姚池, 何忱, 蒋水华, 杨建华, 姜清辉. 脆性各向异性岩石破坏过程数值模拟[J]. 工程力学, 2019, 36(2): 96-103. DOI: 10.6052/j.issn.1000-4750.2017.12.0915
引用本文: 姚池, 何忱, 蒋水华, 杨建华, 姜清辉. 脆性各向异性岩石破坏过程数值模拟[J]. 工程力学, 2019, 36(2): 96-103. DOI: 10.6052/j.issn.1000-4750.2017.12.0915
YAO Chi, HE Chen, JIANG Shui-hua, YANG Jian-hua, JIANG Qing-hui. NUMERICAL SIMULATION OF DAMAGE AND FAILURE PROCESS IN ANISOTROPIC BRITTLE ROCKS[J]. Engineering Mechanics, 2019, 36(2): 96-103. DOI: 10.6052/j.issn.1000-4750.2017.12.0915
Citation: YAO Chi, HE Chen, JIANG Shui-hua, YANG Jian-hua, JIANG Qing-hui. NUMERICAL SIMULATION OF DAMAGE AND FAILURE PROCESS IN ANISOTROPIC BRITTLE ROCKS[J]. Engineering Mechanics, 2019, 36(2): 96-103. DOI: 10.6052/j.issn.1000-4750.2017.12.0915

脆性各向异性岩石破坏过程数值模拟

NUMERICAL SIMULATION OF DAMAGE AND FAILURE PROCESS IN ANISOTROPIC BRITTLE ROCKS

  • 摘要: 在改进刚体弹簧方法的基础上,采用Hoek-Brown准则判断界面破坏,提出各向异性Voronoi网格的生成方法,并引入界面细观参数各向异性的赋值函数,最终建立了脆性各向异性岩石损伤破坏过程的数值模拟方法。利用该方法对文献中的试验结果进行了模拟。计算表明,该方法不仅能成功模拟岩石抗压强度随软弱面倾角变化的“U”形规律,定量上与试验结果吻合良好,而且能同时定量模拟岩石变形特性即弹性模量和泊松比的各向异性特征。

     

    Abstract: Based on an improved rigid block spring method, using Hoek-Brown criterion as a failure criterion, a numerical model for the simulation of failure process of brittle anisotropic rock is established. In this model, a method for generating anisotropic Voronoi mesh and a function for anisotropic micro parameters assignment are introduced. Then the model is used for the simulation of experiments in published literatures. It indicates that: this method cannot only capture the ‘U’ type curve of compressive strength with regards to the bedding plane orientation and matches well with experiment results in a quantitative manner, but also has the ability to simulate the anisotropic characteristics of deformation qualitatively and quantitatively at the same time.

     

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