Study progress of failure behaviors and nonlinear model of deep coal-rock combined body

被引：0
|
作者：
Zuo J. [1 ,2 ]
Chen Y. [3 ,4 ]
Song H. [1 ]
机构：
[1] School of Mechanics and Civil Engineering, China University of Mining & Technology (Beijing), Beijing
[2] State Key Laboratory of Coal Resources and Safe Mining, China University of Mining & Technology (Beijing), Beijing
[3] School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo
[4] Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, Jiaozuo
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：
Acoustic emission; Bursting liability; Coal-rock combined body; Crack evolution model;
D O I：
10.11817/j.issn.1672-7207.2021.08.002
中图分类号：
学科分类号：
摘要：
The research on the failure mechanical behavior and model of coal-rock combined body is a key point in the study of deep coal mining dynamics. In deep coal mining, the overall failure behavior of coal-rock combined body with mining disturbance is more and more obvious. In recent years, with the gradual improvement of test methods, Chinese scholars have carried out systematic research on the deformation and failure behavior of coal-rock combined body. Firstly,the mechanical characteristics of coal-rock combined body under loading were introduced and the differences between coal-rock combined body and coal rock monomer were compared and analyzed. Secondly, the bursting liability of coal-rock combined body and its influencing factors, such as loading rate, combination mode, coal rock height ratio, etc. were introduced. The acoustic emission characteristics of coal-rock combined body in the process of loading and failure and the distribution of acoustic emission were discussed. Then, the crack evolution law of coal-rock combined body in the process of loading deformation and failure was analyzed, and the crack closure model, crack opening model and post peak crack evolution model of coal-rock combined body based on crack evolution were summarized. Finally, the future research trend of failure behaviors of coal-rock combined body was prospected. © 2021, Central South University Press. All right reserved.
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页码：2510 / 2521
页数：11
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