【摘要】 对演马矿煤矸石进行浸泡和淋溶实验,研究了煤矸石矿井填充对地下水环境的影响.实验测定淋溶液中矿化度最高为6.80 g.L-1,高锰酸盐指数为7.50 mg.L-1,锰指数为2.30 mg.L-1;浸泡试验溶出液中pH值、高锰酸盐指数、氟离子(F-)超过地下水3类标准.结果表明,对地下水产生影响的主要污染因子为矿化度、氟离子、高锰酸盐.锌、锰、铜等重金属溶出率随时间增长较快,但不超标.这表明可以用煤矸石进行矿井填充,以解决煤矸石的污染.更多还原

【Abstract】 According to the immersion and leaching experiments on the coal gangues from Yan-Ma Coal Company,the water pollution of coal gangues mine-fill to ground-water has been studied.The main pollution factors in leaching liquor are the degree of mineralization,fluorine ion,permanganate index and heavy mental-Mn.The maximum value of mineralization in first leaching liquor is 6.80 g·L^-1,permanganate index is 7.50 mg·L^-1,and Mn is 2.30 mg·L^-1.In the soaking experiment,the pH,permanganate index and fluorine ion are also exceed the third standard of ground water quality.The leaching rates of Zn、Mn、Cu increase fast gradually with time passing by,but haven’t exceed the standard.Finally,the conclusion to solve the pollution of coal gangues by the mine-filling,the main factors to impact on ground water qualities are fluorine ion,mineralization and permanganate index.更多还原