干旱区生态环境知识资源中心

Based on the eco-hydrogeological survey, sampling analysis and combined with groundwater flow systems theory, studied a gully gangue yards of Daliuta mine area on groundwater environmental effect. The results showed that pile of coal waste change the original characteristics of groundwater flow systems, the bottom of gangue heap long term immersion in groundwater, the toxic and hazardous substances unleashing, and with the groundwater runoff to the downstream spread. Combined with the eco-hydrogeology and hydrogeochemistry method, using the Loess carry out the gangue vegetation restoration and groundwater pollution remediation: by cover about 0.3m thickness loess at the top of the gangue yards, and planting Alfalfa, Artemisia ordosica, in order to restoration vegetation of the upper part of sites; In the downstream of gangue yards construct the loess permeable reactive barrier, using the loess adsorb the pollutants in the gangue leachate and purify the groundwater. Through the treatment approaches, gangue yards ecological and groundwater environment has been greatly improved.