Due to the heterogeneity and opacity of rocks, it is difficult to visualize the progressive failure process of rock. A novel cooling–solidification annealing algorithm combined with X-ray computed tomography technology is proposed to study the mechanical behavior (including fracture behavior) of rocks. In this algorithm, the system is annealed in descending order by scale and is constrained by the current scale. Moreover, the gray phase is introduced into the ordinary two-phase reconstruction system to form a new three-phase system. The numerical results show that the proposed method can successfully generate a rock model that is statistically equal to natural rock. The analysis of the rock fracture process shows that the initial internal pores and cracks have an important influence on the cracking evolution and failure mode of rock. The proposed method provides a promising means for understanding the mechanical behavior (including fracture behavior) of rocks.

中文翻译：

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基于冷却凝固退火算法的岩石重建模型断裂分析

由于岩石的非均质性和不透明性，很难将岩石的渐进破坏过程可视化。提出了一种结合X射线计算机断层扫描技术的新型冷却凝固退火算法来研究岩石的力学行为（包括断裂行为）。在该算法中，系统按尺度降序退火，并受当前尺度的约束。并且在普通的两相重构系统中引入灰度相，形成新的三相系统。数值结果表明，所提出的方法可以成功生成统计上与天然岩石相等的岩石模型。岩石破裂过程分析表明，初始内部孔隙和裂缝对岩石的开裂演化和破坏模式有重要影响。