Analysis of critical acoustic emission information of sandstone brittle failure with stress ratio

SUN Qiang; XUE Lei; ZHU Shu-yun

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Analysis of critical acoustic emission information of sandstone brittle failure with stress ratio

更新时间：2026-06-25

- Analysis of critical acoustic emission information of sandstone brittle failure with stress ratio
- Vol. 33, Issue 9, (2012)
- 作者机构：
  
  1. 中国矿业大学资源与地球科学学院,江苏,徐州,221116
  2. 中国科学院地质与地球物理研究所工程地质力学重点实验室,北京,100029
  3. 中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏,徐州,221116
- 作者简介：
- 基金信息：
- DOI：
  CLC： TD315
- Online First：12 September 2012，
  
  Published：2012
- 稿件说明：
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SUN Qiang, XUE Lei, ZHU Shu-yun. Analysis of critical acoustic emission information of sandstone brittle failure with stress ratio[J]. 2012, 33(9).
DOI：

SUN Qiang, XUE Lei, ZHU Shu-yun. Analysis of critical acoustic emission information of sandstone brittle failure with stress ratio[J]. 2012, 33(9). DOI：

摘要

根据岩石脆性破坏的本构方程和三维重整化理论，推导出了岩石破裂前声发射信号激增的临界点所对应的应力和岩石峰值应力比值的数学表达式。通过测试深部紫红色砂岩单轴加载变形破裂全过程中力学与声发射特征，得到了全过程力学特征曲线、声发射能量累计数等相关数，发现岩石破裂前声发射突增点所对应的应力与岩石临界点相对应。单轴刚性加载条件下岩石脆性破裂前声发射突增点所对应的应力与峰值应力比值大部分近似在74%左右，误差在±9%以内。

Abstract

According to the constitutive equation of rock brittle fracture and 3D renormalization group theory

it is obtained the mathematical expression of stress ration between the critical point before fracture and peaking point. The acoustic emission (AE) characteristics of deep purple red sandstone under uniaxial compression are tested and obtained in the laboratory. According to the relevant test data

it is shown that the stress ratio between the AE mutation of critical state and peaking state has a value of nearly to 74%

and the deviation is less than ±9%.

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