岩土力学2012，Vol.33Issue(9)：2575-2580,6.
砂岩脆性临界破坏声发射信息应力比分析
Analysis of critical acoustic emission information of sandstone brittle failure with stress ratio
摘要
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%.关键词
声发射/脆性破坏/重整化/应力-应变曲线Key words
acoustic emission/ brittle failure/ renormalization/ stress-strain curve分类
矿业与冶金引用本文复制引用
孙强,薛雷,朱术云..砂岩脆性临界破坏声发射信息应力比分析[J].岩土力学,2012,33(9):2575-2580,6.基金项目
中国科学院工程地质力学重点实验室开放基金(No.KLEG201106) （No.KLEG201106）
国家自然科学基金项目(No.41102201) （No.41102201）
中央高校基本科研业务费专项资金(No.2010QNA54),江苏高校优势学科建设工程资助项目. （No.2010QNA54）
