摘要
利用大津阈值法(OSTU法)对微观岩石CT断层图像中的裂隙和孔隙图像进行了分割,得到了二维CT断层图像中孔隙和裂隙分布。在此基础上,利用Marching Cube算法进行了连续CT断层图像的三维重建,实现了岩石加载试验中裂纹萌生阶段的裂纹分布的可视化。对比二维分割图像和三维重建图像,结果表明,三维重建图像能克服二维分割图像只能从片面上反映岩体裂纹分布的局限性,因而能更加直观、真实、准确地反映岩石加载试验过程中裂纹在空间的分布情况。
Ostu method is used to perform the segmentation on the pore and fissure images in microscopic rock X-ray CT sectional images, by which the pore and fissure distributions in 2D X-ray CT sectional images are obtained. On this basis, Marching Cube algorithm is adopted to conduct a 3D reconstruction of successive CT sectional images, realizing the visualization of the crack distribution at the initiation stage of a rock loading test. The comparison of 2D segmentation images with those of 3D reconstruction shows that 3D reconstructed images has eliminated the restriction that the crack distribution can only be reflected from a planer surface in 2D segmented images and therefore, can reflect the crack spatial distribution in rock loading process in a more intuitive, true and accurate manner.
出处
《金属矿山》
CAS
北大核心
2009年第4期109-113,共5页
Metal Mine
