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双辽市地下水水文地球化学演化规律研究

Research on the Evolution Law of Hydrochemical Chemistry of Groundwater in Shuangliao City

  • 摘要: 双辽市的供水水源主要是地下水,其水质的变化会对工业、农业和居民生活造成很大的影响。因此对双辽市地下水水化学特征和形成过程进行研究具有重要意义。本研究基于PHREEQC软件,在潜水和微承压水两条路径上开展了反向地球化学模拟,结合主要离子比值分析了双辽市地下水水化学的形成和演化规律。进一步,将地质和水文地质条件、水文地球化学过程以及地下水化学组分的特征结合起来,建立水文地球化学演化模型,给出了研究区地下水水化学演化的定性和定量特征,揭示了该区水文地球化学演化过程。研究结果表明:蒸发作用、溶滤作用和阳离子交换是双辽市潜水水化学形成中的主要控制因素;溶滤作用和阳离子交换是微承压水流动过程中的主要控制因素。

     

    Abstract: The water supply in Shuangliao City is mainly groundwater and the change of water quality will have a great impact on industry,agriculture and residents’ life.Therefore,it is of great significance to study the chemical characteristics and formation process of groundwater water in Shuangliao City. Based on PHREEQC software,this study carries out reverse geochemical simulation on the two paths of diving and micropressurized water,and analyzes the formation and evolution law of groundwater water chemistry in Shuangliao City in combination with the main ion ratio. Further,by combining geological and hydrogeological conditions,hydrogeochemical processes and the characteristics of groundwater chemical composition,a hydrogeochemical evolution model is established,qualitative and quantitative characteristics of hydrochemical evolution of groundwater in the study area are given,and the hydrogeochemical evolution process in the area is revealed. The results show that evaporation,solubility and cation exchange are the main control factors in the chemical formation of diving water in Shuangliao City,and soluble filtration and cation exchange are the main control factors in the process of micropressurized water flow.

     

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