raybet体育在线 院报 ›› 2016, Vol. 33 ›› Issue (9): 60-65.DOI: 10.11988/ckyyb.20150566

• 岩土工程 • 上一篇    下一篇

基于Flatjoint接触模型的岩石单轴压缩和巴西劈裂颗粒流模拟研究

刘富有1，2，陈鹏宇3，余宏明1   

  1. 1.中国地质大学武汉 工程学院，武汉 430074；
    2.河南省地质矿产勘查开发局第二地质矿产调查院，郑州 450000；
    3.内江师范学院 地理与资源科学学院，四川 内江 641100
  • 收稿日期:2015-07-07 修回日期:2015-10-12 出版日期:2016-09-25 发布日期:2016-09-25
  • 作者简介:刘富有(1968-)，男，河南邓州人，教授级高级工程师，博士，主要从事工程地质、水文地质和环境地质方面的工作，(电话)0371-55156812(电子信箱)79012983@qq.com。
  • 基金资助:
    国家自然科学基金项目(41272377,41302278)

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

LIU Fu-you1,2,CHEN Peng-yu3,YU Hong-ming   

  1. 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

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摘要： 基于颗粒流平台，选择Flatjoint接触模型作为岩石模拟的基本模型，用单轴压缩和巴西劈裂数值试验测试岩石宏观参数，对数值试验进行正交设计，采用多因素方差分析和回归分析研究宏细观参数之间的关系。在此基础上，提出了基于岩石单轴压缩和巴西劈裂数值试验的细观参数匹配方法。以灰岩的室内试验为基础，对灰岩细观参数进行了标定，实现了灰岩单轴压缩和巴西劈裂的颗粒流模拟，模拟结果与试验结果相接近，验证了本文方法的有效性。

关键词: 岩石, 颗粒流, Flatjoint接触模型, 单轴压缩, 巴西劈裂

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

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