The characteristics of hydrogeochemical zonation of groundwater in inland plain

2018 2nd International Workshop on Renewable Energy and Development

能源学;经济学

Xin-Yu, H.O.U.^1 ; Li-Ting, Xing^1 ; Yi, Yang^1 ; Wen-Jing, Zhang^1 ; Guang-Yao, C.H.I.^1

School of Resources and Environment, University of Jinan, Jinan

250022, China^1

关键词: Cation exchanges;    Chemical compositions;    Confined water;    Groundwater flow systems;    Hydrogeochemical;    Intermediate flow;    Isotopic analysis;    Shallow groundwater;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/153/6/062003/pdf
DOI  :  10.1088/1755-1315/153/6/062003

来源: IOP

【 摘 要 】

To find out the hydrochemical zoning of groundwaterin the inland plain, taking Jiyang plain as an example, based on mathematical statistics, ion ratio coefficient and isotopic analysis method, the characteristics of water chemical composition and its zoning at different depths of 500m were studied. The result shows: The groundwater flow system in the study area can be divided into local flow system, intermediate flow system and regional flow system. The hydrochemical type of shallow groundwater is complex. The hydrochemical types of middle confined water are mainly Cl⋅SO4 - Mg⋅Na and SO4⋅Cl - Na⋅Mg. The deep confined water is mainly HCO3. The TDS of shallow groundwater increases gradually along the direction of groundwater flow. The shallow saltwater and freshwater are alternately distributed in horizontal direction, and saltwater is distributed sporadically in the interfluve area with sporadic punctate or banded, and hydrochemical types are mainly Cl⋅SO4 - Na⋅Mg⋅Ca. Conclusion: Groundwater in the study area is affected by complicated hydrogeochemical action, mainly in the form of filtration, cation exchange and evaporation. The inland plain area is characterized by hydrogeochemical zonation in horizontal and vertical.