A novel 3D grain-based model (3D-GBM) based on Voronoi tessellation technology is proposed and implemented into a three-dimensional particle flow code (PFC 3D ) to investigate the micromechanical properties of salt rock at the grain scale. Parameter calibration is performed for numerical test configurations with various microparameters matched with the macroresponses observed in laboratory experiments (e.g., uniaxial compression test, triaxial compression test, and the Brazilian splitting test). Verifications comparing the simulated results and laboratory tests indicate that the 3D-GBM provides an alternative and promising approach for efficiently reproducing the micromechanical behavior of crystalline salt rocks.

中文翻译：

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用于模拟盐岩微观力学行为的基于 3D 颗粒的模型

提出了一种基于 Voronoi 镶嵌技术的新型 3D 基于颗粒的模型 (3D-GBM)，并将其实施到三维粒子流代码 (PFC 3D) 中，以在颗粒尺度上研究盐岩的微观力学特性。对具有与实验室实验中观察到的宏观响应（例如，单轴压缩试验、三轴压缩试验和巴西劈裂试验）相匹配的各种微参数的数值试验配置进行参数校准。比较模拟结果和实验室测试的验证表明，3D-GBM 为有效再现结晶盐岩的微观力学行为提供了一种替代且有前景的方法。