E3S Web Conf.
Volume 98, 201916th International Symposium on Water-Rock Interaction (WRI-16) and 13th International Symposium on Applied Isotope Geochemistry (1st IAGC International Conference)
|Number of page(s)||5|
|Section||Water-Rock Interaction Controlling Water Quality and Human Health Issues|
|Published online||07 June 2019|
Change of regional water chemistry driven by group coal mining in Changzhi basin, Shanxi, China
Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, 050061 Shijiazhuang, China
2 Institute of Karst Geology, Chinese Academy of Geological Sciences, 541004 Guilin, China
* Corresponding author: email@example.com
Coal mining can deplete groundwater resources and discharge polluted water into the surrounding water bodies, decreasing the quality of ground and surface water. Group coal mining can drastically deteriorate regional water quality due to the overlying effects of multiple mines. As a country, China produces the most coal per year in the world. Group coal mining in China has caused a decline in the quality of many watersheds. This study introduced the regional water quality in Changchi basin, Shanxi province, which contains coal seams covering over 60% of its area and has over 10 active collieries. Coal mine discharge caused the increase of TDS, especially NO3-, in the river receiving the mining discharge. Quality of groundwater was also affected by the contaminated surface water when it was recharged by surface water. Reuse and treatment of mining discharged should be promoted in the area with high intensity of group coal mining.
© The Authors, published by EDP Sciences, 2019
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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