Application of regional energy criterion in the prevention and control of coal mine rockburst. Issue 5 (July 2020)

• Record Type: Journal Article
• Authors: Meng, Fanbao; Huang, Jing; Xiao, Peng; Pang, Da; Jing, Honghai
• Is Part Of: IOP conference series. Volume 546:Issue 5(2020)
• Publication Date: 2020-07
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/546/5/052017
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: The current coal mine dynamic disasters severely restrict the high production and efficiency of coal mines. How to use modern mechanics to predict the rockburst scientifically and accurately has been paid more and more attention. In this study, the mechanism of coal mine rockburst is studied by the theory of fracture mechanics, the evolution process of coal mine rockburst is revealed from the energy point of view, the regional energy criterion of coal mine rockburst risk is established. The distribution of stress and plastic zone in the field is analyzed by FLAC 3D . Based on theoretical analysis, the elastic energy cloud chart is established by using the FISH command to simulate the energy accumulation of roadway excavation. The results show that the tendency criterion of rockburst based on elastic strain energy well reflects the stage rule of damage evolution in the process of mining stress evolution, which provides an effective test basis for evaluating the risk of rockburst through energy parameters in the engineering field. This research has a certain theoretical guidance and practical value l significance for the prevention of rockburst.