skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Using stable isotopes (δD, δ{sup 18}O, δ{sup 34}S and {sup 87}Sr/{sup 86}Sr) to identify sources of water in abandoned mines in the Fengfeng coal mining district, northern China

Abstract

With depleted coal resources or deteriorating mining geological conditions, some coal mines have been abandoned in the Fengfeng mining district, China. Water that accumulates in an abandoned underground mine (goaf water) may be a hazard to neighboring mines and impact the groundwater environment. Groundwater samples at three abandoned mines (Yi, Er and Quantou mines) in the Fengfeng mining district and the underlying Ordovician limestone aquifer were collected to characterize their chemical and isotopic compositions and identify the sources of the mine water. The water was HCO{sub 3}·SO{sub 4}-Ca·Mg type in Er mine and the auxiliary shaft of Yi mine, and HCO{sub 3}·SO{sub 4}-Na type in the main shaft of Quantou mine. The isotopic compositions (δD and δ{sup 18}O) of water in the three abandoned mines were close to that of Ordovician limestone groundwater. Faults in the abandoned mines were developmental, possibly facilitating inflows of groundwater from the underlying Ordovician limestone aquifers into the coal mines. Although the Sr{sup 2+} concentrations differed considerably, the ratios of Sr{sup 2+}/Ca{sup 2+} and {sup 87}Sr/{sup 86}Sr and the {sup 34}S content of SO{sub 4}{sup 2−} were similar for all three mine waters and Ordovician limestone groundwater, indicating that a close hydraulic connection may exist.more » Geochemical and isotopic indicators suggest that (1) the mine waters may originate mainly from the Ordovician limestone groundwater inflows, and (2) the upward hydraulic gradient in the limestone aquifer may prevent its contamination by the overlying abandoned mine water. The results of this study could be useful for water resources management in this area and other similar mining areas.« less

Authors:
; ; ; ; ; ;  [1]
  1. China University of Geosciences, State Key Laboratory of Biogeology and Environmental Geology & MOE Key Laboratory of Groundwater Circulation and Evolution (China)
Publication Date:
OSTI Identifier:
22780857
Resource Type:
Journal Article
Journal Name:
Hydrogeology Journal
Additional Journal Information:
Journal Volume: 26; Journal Issue: 5; Other Information: Copyright (c) 2018 Springer-Verlag GmbH Germany, part of Springer Nature; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1431-2174
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; AQUIFERS; CALCIUM IONS; CHINA; COAL MINES; CONTAMINATION; GROUND WATER; HYDRAULICS; ISOTOPE RATIO; LIMESTONE; OXYGEN 18; RESOURCE MANAGEMENT; STRONTIUM 86; STRONTIUM 87; STRONTIUM IONS; SULFUR 34; UNDERGROUND MINING; WATER RESOURCES

Citation Formats

Qu, Shen, Wang, Guangcai, Shi, Zheming, Xu, Qingyu, Guo, Yuying, Ma, Luan, and Sheng, Yizhi. Using stable isotopes (δD, δ{sup 18}O, δ{sup 34}S and {sup 87}Sr/{sup 86}Sr) to identify sources of water in abandoned mines in the Fengfeng coal mining district, northern China. United States: N. p., 2018. Web. doi:10.1007/S10040-018-1803-5.
Qu, Shen, Wang, Guangcai, Shi, Zheming, Xu, Qingyu, Guo, Yuying, Ma, Luan, & Sheng, Yizhi. Using stable isotopes (δD, δ{sup 18}O, δ{sup 34}S and {sup 87}Sr/{sup 86}Sr) to identify sources of water in abandoned mines in the Fengfeng coal mining district, northern China. United States. doi:10.1007/S10040-018-1803-5.
Qu, Shen, Wang, Guangcai, Shi, Zheming, Xu, Qingyu, Guo, Yuying, Ma, Luan, and Sheng, Yizhi. Wed . "Using stable isotopes (δD, δ{sup 18}O, δ{sup 34}S and {sup 87}Sr/{sup 86}Sr) to identify sources of water in abandoned mines in the Fengfeng coal mining district, northern China". United States. doi:10.1007/S10040-018-1803-5.
@article{osti_22780857,
title = {Using stable isotopes (δD, δ{sup 18}O, δ{sup 34}S and {sup 87}Sr/{sup 86}Sr) to identify sources of water in abandoned mines in the Fengfeng coal mining district, northern China},
author = {Qu, Shen and Wang, Guangcai and Shi, Zheming and Xu, Qingyu and Guo, Yuying and Ma, Luan and Sheng, Yizhi},
abstractNote = {With depleted coal resources or deteriorating mining geological conditions, some coal mines have been abandoned in the Fengfeng mining district, China. Water that accumulates in an abandoned underground mine (goaf water) may be a hazard to neighboring mines and impact the groundwater environment. Groundwater samples at three abandoned mines (Yi, Er and Quantou mines) in the Fengfeng mining district and the underlying Ordovician limestone aquifer were collected to characterize their chemical and isotopic compositions and identify the sources of the mine water. The water was HCO{sub 3}·SO{sub 4}-Ca·Mg type in Er mine and the auxiliary shaft of Yi mine, and HCO{sub 3}·SO{sub 4}-Na type in the main shaft of Quantou mine. The isotopic compositions (δD and δ{sup 18}O) of water in the three abandoned mines were close to that of Ordovician limestone groundwater. Faults in the abandoned mines were developmental, possibly facilitating inflows of groundwater from the underlying Ordovician limestone aquifers into the coal mines. Although the Sr{sup 2+} concentrations differed considerably, the ratios of Sr{sup 2+}/Ca{sup 2+} and {sup 87}Sr/{sup 86}Sr and the {sup 34}S content of SO{sub 4}{sup 2−} were similar for all three mine waters and Ordovician limestone groundwater, indicating that a close hydraulic connection may exist. Geochemical and isotopic indicators suggest that (1) the mine waters may originate mainly from the Ordovician limestone groundwater inflows, and (2) the upward hydraulic gradient in the limestone aquifer may prevent its contamination by the overlying abandoned mine water. The results of this study could be useful for water resources management in this area and other similar mining areas.},
doi = {10.1007/S10040-018-1803-5},
journal = {Hydrogeology Journal},
issn = {1431-2174},
number = 5,
volume = 26,
place = {United States},
year = {2018},
month = {8}
}