The chemical characteristics and hydrogen and oxygen isotopic compositions of the Zhonghu mining area in Huaibei

Autor: Qiang Wu, Houzhu Wang, Liugen Zheng, Xing Chen, Chunlu Jiang
Rok vydání: 2020
Předmět:
Zdroj: Arabian Journal of Geosciences. 13
ISSN: 1866-7538
1866-7511
Popis: To study the hydrochemical characteristics, influencing factors, and sources of the subsidence water, river water, and groundwater in the Zhonghu mining area in Huaibei. Piper diagrams, Gibbs distribution analysis, and linear regression are combined with hydrogen and oxygen isotope data. The results show that the relative proportions of the main cationic components in the study area are Na+ > Ca2+ > Mg2+ > K+ and that the relative proportions of the main anion components are HCO3− > SO42− > Cl−. The concentrations of total dissolved solids (TDS) in the surface water exhibit the following seasonal pattern: dry season > flat-water period > high-water period. Additionally, the shallow groundwater TDS concentrations exhibit the following seasonal pattern: flat-water period > high-water period > dry season. The Piper diagram and Gibbs distribution analysis suggest that the shallow groundwater hydrochemical type in the study area is HCO3− − Na+ and that the surface water hydrochemical type is HCO3− − SO42− − Na+. The magnitude of the overall fluctuation in δD and δ18O values in the samples exhibits the order of subsidence water > river water > shallow groundwater. From the analysis of deuterium excess values, the main recharge source of the river water, subsidence water, and shallow groundwater is atmospheric precipitation that has been affected by evaporation. The intensity of the impact is higher for subsidence water than for river water and groundwater, and the subsidence water is recharged not only by atmospheric precipitation but also by groundwater.
Databáze: OpenAIRE
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