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Hydrogeological Investigation for the Assessment of Spring Pollution Due to Abandoned Mines in a Karst Area

by 1,2, 1,3,*, 1,3 and 1,3
1
School of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116, China
2
China Coal Hydrogeological Bureau Group Company, 18 Dafeng Road, Hongqiao District, Tianjin 300131, China
3
Institute of Mine Water Hazards Prevention and Controlling Technology, China University of Mining and Technology, Xuzhou 221116, China
*
Author to whom correspondence should be addressed.
Academic Editor: Thomas M. Missimer
Water 2021, 13(17), 2399; https://doi.org/10.3390/w13172399
Received: 16 July 2021 / Revised: 27 August 2021 / Accepted: 27 August 2021 / Published: 31 August 2021
(This article belongs to the Section Hydrogeology)
This paper presents a hydrogeological investigation case study for assessing the sources and pathways of spring pollution in a karst area in Guizhou Province, Southern China. Our methods included hydrogeological surveys, geophysical surveys, cave detection, tracer tests, and borehole drilling. The results showed that the pollution of the Longdong Spring is controlled by the amount of rainfall, which also determines the duration of pollution. The concentration of Fe and Mn ions in the spring was found to exceed that in the code for drinking water quality (China) by more than 300 times. The investigations showed that the source of the pollution is the mine water drainage from the abandoned Feilong coal mine, which is located to the northwest of the Longdong Spring. The drainage to the spring was found to occur 24 h after the groundwater level in the goaf reached approximately +908 m above sea level. This indicates a recharge pathway between the abandoned mine and the Longdong Spring. Recommendations for grouting around the spring and sinkhole for pollution control are put forth. View Full-Text
Keywords: spring pollution; karst; tracer test; cave detection; geophysical survey; hydrogeological survey spring pollution; karst; tracer test; cave detection; geophysical survey; hydrogeological survey
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MDPI and ACS Style

Ren, H.; Sui, W.; Meng, X.; Guo, R. Hydrogeological Investigation for the Assessment of Spring Pollution Due to Abandoned Mines in a Karst Area. Water 2021, 13, 2399. https://doi.org/10.3390/w13172399

AMA Style

Ren H, Sui W, Meng X, Guo R. Hydrogeological Investigation for the Assessment of Spring Pollution Due to Abandoned Mines in a Karst Area. Water. 2021; 13(17):2399. https://doi.org/10.3390/w13172399

Chicago/Turabian Style

Ren, Hujun, Wanghua Sui, Xiangdong Meng, and Rui Guo. 2021. "Hydrogeological Investigation for the Assessment of Spring Pollution Due to Abandoned Mines in a Karst Area" Water 13, no. 17: 2399. https://doi.org/10.3390/w13172399

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