酸碱环境下红层软岩——泥质页岩的崩解特性试验研究

DISINTEGRATION CHARACTERISTICS TEST OF RED-BED SOFT ROCK ARGILLACEOUS SHALE IN ACID AND ALKALI ENVIRONMENT

为了研究酸碱环境对泥质页岩崩解特性的影响,分别对同一风化程度的泥质页岩进行了不同pH溶液中的静态崩解试验和耐崩解试验,得到了pH值变化对泥质页岩崩解的影响规律。结果表明:pH值对泥质页岩的崩解性影响较大,pH值越小的泥质页岩的崩解性越强。崩解物的耐崩解指数随着崩解物粒径减小而增大,随着pH值的减小而减小,酸性条件对泥质页岩耐崩解性的作用效果更明显。

This paper is to realize the disintegration characteristics of argillaceous shale in acid and alkali environment separately.It carries out the static disintegration test and slake disintegration test of argillaceous shale. The influence rule between pH value and disintegration of argillaceous shale are obtained.It shows that the pH value plays an important role in the disintegration of argillaceous shale.The smaller the pH value,the stronger the disintegration.As the grain diameter increases,the slake disintegration index of argillaceous shale can increase. Moreover,the smaller the pH value,the less the slake disintegration index.The acid environment plays a more important role than the alkaline environment.