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针对松原市地下水环境及水资源开发利用现状,以松原市第四系潜水、第四系承压水和新近系承压水共294个采样点为研究对象,综合运用SPSS软件描述性统计、Aquachem软件Schoeller图解法、Piper三角图示法、离子比例系数分析法及Gibbs图解法,全面系统地分析了水化学参数特征及其成因变化规律。结果表明:研究区地下水以中性淡水为主,阳离子以Na~+和Ca~(2+)为主,阴离子几乎均以HCO3-为主,潜水水化学类型以HCO_3~-Ca、HCO_3~-Na·Ca型为主,第四系承压水以HCO_3~-Na、HCO_3~-Na·Ca型为主,新近系承压水以HCO_3~-Na型为主;地下水由潜水向承压水流动过程中,离子主要来源由碳酸盐矿物质类风化溶解逐步变为以阳离子交替吸附作用及硅酸盐矿物溶解为主;该区潜水受岩石风化作用和蒸发浓缩作用影响较为明显,承压水以水岩作用过程中的矿物溶解及阳离子交替吸附作用为主。
According to the status quo of groundwater environment and water resources development and utilization in Songyuan City, 294 sampling points of Quaternary phlogistic, Quaternary pressure water and Neogene confined water in Songyuan city were selected as the research object. Using SPSS software descriptive statistics, Aquachem Software Schoeller graph method, Piper triangle graph method, ion ratio coefficient analysis method and Gibbs graph method, and comprehensively and systematically analyzed the characteristics of hydrochemistry parameters and their gene variation rules. The results show that the groundwater in the study area is dominated by neutral fresh water. The cations are mainly Na ~ + and Ca ~ (2+), and the anions are almost all composed of HCO3 -. The chemical types of the submersible water are HCO_3 ~ -Ca and HCO_3 ~ Na · Ca, and HCO_3 ~ -Na and HCO_3 ~ -Na · Ca types in the Quaternary, and HCO_3 ~ -Na in the Neogene. The groundwater from the subducted to the confined water In the flow process, the main source of ions gradually changed from the weathering dissolution of carbonate minerals to the cation-selective adsorption and the dissolution of silicate minerals. The diving in this area was more affected by rock weathering and evaporation. Water is dominated by mineral dissolution and cation-selective adsorption of water and rock.