某区域浅层地下水水文演变模拟分析

Simulation analysis of the hydrological evolution of shallow groundwater in a region

在水文地质实体内,生物生长和人群健康与浅层地下水的水文水质密切相关,因此对研究区域浅层地下水水化学迁移特征的模拟分析具有重要意义。本文利用PHREEQE软件对研究区域周边浅层地下水的水化学迁移演变特征进行模拟,分析典型监测点浅层地下水中主要阳离子及阴离子在特征条件下的水文水化学特征演化。研究结果表明:(1)本研究范围内,浅层地下水中的离子在迁移过程中受到了阳离子交换作用及水-岩交换作用的明显影响;(2)随着浅层地下水迁移,Fe离子的存在形式出现了提升,Ca离子的存在形式则出现了明显的下降。研究结果对理解研究区域浅层地下水的水化学特征具有一定的参考价值,为研究区域浅层地下水的保护工程提供重要的理论指导。

Within hydro-geological entities,biological growth and population health are closely related to the hydro-logical quality of shallow groundwater,making it important to simulate and analyse the chemical transport characteristics of shallow groundwater in the study area.This paper uses PHREEQE software to simulate the hydro-chemical transport evolution of shallow groundwater around the study area and to analyse the hydro-chemical evolution of the main cations and anions in shallow groundwater at typical monitoring sites under characteristic conditions.The results of the study show that:(1)ions in shallow groundwater are significantly affected by cation exchange and water-rock exchange during migration within the scope of this study;(2)As shallow groundwater migrates,there is an elevation in the form of Fe ions present and a significant decrease in the form of Ca ions present.The results of the study have a certain reference value for understanding the hydro-chemical characteristics of shallow groundwater in the study area,and provide important theoretical guidance for the conservation works of shallow groundwater in the study area.