A study on electrification mechanism during rock burst start-up based on rock damage and destroy
LUO Hao1，LIU Feiyu2，PAN Yishan3
1. School of Information, Liaoning University, Shenyang 110036, China;
2. School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China;
3. School of Environment, Liaoning University, Shenyang 110036, China
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.
罗浩1，刘飞宇2，潘一山3. 基于岩体损伤破坏岩爆启动起电规律研究[J]. 振动与冲击, 2020, 39(20): 67-73.
LUO Hao1，LIU Feiyu2，PAN Yishan3. A study on electrification mechanism during rock burst start-up based on rock damage and destroy. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(20): 67-73.
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