The Flat-joint bonded-particle material was selected as the basic model for rock simulation.The macro-parameters of rock were calculated through numerical uniaxial compression test and Brazilian splitting test in PFC.Orthogonal design was adopted to conduct numerical tests and multi-factor analysis of variance and regression analysis were utilized to analyze the relationship between macro-parameters and meso-parameters.On this basis,method of matching the meso-parameters for numerical uniaxial compression test and Brazilian splitting test was proposed.According to laboratory tests of limestone,the meso-parameters of limestone were obtained and the PFC simulation of uniaxial compression and Brazilian splitting tests of limestone were conducted.The simulation results are close to the laboratory test results,which validated the effectiveness of the proposed method.
Key words
rock /
PFC /
Flatjoint contact model /
uniaxial compression /
Brazilian splitting
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