电镜图像在黄土结构性研究中应用的几个问题

Discussion on the Application of SEM Images to the Study for Loess Fabric

对电镜图像在黄土微结构研究中的问题进行了探讨。因为观察放大倍数不同 ,黄土的结构性图像显示出"尺度效应" ,为此文中定义了黄土结构性的分类以避免笼统使用"微结构"这一词所带来的指代不准确。结合土力学研究实际 ,文中对黄土孔隙分类提出了新的认识 ,并建立了新的分类标准以便利于研究应用。最后 ,作者对研究选用黄土电镜结构性图像的原则作了综述。

The application of SEM microstructure images to the study for the structure properties of loess is discussed.Owing to the 'Scale effect' of observed loess fabric under the different times of magnification,the classification of loess fabric is defined in this paper to aviod the uncertainty in the description of the fabric natures which causes from the use of the general term 'microstructure'. Based on the study for the soil mechanics,a new classification of the pores of loess is also presented to reflect the reality of the pores in their formation mechanism.The general principles for the selection of SEM images in the study are summarized.