孔隙流体对岩体变形局部化的影响及数值模拟研究

详细信息

收稿日期: 2001-03-11

STUDY ON EFFECT OF PORE PRESSURE ON STRAIN LOCALIZATION OF ROCK AND DIGITAL SIMULATION

Received Date: 11 March 2001

摘要: 本文首先叙述了孔隙流体对固体变形局部化影响的若干研究进展,并利用三维连续体快速拉格朗日分析,模拟了孔隙压力对岩体变形局部化应变场(剪切带)的影响。数值模拟结果表明,孔隙压力对变形局部化应变场有较大影响,随着孔隙压力的增加剪切带趋于不明显,岩体试件倾向于发生拉伸破坏。
- 岩体 /
- 流体 /
- 变形局部化 /
- 剪切带 /
- 孔隙压力
Abstract: Firstly,a series of advance on effect of pore pressure on strain localization of solid has been introduced in this paper Secondly,the effect of pore pressure on strain localization(shear bands) of the rock has been modeled based upon fast Lagrangian analysis.The results modeled show that the pore pressure has an great influence on the strain localization;The increase of pore pressure prevents shear bands from developing fully and causes tension failure of rock sample.
- rock /
- fluid /
- strain localization /
- shear bands /
- pore pressure