通过黄土微观结构图像的处理可以很好地提取黄土微观结构要素。本文取通渭老地震区的黄土做震陷实验,应用土体微观结构定量分析系统对不同正弦荷载下震陷土样的微结构图片作定量化结构效应分析,探讨了其不同动应力荷载下的微观结构参数变化规律,并建立了各参数与动应力的对应关系。结果表明,黄土震陷由其微观结构及外部荷载共同决定,各微观要素在震陷过程中有不同变化,孔隙的有效直径、孔径分维、连通率和颗粒定向度的微结构参数变化与残余变形变化基本保持一致。 Through the processing of loess microstructure image, the microstructure elements of loess can be well extracted. In this paper, the loess in Tongwei old seismic zone is used to do the seismic subsidence experiment. The quantitative analysis of the microstructure of the collapsed soil samples under different sinusoidal loads is carried out by using the quantitative analysis system of soil micro-structure. The effects of different dynamic stress loads The microstructure parameters of the law of change, and the establishment of the corresponding parameters and dynamic stress. The results show that the loess seismic subsidence is determined by both its microstructure and external load. The microelements have different changes during the subsidence process. The changes of microstructure parameters such as effective pore diameter, fractal dimension, connectivity and particle orientation Deformation changes basically the same.