东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (11): 1633-1637.DOI: 10.12068/j.issn.1005-3026.2015.11.025

• 资源与土木工程 • 上一篇    下一篇

含层理构造黑云变粒岩单轴压缩试验及数值模拟

王培涛1, 2， 杨天鸿2， 于庆磊2， 师文豪2   

  1. (1. 北京科技大学 土木与环境工程学院， 北京 100083； 2. 东北大学 资源与土木工程学院， 辽宁 沈阳110819)
  • 收稿日期:2014-07-15 修回日期:2014-07-15 出版日期:2015-11-15 发布日期:2015-11-10
  • 通讯作者: 王培涛
  • 作者简介:王培涛(1987- )，男，河北沧州人，北京科技大学博士后研究人员； 杨天鸿(1968- )，男，辽宁抚顺人，东北大学教授，博士生导师.
  • 基金资助:
    国家重点基础研究发展计划项目(2013CB227902)； 国家自然科学基金资助项目(51174045，11572344).

Uniaxial Compression Test and Numerical Simulation of Stratified Biotite Granulite

WANG Pei-tao1, 2， YANG Tian-hong2， YU Qing-lei2， SHI Wen-hao2   

  1. 1. School of Civil and Environment Engineering，University of Science and Technology Beijing，Beijing 100083，China; 2. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.
  • Received:2014-07-15 Revised:2014-07-15 Online:2015-11-15 Published:2015-11-10
  • Contact: YANG Tian-hong
  • About author:-
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摘要： 应用离散元的接触粘结模型，系统分析了节理单元的强度特性，研究了不同加载方向下节理岩体的强度、破坏模式，并与室内试验结果进行了对比验证.研究发现:对于倾角45°分布层状节理岩体，节理单元强度低于岩石基质强度的15%时，节理对整体力学性质产生显著影响，对比室内试验，节理强度为基质强度约2%~4%时可以有效地模拟节理岩体的力学行为；随着岩层倾角的增加，层状岩体单轴抗压强度逐渐减小到逐渐增大的变化过程，呈“U形”分布.研究结果可为颗粒流离散元方法研究节理岩体力学特性提供参考.

关键词: 层状岩体, 各向异性, 破坏模式, PFC2D, 室内试验, 数值模拟

Abstract: The transversely isotropic rock samples with different dip angles were studied under uniaxial compression using the bonded particle model (BPM) of PFC2D. The strength and failure patterns were explored and compared with the experimental results. The results showed that the mechanical properties are affected significantly when the ratio of joint contact bond strength (both shear and normal) to rock contact bond strength is below 15%. The failure pattern is similar to the experimental result when the ratio falls into the range of approxiamtely 2%~4%. The uniaxial compressive strength decreases firstly at a certain value with the increase of joint angles and increases subsequently with a U-shape. The results can provide a reference for jointed rock mass with PFC2D code.

Key words: stratified rock, anisotropy, failure pattern, PFC2D, experimental test, numerical simulation

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