含孔花岗岩破裂过程不同区域声发射特征

doi:10.12068/j.issn.1005-3026.2018.11.026

东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (11): 1653-1657.DOI: 10.12068/j.issn.1005-3026.2018.11.026

含孔花岗岩破裂过程不同区域声发射特征

高祥，刘善军，黄建伟

(东北大学资源与土木工程学院，辽宁沈阳110819)

收稿日期:2017-08-11 修回日期:2017-08-11 出版日期:2018-11-15 发布日期:2018-11-09
通讯作者: 高祥
作者简介:高祥(1990 -)，男，河南周口人，东北大学博士研究生；刘善军(1965-)，男，河北涿鹿人，东北大学教授，博士生导师.冯明杰(1971-)，男，河南禹州人，东北大学副教授; 王恩刚(1962-)，男，辽宁沈阳人，东北大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(41440032) .

Acoustic Emission Characteristics of Different Areas in the Fracture Process of Perforated Granite

GAO Xiang， LIU Shan-jun， HUANG Jian-wei

School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.

Received:2017-08-11 Revised:2017-08-11 Online:2018-11-15 Published:2018-11-09
Contact: LIU Shan-jun
About author:-
Supported by:
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摘要/Abstract

摘要： 利用孔洞对声发射(AE)传播的阻隔作用，对AE探头监测区域进行分区.通过含孔花岗岩双轴加载破坏过程的AE多通道监测实验，研究了岩石变形破坏过程不同区域AE特征及其与破坏模式之间的关系.结果表明:试件的AE探头监测区域分为独测区、共测区、盲测区;试件共有两种破坏形式，“V”型和贯穿型;对于“V”型破坏的试件，主破裂发生在独测区，各通道的AE特征明显不同;对于贯穿型破坏试件，主破裂发生于共测区，各通道的AE特征较为相近.

关键词: 含孔花岗岩, 双轴加载, 声发射, 多通道, 破坏形式

Abstract: The monitoring area of acoustic emission(AE)probes was partitioned by means of the blocking effect of hole on AE propagation. Based on the multi-channel AE monitoring experiment on perforated granite specimen under biaxial loading， the AE characteristics of different areas of specimens in failure process and its relationship with the failure mode were studied. The results show that AE sensors monitoring area of the specimens can be divided into three kinds， the single monitoring zone， the joint monitoring zone， and the blind monitoring zone. There are two kinds of fracture forms， the "V" type and the penetration type. For the specimens with V-type fracture， the main ruptures occur in the single monitoring zone and the AE characteristics of each channel are significantly different. For the specimens with penetration type fracture， the main ruptures happe in the joint monitoring zone and the AE characteristics of each channel are similar.

Key words: perforated granite, biaxial loading, acoustic emission(AE), multi-channel, fracture form

中图分类号:

TU45

高祥，刘善军，黄建伟. 含孔花岗岩破裂过程不同区域声发射特征[J]. 东北大学学报:自然科学版, 2018, 39(11): 1653-1657.

GAO Xiang， LIU Shan-jun， HUANG Jian-wei. Acoustic Emission Characteristics of Different Areas in the Fracture Process of Perforated Granite[J]. Journal of Northeastern University Natural Science, 2018, 39(11): 1653-1657.

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含孔花岗岩破裂过程不同区域声发射特征

Acoustic Emission Characteristics of Different Areas in the Fracture Process of Perforated Granite

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