Engineering Mechanics ›› 2019, Vol. 36 ›› Issue (2): 96-103.doi: 10.6052/j.issn.1000-4750.2017.12.0915

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NUMERICAL SIMULATION OF DAMAGE AND FAILURE PROCESS IN ANISOTROPIC BRITTLE ROCKS

YAO Chi1, HE Chen1, JIANG Shui-hua1, YANG Jian-hua1, JIANG Qing-hui1,2   

  1. 1. School of Civil Engineering and Architecture, Nanchang University, Nanchang 330031, China;
    2. School of Civil Engineering, Wuhan University, Wuhan 430072, China
  • Received:2017-12-04 Revised:2018-09-20 Online:2019-02-22 Published:2019-02-22

Abstract: Based on an improved rigid block spring method, using Hoek-Brown criterion as a failure criterion, a numerical model for the simulation of failure process of brittle anisotropic rock is established. In this model, a method for generating anisotropic Voronoi mesh and a function for anisotropic micro parameters assignment are introduced. Then the model is used for the simulation of experiments in published literatures. It indicates that: this method cannot only capture the ‘U’ type curve of compressive strength with regards to the bedding plane orientation and matches well with experiment results in a quantitative manner, but also has the ability to simulate the anisotropic characteristics of deformation qualitatively and quantitatively at the same time.

Key words: rock failure, anisotropy, crack propagation, Rigid block spring method, mesoscopic modeling

CLC Number: 

  • TU452
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