水.各离子含量变化主要受地层岩性的控制.其次可能受溶滤作用、蒸发浓缩作用、盐效应、阳离子交替吸附作用以及氧化还原作用影响.%The typical meaning drip,pool water,atmospheric precipitation and soil water of the gypsum geode under gypsolyte as a research background were choosed.Analysis the hydrochemical feature and forming process of the gypsolyte and draw a conclusion: The content of the main hydrochemical parameter of the gypsolyte within this range,K+ between 0.45~7.22 mg/L,Na+ between 0.4~3.92 mg/L,Mg2+ between 20.27~310.45 mg/L,Ca2+ between 70~338 mg/L,Cl-between 0.38~3.37 mg/L,SO2-4 between 81.31~958.12 mg/L,HCO-3 between 73.2~207.4 mg/L,TDS between 562~1 780 mg/L.The average ion mass concentration shoes that the concentration of the SO2-4、TDS is high and the concentration of the K+、Na+、Cl-is low.On the time series,the hydrochemical type of the researchful area is divided into five categories: heavy calcium carbonate~water,calcium sulfate~water,magnesium sulfate~calcium type water,heavy calcium carbonate~magnesium type water and heavy magnesium carbonate calcium sulfate~water.Among these,the calcium sulfate~water as main type for researching.Meanwhile with the total hardness,TDS,water temperature and pH can be draw a conclusion that the chemical property of the water is weakly alkaline low salinity (micro) hard water.The water's chemical property from rainfall to cave water is heavy calcium carbonate-water to magnesium sulfate-calcium type water.
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