Abstract
Coal refuse, from coal mining and coal processing, is the most important source of coal mine. Based on the analysis of the contamination and its migration, some countermeasures on the control of contamination in situ were put forward. The research showed that: the contamination of coal refuse was mainly due to the existence of a large number of pollutants, open-air dumps, oxidation, acidification and spontaneous combustion, and its pollution migration mainly through wind and water. In-situ control of coal refuse pollution is the most effective means because coal refuses piled up and the presence of large quantities of pollutants. Slurry ejection, adding some inhibiting materials to inhibit oxidation (selective bactericide, reducing bacteria, alkaline material) and surface coverage are appropriate control measures in situ. The integration of multi-layer coverage to inhibit contamination and ecological restoration could be the ultimate direction for pollution control of coal refuse piles.
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