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利用二维数字图像方法研究了在土壤干燥过程中表面裂隙方向分布的演化状况。结果表明，随着干燥过程的持续，裂隙的长度、宽度、面积和分数维均趋于增加，但裂隙的方向分布则逐渐趋向均匀。
Using two-dimensional digital image method, the evolution of surface crack distribution in soil drying process was studied. The results show that with the continuous drying process, the length, width, area and fractal dimension of fractures all tend to increase, but the direction of fracture distribution tends to be uniform.