A study on electrification mechanism during rock burst start-up based on rock damage and destroy

被引：0
|
作者：
Luo H. [1 ]
Liu F. [2 ]
Pan Y. [3 ]
机构：
[1] School of Information, Liaoning University, Shenyang
[2] School of Resources and Civil Engineering, Northeastern University, Shenyang
[3] School of Environment, Liaoning University, Shenyang
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2020年 / 39卷 / 20期
关键词：
Damage theory; Damages localization; Electrification mechanism; Free charge; Rock burst; Rock mechanics;
D O I：
10.13465/j.cnki.jvs.2020.20.009
中图分类号：
学科分类号：
摘要：
The process of free charge come from rock deformation fracture which plays an important role in studying rock burst. A theory model of rock damage electro-mechanical coupling was established and which provides the theoretical basis for the indoor rock charge induction test. Based on equal confining pressure triaxial loading test of granite, sandstone and mudstone, the charge induction law in the start-up process of rock burst was studied. The test results show that charge signals keep steady in rock elastic deformation, rock deformation fracture damages localization after rock burst start-up and a great quantity pulse charge signals were monitored in the process. In the same league rocks charge signals were enhanced with confining pressure while there was obvious different in different rocks. The charge signals at such three types are of different forms after rock burst start-up. Finally, the mechanism of free charge emerges in rock burst start-up was concluded and four rock burst electrification patterns of contacting-stripping, piezoelectric, frictional and cracked was presented. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：67 / 73and81
页数：7314
相关论文
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