Abstract
This paper takes the Ligezhuang Area in the downstream of the Dagu River as the typical study case, and the groundwater samples are analyzed scientifically and systemically, then the descriptive statistics, the piper diagram and the mass balance simulation are used to gain the better understanding of the hydrochemistry characteristics and evolution laws of groundwater. The results show that (1) With the increase of the mineralization degree in the research area, the groundwater chemical types change from Ca Na Mg-HCO3 SO4 Cl type to NaMg-Cl SO4 and Na-Cl type.(2) When the groundwater flows from low mineralization area to high mineralization area, it mainly occurs the precipitation of calcite and montmorillonite; the dissolution of dolomite, gypsum, halite, CO2, chalcedony, fluorite and illite; meanwhile the cation exchange effect. The results will provide a better understanding of the groundwater resources in the region and help the government develop suitable utilization strategies for the groundwater resources.
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