摘要
简要介绍了水文地球化学模拟中饱和指数以及质量平衡模拟的概念,并以宁夏泾源县10个地下水样点为例,采用质量平衡模拟方法,运用PHREEQC地球化学模拟软件,计算了各水样点矿物的饱和指数及模拟路径上矿物(气体)的溶解(沉淀)量。结果表明:泾源县地下水水化学成分主要由钠长石、白云石、石膏和岩盐的溶解及方解石和钠蒙脱石的沉淀物组成。通过水文地球化学模拟,可以深入了解某一地区的水化学演化规律,对缓解水资源短缺矛盾,保护水资源与水环境等具有重要的意义。
This article briefly described the mineral saturation index and mass balance simulation of the hydro-geochemical mode,took 10 groundwater samples in Jingyuan County of Ningxia,applied the mass balance simulation as well as the PHREEQC geochemical simulating software to compute the mineral saturation index of the groundwater samples and the dissolved（sedimentation） volume of minerals（gas）.The result showed that the chemical composition changes of groundwater are mainly caused by the dissolution of sodium feldspar,dolomite,gypsum and rock salt and sedimentation of calcite and sodium montmorillonite.Through the hydro-geochemical modeling,we could know the rule of water chemical evolution of this area.The simulation was of great significance to ease the conflicts of the shortage of water resources,protection of water resources and water environment.
出处
《水资源与水工程学报》
2010年第1期58-61,共4页
Journal of Water Resources and Water Engineering
基金
国家自然科学基金项目(40772160)
