Influence of rock micro-scale properties and material heterogeneity on rock engineering modeling

岩石微观特性和材料非均质性对岩石工程建模的影响

• 批准号: 341275-2012
• 负责人: Grasselli, Giovanni
• 金额: $ 1.75万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=527242
• 关键词: Influence; rock; micro; scale; properties

Mechanical and geometrical properties of rock at grain scale (micro-scale) govern the behaviour of rock-masses at all scales. In recent years several micromechanical modeling techniques (e.g., DEM, FEM/DEM, PFC) have been developed to simulate large scale rock engineering phenomena. Even though these numerical methods use micro-scale input parameters, to date, it does not exist any clear procedure on how to relate them to measured material properties, thus, researchers often use cumbersome numerical procedures to calibrate and verify their models.

岩石在颗粒尺度（微观尺度）上的力学和几何性质决定着所有尺度上的岩体行为。近年来，一些微机械建模技术（例如，离散元法（DEM）、有限元/离散元法（FEM/DEM）、过程控制法（PFC）等已发展到模拟大尺度岩石工程现象。尽管这些数值方法使用微尺度输入参数，但迄今为止，还没有任何明确的程序来将它们与测量的材料性质联系起来，因此，研究人员经常使用繁琐的数值程序来校准和验证他们的模型。