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Imaging acidic contaminants in a confined aquifer using electromagnetic geophysical method constrained by hydrochemical data

文献类型：期刊论文

作者Cheng, Yuanzhi1,2; Hu, Xiangyun3; Kong, Yanlong1,2; Dong, Yanhui1,2; Guo, Junfeng4; Wang, Liheng1,2; Wang, Jiyang1,2
刊名JOURNAL OF HYDROLOGY
出版日期2022-06-01
卷号609页码:14
ISSN号0022-1694
关键词Uranium mining In-situ leaching Groundwater contaminant CSAMT Electrical resistivity structure
DOI10.1016/j.jhydrol.2022.127704
英文摘要Acid in-situ uranium leach mining is an effective, popular technology for extracting uranium without large uranium mill tailings. However, acid in-situ leaching causes extremely high concentrations of acidic contaminants in aquifers. To represent the migration and range of acidic contaminant pollutants in confined aquifers, this study applied the controlled source audio-frequency magnetotellurics (CSAMT) method to a uranium mining area located in the Yili Basin, Xinjiang, northwest China. We collected ten CSAMT profiles from 364 sites with an average site interval of 20 m. The electrical resistivity model of the uranium mining area was obtained via twodimensional inversion using CSAMT data, with 23 frequencies, ranging from 8192 Hz to 4 Hz. Combined with geological, geochemical, and well log data, this resistivity model was successfully used to identify the scale and position of acid contaminant plumes beneath the uranium mining area, which appear as electrically well-defined features that closely coincide with the distribution of sulfate and uranium ions in groundwater. With uranium mining activities ceasing, the scale of acid contaminant plumes has been reduced, owing to the natural attenuation of the aquifer or the contaminants well confined in the mining site. The low-permeability sandstone surrounding the aquifer was imaged as a resistive feature, which confines the contaminant plumes to the uranium mining area and slows the downstream migration of contaminants. According to the modified Archie's law, the porosity of the sandstone bearing uranium beneath the injection well zone increases, owing to acidification, while the porosity of the sandstone beneath the production well zone decreases, owing to pore plugging.
WOS关键词YILI BASIN ; ELECTRICAL-CONDUCTIVITY ; GROUNDWATER EXPLORATION ; NATURAL ATTENUATION ; URANIUM ; RESISTIVITY ; CSAMT ; SURFACE ; MAGNETOTELLURICS ; RESTORATION
资助项目National Natural Science Foundation of China[42004060] ; National Natural Science Foundation of China[41630317] ; National Key Research and Development Project of China[2019YFC0604901] ; Chinese Academy of Sciences[2020-DX03-B-007]
WOS研究方向Engineering ; Geology ; Water Resources
语种英语
出版者ELSEVIER
WOS记录号WOS:000790506200005
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/105171]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Hu, Xiangyun
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
3.China Univ Geosci, Inst Geophys & Geomat, Key Lab Subsurface Multiscale Imaging, Wuhan 430074, Peoples R China
4.Wuhan Shenyanie Technol Co Ltd, Wuhan 430073, Peoples R China
推荐引用方式
GB/T 7714		 Cheng, Yuanzhi,Hu, Xiangyun,Kong, Yanlong,et al. Imaging acidic contaminants in a confined aquifer using electromagnetic geophysical method constrained by hydrochemical data[J]. JOURNAL OF HYDROLOGY,2022,609:14.
APA Cheng, Yuanzhi.,Hu, Xiangyun.,Kong, Yanlong.,Dong, Yanhui.,Guo, Junfeng.,...&Wang, Jiyang.(2022).Imaging acidic contaminants in a confined aquifer using electromagnetic geophysical method constrained by hydrochemical data.JOURNAL OF HYDROLOGY,609,14.
MLA Cheng, Yuanzhi,et al."Imaging acidic contaminants in a confined aquifer using electromagnetic geophysical method constrained by hydrochemical data".JOURNAL OF HYDROLOGY 609(2022):14.

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来源：地质与地球物理研究所

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