煤矸石填充煤矿采空区的环境影响试验研究

Experiment study of environmental impact during underground filling the goaf with gangues

在对平顶山煤矿集团十二矿采用矸石填充矿井采空区进行深入调整研究的基础上,以十二矿煤矸石为试验对象,进行了浸泡实验,测定浸出液的pH值、F-浓度以及Cd、Cr6+、Zn、Mn、Pb、Cu的含量等对地下水有影响的几个指标,再加以综合分析研究。试验结果表明:所测指标基本符合国家标准,对地下水环境的影响因子主要是pH值和F-。

On the basis of a thorough investigation and study to the filling the goaf with gangue of the 12th mine of the Pingdingshan Coal Group, this paper has made the experiment of extraction and measure some index values of the influencing factors to ground water, including the pH value, the content of F^-, Cd, Cr^(6+), Zn, Mn, Pb, Cu. By a synthetical study we have come to a conclusion that these indexes measure up to the national standard, and the main influencing factors to groundwater are pH value and F^-.