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Calculating groundwater mixing ratios in groundwater-inrushing aquifers based on environmental stable isotopes (D, 18 O) and hydrogeochemistry

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  • Luwang Chen
  • Xiaoxi Yin
  • Wenpin Xie
  • Xiaoqing Feng

Abstract

Conventional hydrogeochemical data and environmental stable isotopes are used to identify the recharge sources and the water–rock interactions in the groundwater-flowing direction within the multilayer groundwater system of the Sulin coal-mining district in the north Anhui province in China. δD and δ 18 O of groundwater in the mining district decrease along the groundwater-flowing direction in the recharge areas, yet in the runoff or discharge areas, they rise and fall along average δ values (δ 18 O = −8.68 ‰, δD = −67.4 ‰), which are lower than average δ values of local atmospheric precipitation (δ 18 O = −7.80 ‰, δD = −52.4 ‰). Principal component analysis is used to analyze the conventional hydrogeochemical data (K + + Na + , Mg 2+ , Ca 2+ , Cl − , SO 4 2− , HCO 3 − , CO 3 2− ) in the groundwater. The first and second principal components have large variance contributions, and represent “pyrite oxidation or groundwater hardening” and “desulfurization or cation exchange and adsorption,” respectively. From conventional hydrogeochemical data and environmental stable isotopes, it is demonstrated that groundwater of the Sulin coal-mining district is characterized by a mixing type, which is confirmed by three recharge end-members: fresh groundwater, leaching groundwater, and retained groundwater. By means of a sample dot-encompassed triangle in the scatter diagram of load scores for Component 1–Component 2, whose vertexes stand for the three end-members, a model for calculating groundwater mixing ratio is established and applied successfully to the evaluation and management of groundwater hazards in the coal-mining districts. Copyright Springer Science+Business Media Dordrecht 2014

Suggested Citation

  • Luwang Chen & Xiaoxi Yin & Wenpin Xie & Xiaoqing Feng, 2014. "Calculating groundwater mixing ratios in groundwater-inrushing aquifers based on environmental stable isotopes (D, 18 O) and hydrogeochemistry," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 71(1), pages 937-953, March.
    • Handle: RePEc:spr:nathaz:v:71:y:2014:i:1:p:937-953
    DOI: 10.1007/s11069-013-0941-2
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    References listed on IDEAS

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    1. Dan Yin & Longcang Shu & Xunhong Chen & Zhenlong Wang & Mokhatar Mohammed, 2011. "Assessment of Sustainable Yield of Karst Water in Huaibei, China," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 25(1), pages 287-300, January.
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    Cited by:

    1. Hongyu Gu & Huayong Ni & Fengshan Ma & Gang Liu & Xin Hui & Jiayuan Cao, 2020. "Using mixing model to interpret the water sources and ratios in an under-sea mine," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 104(2), pages 1705-1722, November.

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