Occurrence and environmental impact of coal mine goaf water in karst areas in China

Jiang, Chunfang; Gao, Xubo; Hou, Baojun; Zhang, Songtao; Zhang, Jianyou; Li, Chengcheng; Wang, Wanzhou

doi:10.1016/j.jclepro.2020.123813

Cited by 51 publications

(16 citation statements)

References 52 publications

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“…Shanxi is the place with the most extensive karst distribution in northern China. There are 19 major karst springs (Figure 2) with stable flows and good water quality [49], which are convenient for centralized development and utilization, and they have become one of the important water supply sources for Shanxi energy bases. According to statistics, there are 265 centralized drinking water sources in Shanxi.…”

Section: Overview Of Acid Mine Drainage (Amd) Studies In Shanximentioning

confidence: 99%

“…In terms of time cycle, AMD will be discharged through different channels after the completion of a water filling and water gathering process of the goaf in Shanxi. Zhang et al [49] pointed out that AMD leaked into the underlying karst aquifer; Li and Wang [58] believed that the outflow of AMD polluted surface water; some scholars believed that AMD was discharged simultaneously to groundwater and surface water [52,62,63]. In fact, the water environment problems in Niangziguan Spring [60] and Jinci Spring [58] caused by AMD are unavoidable problems in water source protection.…”

Section: Predictionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Over the years, with the continuing exploitation of coal resources in Shanxi, water environmental problems such as destruction of water resources and deterioration of water quality have become increasingly prominent. In recent years in particular, with the closure of 8780 coal mines, water pollution caused by AMD has become increasingly serious [49], which has aggravated the shortage of water resources and threatened the safety of the local drinking water supply in Shanxi. On the basis of the previous investigations in the closed coal mines of Shanxi such as Datong coalfield [50,51], Yangquan coalfield [52,53], Taiyuan Xishan coalfield [54][55][56], etc., irreversible changes have taken place in the water-bearing medium structure, hydrodynamic field, chemical field and microorganism.…”

Section: Introductionmentioning

confidence: 99%

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Review: Acid Mine Drainage (AMD) in Abandoned Coal Mines of Shanxi, China

Wang

Zhang

et al. 2020

Water

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Excessive exploitation and massive coal mine closures have brought about extensive goafs in Shanxi where 8780 coal mines have been abandoned in the last 20 years. Acid mine drainage (AMD) poses severe environmental impact and has become a prominent problem in Shanxi abandoned coal mine areas, which has aggravated the shortage of water resources and threatened the safety of the local drinking water supply. The purpose of this review is to protect the precious water resources and maintain sustainable use in Shanxi coal mines and downstream. By retrieving and analyzing about 90 domestic and international publications, a critical review of the AMD research results in Shanxi abandoned coal mines is conducted from the perspective of the formation mechanism, migration and transformation, prediction, treatment and management. The results shows that pyrite is the prerequisite for the formation of AMD, oxygen is the inducement, water is the carrier, and Fe3+ and microorganisms are the catalyst. The roadway system and geological structure are the dominant control factors. Finally, current difficulties and future research are pointed out. It is necessary to further strengthen the systematic research on the geological and hydrogeological conditions of abandoned coal mines, and explore an efficient, cheap, environmental technology, and construct the pollution risk assessment model for the AMD treatment. This study provides a scientific basis for the comprehensive treatment and management of AMD in abandoned coal mines in Shanxi.

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Section: Overview Of Acid Mine Drainage (Amd) Studies In Shanximentioning

confidence: 99%

Section: Predictionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Review: Acid Mine Drainage (AMD) in Abandoned Coal Mines of Shanxi, China

Wang

Zhang

et al. 2020

Water

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“…Giudici established a flow model in a karst aquifer, and Javier Valdes-Abellan established a karst aquifer model (KAGIS model) based on GIS to simulate the movement and influence of pollution [13,14]. Jiang et al established an environment impact model of water in goaves, taking the Jinci Spring as an example, and proved that the water near the coal mine was easily affected by the water from goaves [15].…”

Section: Introductionmentioning

confidence: 99%

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

Ren

Sui

Meng

et al. 2021

Water

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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.

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Characterization of karst conduits by tracer tests for an artificial recharge scheme

Cen

et al. 2021

Hydrogeol J

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Occurrence and environmental impact of coal mine goaf water in karst areas in China

Cited by 51 publications

References 52 publications

Review: Acid Mine Drainage (AMD) in Abandoned Coal Mines of Shanxi, China

Review: Acid Mine Drainage (AMD) in Abandoned Coal Mines of Shanxi, China

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

Characterization of karst conduits by tracer tests for an artificial recharge scheme

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