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通过对 2个矿区不同煤矸石浸泡和淋溶的试验 ,对煤矸石所含部分微量元素对环境的影响进行了试验研究和分析。试验结果显示 ,在高潜水位矿区复垦中 ,充填的煤矸石大半位于潜水位以下 ,煤矸石 (尤其是新矸石 )中氟的淋溶和迁移对水质有影响 ;煤矸石本身重金属含量较低 ,性质较稳定 ,煤矸石的风化分解对可溶态重金属含量无明显影响 ;降雨对煤矸石的淋溶作用不会造成重金属的环境污染。通过科学试验和合理设计 ,证明用煤矸石充填复垦矿区土地是可行的。
Through the experiment of soaking and leaching different coal gangues in two mining areas, the influence of some trace elements contained in coal gangue on environment was studied and analyzed. The results show that in the reclamation of high submersible mine area, most of the gangue filled in the submerged position is below the submersible level, and the leaching and migration of fluorine in the coal gangue (especially the new gangue) has an impact on the water quality. The gangue itself has a low content of heavy metals , The nature of the more stable, weathered coal gangue decomposition of soluble heavy metal content had no significant effect; leaching of coal gangue leaching will not cause heavy metal pollution. Through scientific experiments and rational design, it is proved feasible to fill reclaimed land with coal gangue.