Geomechanics and Engineering

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A systematic approach to the calibration of micro-parameters for the flat-jointed bonded particle model

  • Zhou, Changtai (School of Civil, Environmental and Mining Engineering, The University of Adelaide) ;
  • Xu, Chaoshui (School of Civil, Environmental and Mining Engineering, The University of Adelaide) ;
  • Karakus, Murat (School of Civil, Environmental and Mining Engineering, The University of Adelaide) ;
  • Shen, Jiayi (Institute of Port, Coastal and Offshore Engineering, Zhejiang University)
  • Received : 2017.11.28
  • Accepted : 2018.09.13
  • Published : 2018.12.10
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Abstract

A flat-jointed bonded-particle model (BPM) has been proved to be an effective tool for simulating mechanical behaviours of intact rocks. However, the tedious and time-consuming calibration procedure imposes restrictions on its widespread application. In this study, a systematic approach is proposed for simplifying the calibration procedure. The initial relationships between the microscopic, constitutive parameters and macro-mechanical rock properties are firstly determined through dimensionless analysis. Then, sensitivity analyses and regression analyses are conducted to quantify the relationships, using results from numerical simulations. Finally, four examples are used to demonstrate the effectiveness and robustness of the proposed systematic approach for the calibration procedure of BPMs.

Keywords

Acknowledgement

Supported by : China Scholarship Council (CSC)

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