Experimental study on fragment characteristics of rockburst induced by uni-directional, bi-directional and tri-directional disturbances

被引：0
|
作者：
Liu D. [1 ,2 ]
Han Z. [1 ,3 ]
Wang C. [2 ]
Hu T. [1 ,3 ]
机构：
[1] State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Ming and Technology, Beijing
[2] State Key Laboratory of Strata Intelligent Control and Green Mining Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao
[3] School of Mechanics and Civil Engineering, China University of Ming and Technology, Beijing
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2021年 / 52卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Disturbance directions; Fractal dimension; Fragment; Impact rockburst; Weibull distribution;
D O I：
10.11817/j.issn.1672-7207.2021.08.025
中图分类号：
学科分类号：
摘要：
The rockbursts induced by uni-directional, bi-directional and tri-directional disturbances were simulated using the self-developed impact rockburst experimental system. The characteristics of fragments mass and size, Weibull distribution and fractal dimension were studied, and the influence of increasing the number of disturbance directions on impact rockburst was discussed. The results show that the fragments show obvious lamellate characteristics and crushing level of impact rockburst fragments is high in uni-directional, bi-directional or tri-directional disturbance conditions. With the increase of the number of disturbance directions, the crushing level of impact rockburst fragments decreases, and the energy dissipated by the formation of fragments decreases. It is shown that the increase in the number of disturbance directions hinders the intensity of impact rockburst. © 2021, Central South University Press. All right reserved.
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页码：2793 / 2804
页数：11
相关论文
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