红层泥岩崩解定量化特征及微观机理探讨

Quantitative Research and Microcosmic Mechanism Discussion on Red Bed Argillaceous Rock

红层泥岩崩解劣化特性的定量化研究较少。首先选取崩解性红层泥岩为样本,探讨设定了红层泥岩试样崩解研究的试验条件,通过X射线衍射、微细观结构试验成果获取了试样的物质成分及胶结结构,为本研究奠定了物质基础,引入“粒度分形模型”,用分形维数对红层泥岩崩解物的粒度特征进行定量化研究,研究结果表明:试样崩解物颗粒组成具有分形特征,分形维数随干湿循环先增大后趋于动态稳定,红层泥岩崩解特征及机理表明分形维数能够很好地反映其崩解进程,分形维数可作为红层泥岩崩解特性定量化表征参数。

There is rare research on quantitative research of red bed argillaceous rock.Disintegration characteristics of red bed argillaceous rock was chosen as sample and the experimental conditions for the disintegration of red bed argillaceous rock was set up.The material composition and cementation structure of the samples are obtained by X-ray diffraction and micro-structure test,which laid a solid foundation for the study.The granularity fractal model is introduced to quantitatively study of the granularity characteristics of red bed argillaceous rock disintegrating materials.The results show that the granularity composition of the disintegrating materials has fractal characteristics.The fractal dimension increases first and then tends to be dynamic and stable with the dry-wet cycle.The characteristics and mechanism of red bed argillaceous rock disintegrating indicate that the fractal dimension can well reflect the disintegration process of disintegrating red bed rocks.The fractal dimension can be used as a quantitative characterization parameter for the disintegration characteristics of red bed argillaceous rock.