PFC Simulation of Uniaxial Compression and Brazilian Splitting Test of Rock Based on Flat-jointed Bonded-particle Material

doi:10.11988/ckyyb.20150566

Journal of Changjiang River Scientific Research Institute ›› 2016, Vol. 33 ›› Issue (9): 60-65.DOI: 10.11988/ckyyb.20150566

• ROCK SOIL ENGINEERING • Previous Articles Next Articles

PFC Simulation of Uniaxial Compression and Brazilian Splitting Test of Rock Based on Flat-jointed Bonded-particle Material

LIU Fu-you^1,2,CHEN Peng-yu³,YU Hong-ming

1.Faculty of Engineering,China University of Geosciences,Wuhan 430074,China;
2.No.2 Institute of Geological & Mineral Resources of Henan Province,Zhengzhou 450000,China;
3.School of Geography and Resources Science,Neijiang Normal University,Neijiang 641100,China

Received:2015-07-07 Revised:2015-10-12 Published:2016-09-25 Online:2016-09-25

Abstract

Abstract: 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

CLC Number:

TU457

LIU Fu-you,CHEN Peng-yu,YU Hong-ming. PFC Simulation of Uniaxial Compression and Brazilian Splitting Test of Rock Based on Flat-jointed Bonded-particle Material[J]. Journal of Changjiang River Scientific Research Institute, 2016, 33(9): 60-65.

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PFC Simulation of Uniaxial Compression and Brazilian Splitting Test of Rock Based on Flat-jointed Bonded-particle Material

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