Identified the hydrochemical and the sulfur cycle process in subsidence area of Pingyu mining area using multi-isotopes combined with hydrochemistry methods  

作　　者：Hui-Meng Su Fa-Wang Zhang Jing-Yu Hu Jin-Feng Lei Wei Zuo Bo Yang Yu-Hua Liu 

机构地区：[1]School of Environmental Studies,China University of Geosciences,Wuhan 430074,China [2]Center for Hydrogeology and Environmental Geology,China Geological Survey,Baoding 071051,Hebei Province,China [3]Henan Branch,China South-to-North Water Diversion Middle Route Corporation Limited,Zhengzhou 450046,China [4]The Fifth Geological Survey Institute,Henan Provincial Bureau of Geology and Mineral Resources,Zhengzhou 450012,China [5]Natural Resources Science and Technology Innovation Center of Henan Province(Research on Eco-Environmental Assessment and Restoration Technology),Zhengzhou 450012,China

出　　处：《Journal of Groundwater Science and Engineering》2024年第1期62-77,共16页地下水科学与工程（英文版）

基　　金：supported by Geological Research Project of the Construction Management Bureau of the Middle Route of the South to North Water Diversion Project(ZXJ/HN/YW/GC-2020037)。

摘　　要：Groundwater serves as an important water source for residents in and around mining areas.To achieve scientific planning and efficient utilization of water resources in mining areas,it is essential to figure out the chemical formation process and the ground water sulfur cycle that transpire after the coal mining activities.Based on studies of hydrochemistry and D,^(18)O-H_(2)O,^(34)S-SO_(4)isotopes,this study applied principal component analysis,ion ratio and other methods in its attempts to reveal the hydrogeochemical action and sulfur cycle in the subsidence area of Pingyu mining area.The study discovered that,in the studied area,precipitation provides the major supply of groundwater and the main water chemistry effects are dominated by oxidation dissolution of sulfide minerals as well as the dissolution of carbonate and silicate rocks.The sulfate in groundwater primarily originates from oxidation and dissolution of sulfide minerals in coal-bearing strata and human activities.The mixed sulfate formed by the oxidation of sulfide minerals and by human activities continuously recharges the groundwater,promoting the dissolution of carbonate rock and silicate rock in the process.

关 键 词：PCA Ion ratio Water chemistry Sulfide minerals Multi-isotopes Subsidence area of mining area 

分 类 号：P641[天文地球—地质矿产勘探]