Analysis of stress evolution during sandstone failure process affected by confining pressure

WANG Jian-qiang; YIN Xiao-tao

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Analysis of stress evolution during sandstone failure process affected by confining pressure

更新时间：2026-06-25

- Analysis of stress evolution during sandstone failure process affected by confining pressure
- Vol. 32, Issue 12, (2011)
- 作者机构：
  
  1. 云南地质工程第二勘察院,昆明,650051
  2. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,武汉,430071
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU452
- Online First：13 December 2011，
  
  Published：2011
- 稿件说明：
移动端阅览
WANG Jian-qiang, YIN Xiao-tao. Analysis of stress evolution during sandstone failure process affected by confining pressure[J]. 2011, 32(12).
DOI：

WANG Jian-qiang, YIN Xiao-tao. Analysis of stress evolution during sandstone failure process affected by confining pressure[J]. 2011, 32(12). DOI：

摘要

如何准确无损地获取岩土材料的内部应力演化信息，对于研究围压对材料破坏行为的物理机制有很大帮助。在颗粒流数值平台下，设计了0.0、0.5、1.0 MPa砂岩三轴压缩试验，根据获取的试件破坏形态、宏观应力-应变曲线，左右侧、中间竖向设置的上中下部共计9个测量点测得的x、y、xy方向应力监测结果，分析了材料破坏的力学机制和围压对材料破坏的影响机制，结果表明：上左下右剪切带发展优于上右下左，随着围压的增强，对这种优势有抑制作用，即剪切带更倾向于等速发展，这从微裂纹揭示的破坏形态也可以得到间接印证，围压使得变形更为明显。

Abstract

How to accurately and nondestructively obtain inner stress evolutional data of rock and soil material is helpful to study physical mechanism of material failure affected by confining pressures. The triaxial compression tests of sandstone under confining pressures of 0.0

0.5 and 1.0 MPa are designed based on the particle flow code (PFC) software. According to failure shape

macro-stress- strain curve and stress data in x

xy directions at nine monitoring points on left and right sides or middle of specimen

mechanical mechanism and influence by confining pressure of material failure process are analysed. It is found that the shear band located from upper left corner to lower right one develops enough than shear band situated from upper right corner to lower left corner

which is limited with increase of confining pressure; that is to say shear band tends to expand with same velocity because of confining pressure. It can also be indirectly proved by failure shape explained by microcracks; and that confining pressure makes strain more obvious.

关键词

Keywords

references

Views

795

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

2-D multiscale numerical simulation of rock failure subjected to confining pressure based on virtual multi-dimensional internal bonds

Preliminary study on creep characteristics and model of sandstone under attenuated oscillation disturbance

Evolution of anisotropic mechanical properties and damage model of sandstone under unidirectional freeze-thaw action

Analysis of high temperature damage and modulus of sandstone

Research on effective elastic mechanical properties of medium rank coal

Related Author

ZHANG Zhen-nan

GE Xiu-run

ZHANG Meng-xi

YANG Song

WANG Jun-guang

WEI Zhong-gen

XIN Tian-yu

LIANG Bing

Related Institution

Department of Civil Engineering, Shanghai University

Institute of Geotechnical Engineering, Shanghai Jiaotong University

School of Mechanics and Engineering, Liaoning Technical University

Shenyang Research Institute Co., Ltd., China Coal Technology & Engineering Group

Safety Science and Engineering College, Liaoning Technical University

AI问答

⁰