煤系地层岩石酸碱度计量及形成酸性水倾向性的预测

Acid-Base analysis of coal overburden and prediction of producing acid mine drainage propensity

介绍了煤层覆盖层岩石和煤矿废渣矸石的酸碱度测试计量法的概念及含义,基于煤渣矸所含酸性和碱性矿物的种类及含量,详述了酸碱计量法的主要参数,即最大潜在酸度(MPA)、总潜在碱度(也称中和能,NP)和净中和潜能(NNP)的各种测定方法和表达形式,并提出了利用这些参数预测煤层覆盖层岩石以及采煤产生的废渣矸石在氧化、风化、水解时生成酸性水的可能性。

The concept and meaning of the acid-base accounting methodology was introduces.Based on the acidic and basic minerals types and their contents in the overburden samples,three main parameters,MPA,NP and NNP,and their analysis methods were described in detail with MPA representing maximum potential acidity,NP meaning neutralization potential and NNP the net neutralization potential.The guideline for predicting the overburden as either acid-generating or alkaline was also given in the paper.