煤矸石填充矿井对地下水环境影响的因子分析评价

以平煤十二矿煤矸石为研究对象,进行了煤矸石矿井填充对地下水环境影响的淋溶模拟实验。针对室内模拟试验结果,选择pH值、F-、SO42-、总硬度、Mn、Pb、As、Hg和电导率9指标,应用因子分析法对煤矸石淋出实验结果进行了综合评价分析,提取4个主因子。评价结果表明:利用中等粒径(3~25 mm)煤矸石填充矿井,对地下水环境的影响程度较低。

Factor Analysis on Influence of Gangue Filled into Goaf on Underground Water Environment in Coal Mine

Taking gangue of the Twelfth Mine in Pingdingshan district for a studied subject,the leaching simulation experiment for studying the influences of gangue filled into goaf on underground water environment had been carried out.In view of indoor simulation experiment,the article selects such nine indexes as pH value,the concentrations of F~-and SO~(2-)_4,conductivity,total hardness,the contents of Mn,Pb,As and Hg as evaluation factors,then applies factor analysis to comprehensively evaluate the experimental results,at last draws out four main factors.The results of evaluation indicate that the influence degree of the gangue on groundwater environment is relatively when gangue with medium-sized(3~25 mm) is filled into underground goaf in mine.