煤矸石矿井充填对地下水环境影响的模拟实验  

Simulation Experiments on the Impact of Gangue Filled in Mined-out Area on Underground Water Environment

作　　者：郑继东[1] 李东艳[2] 胡斌[2] 孙珍全[1] 平瑞[2] 

机构地区：[1]中国矿业大学,北京100083 [2]河南理工大学,河南焦作市454000

出　　处：《矿业研究与开发》2007年第1期76-78,共3页Mining Research and Development

基　　金：河南省自然科学基金项目(0411050700);河南省教育厅自然科学研究项目(2003440226);河南省高校青年骨干教师资助计划项目

摘　　要：以平顶山矿区为例,将煤矸石破碎或4种不同粒径进行连续淋溶实验,模拟其矿井充填后对地下水环境的影响。测定pH值、电导率、氟、总硬度、锌、锰、镉、铬、铜、铅等项目。在实验条件下,矸石溶出液中氟和锰超标,铅偶有超标,pH偏碱性,对地下水环境存在一定影响。且粒径越小,越利于组分溶出。其它组分溶出量少,多未检出。实验表明,煤矸石不属于危险废物,充填是可行的,但必须采取控制措施。The leaching experiments of four kinds of broken gangues with different particle diameters from Pingdingrhan coal mining region were carried out to simulate the impact of gangue filled in mined - out area on the underground water environment, in which the leaching solution＇s pH value, conductivity total hardness, and F, Zn, Mn, Cd, Cr, Cu and Pb contents were measured. Under the condition of experiment, in the leaching solution, the contents of F and Mn exceeded the standards, Pb can be detected occasionally and pH value is on the high side of the standard, so the leaching solution may pollute underground water. The experiments showed that the smaller the particles of gangue are, the easier the leaching is, the contents of other heavy metals were very few and even cannt be detected, gangue does not belong to dangerous solid waste, and gangue filling is possible when strict control measures are adopted.

关 键 词：煤矸石 充填 淋溶 地下水环境 

分 类 号：TD823.7[矿业工程—煤矿开采] X523[矿业工程—矿山开采]