The influences of coal mining on the large karst springs in North China |
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Authors: | Qiang Wu Li Ting Xing Chun He Ye Yuan Zhang Liu |
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Institution: | (1) College of Geoscience and Surveying Engineering, China University of Mining and Technology (Beijing), 100083 Beijing, China;(2) School of City Development, University of Jinan, 250002 Jinan, Shandong, China; |
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Abstract: | Environmental damage, to a greater or lesser degree, is caused by coal mining. On the basis of analyzing the hydrogeological
conditions of the mining areas, this paper provides a sum-up of the characteristics of water disasters in North China-type
Coalfield. Researching into the Baimai Spring group, this paper explores the relation between karst water and groundwater
of coal-measure strata, using the methods of pumping test, dynamic observation, and tracer test. After working over the impact
of mine water-inrush on spring dynamics, this paper estimates the contributory level of karst water to mining drainage. This
paper holds that the mine water-inrush mainly results from karst water, with the fault structures acting as channels; the
keys of mine water-inrush are faulty density, intersection and endpoint fault. Finally, this paper suggests that mining below
Mine-9 be forbidden, and that below Mine-7 be properly mined, which provides the scientific basis for preserving springs and
preventing water disasters in the mining areas. |
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