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ABSTRACT
Coal and gas outburst and rock burst disasters have obvious dynamic effects in the process of development and occurrence. It is considered as two typical dynamic disasters. In order to study the mechanical effect and characteristics of typical dynamic disasters in underground coal mines, this work analyzed the stress source on coal and surrounding rock, the mechanism of typical dynamic disasters, and the mechanical appearance of dynamic disaster evolvement and occurrence. The results show that there is a significant mechanical effect in typical dynamic disaster evolution and occurrence. The stresses that cause typical dynamic disasters mainly include tectonic stress, the original stress of the coal and rock, and mining-induced stress. Stress is the necessary condition for the occurrence of typical dynamic disasters and plays a leading role in the gestation process of typical dynamic disasters. The stress effect is slow but persistent in a typical dynamic disaster evolution process, and the stress effect is rapid and dramatic in the process of dynamic disaster occurrence. This work puts forward Technical measures to reduce the hazards of typical dynamic disasters combining the stress effects in a typical dynamic disaster evolution process, and the effectiveness of the measures is verified in engineering practice.
Conflicts of interest
The authors declare that they have no conflicts of interest.
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Notes on contributors
Xiangjun Chen
Xiangjun Chen, Associate Professor, Doctoral Tutor, mainly engaged in coal mine safety and gas control.
Liyang Li
Liyang Li, Ph.D. Studied mainly on coal mine safety and gas control.
Lin Wang
Lin Wang, Ph.D., Lecturer, Main Research on Coal Mine Safety and Gas Control.