已经用多种方法进行了黄土的湿陷性研究,由于研究方法的限制,只能在试验前后推导试验现象,人们比喻为‘黑匣子’。计算机断层扫描仪(CT)是一种无损、定量检测方法,通过对黄土在单轴、三轴、渗水及其综合作用条件下进行的CT扫描和初步图像分析,看到在达到破坏应力前,黄土裂隙自缺损处开始扩大,其发展速率随试验条件而变;水分沿着毛细孔道渗入并扩展,计算出渗水速率及渗水量。通过对CT扫描辅助装置的改造和与计算机图像处理系统的联网,实现了CT图像的彩色显示,纠正了扫描过程的数据偏差,为数据图像的深入处理提供了基础 Various methods have been used to study the loess collapsibility, due to the limitations of research methods, the test can only be derived before and after the test phenomenon, people are compared to ’black box’. Computed Tomography (CT) is a nondestructive and quantitative detection method. Through CT scanning and preliminary image analysis of loess under uniaxial, triaxial, water seepage and their combined effects, it is found that before the failure stress is reached, The fissures of loess began to expand from the defect, and its development rate changed with the experimental conditions. Moisture penetrated and expanded along the capillary channel, calculated the seepage rate and water seepage. Through the reconstruction of CT scanning aids and the connection with computer image processing system, the color display of CT images was realized, the data deviation of scanning process was corrected, which provided the basis for further processing of data images.