Bifurcation and chaos analysis of coal and rock damage under uniaxial compression based on CT values

YIN Guang-zhi1; HUANG Gun1; DAI Gao-fei1; SUN Guo-wen1

doi:10.16285/j.rsm.2006.09.006

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Bifurcation and chaos analysis of coal and rock damage under uniaxial compression based on CT values

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- Bifurcation and chaos analysis of coal and rock damage under uniaxial compression based on CT values
- Issue 9, Pages: 1465-1470(2006)
- 作者机构：
  
  1. 重庆大学资源及环境科学学院
  2. 重庆大学资源及环境科学学院重庆400044重庆大学西南资源开发及环境灾害控制工程教育部重点实验室
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2006.09.006
  CLC： TD315
- Published：2006
- 稿件说明：
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[1]尹光志,黄滚,代高飞,孙国文.基于CT数的煤岩单轴压缩破坏的分叉与混沌分析[J].岩土力学,2006(09):1465-1470.

YIN Guang-zhi1, HUANG Gun1, DAI Gao-fei1, et al. Bifurcation and chaos analysis of coal and rock damage under uniaxial compression based on CT values[J]. 2006, (9): 1465-1470.
[1]尹光志,黄滚,代高飞,孙国文.基于CT数的煤岩单轴压缩破坏的分叉与混沌分析[J].岩土力学,2006(09):1465-1470. DOI： 10.16285/j.rsm.2006.09.006.

YIN Guang-zhi1, HUANG Gun1, DAI Gao-fei1, et al. Bifurcation and chaos analysis of coal and rock damage under uniaxial compression based on CT values[J]. 2006, (9): 1465-1470. DOI： 10.16285/j.rsm.2006.09.006.

摘要

利用CT机对煤岩在单向压缩应力状态下的破裂演化过程进行了实时扫描

采用现代非线性科学的分叉和混沌理论对煤岩在单向压缩状态下破坏的演化过程进行了研究

对各级应力状态下煤岩的各扫描断面的CT数进行了统计分析

并在此基础上建立了CT数变化的数学模型

其结果表明:当表征煤岩微裂纹存活比和闭合效应的特征量取一定值时

其CT数的变化可用Logistic方程来描述

具有分叉与混沌特征。

Abstract

A uniaxial compression test on coal and rock was conducted with CT scanning to monitor the damage process of coal and rock in real-time. A mathematical model has been established to analyze the experimental results on the basis of modern nonlinear theories of bifurcation and chaos. The results show that the CT values and stress can be described by Logistic equation. The process of coal and rock damage has the characteristics of bifurcation and chaos.

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Related Author

DAI Gao-fei1

YIN Guang-zhi2

PI Wen-li2

LI Dong-wei2

SUN De-an

CHEN Li-wen

ZHAO Kui

ZHANG Yong-xing

Related Institution

Department of Geotechnical Engineering, Tongji University

The Key Laboratory of the Exploitation of Southwest Resources & the environmental Hazards Control Engineering, Ministry of Education, Chongqing university

Department of Civil Engineering, Shanghai University

Faculty of Architectural and Surveying Engineering, Jiangxi Univesity of Science and Technology

College of Civil Engineering, Chongqing University

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