Document Type

Conference Paper

Publication Date


Publication Details

Charlie C. Li, Energy sources of rock burst and the influence of the surrounding rock mass, Proceedings of the 2023 Resource Operators Conference, University of Wollongong - Mining Engineering, February 2023, 109-112.


The kinetic energy for rock ejection in a rock burst event is converted from the strain energy stored in the burst rock, a portion of strain energy released from the surrounding rock mass and a portion of seismic energy transferred from fault-slip seismicity. The kinetic energy is mainly contributed by the burst rock itself in a small-scale strain burst, but the energy released from the surrounding rock mass plays a major role in a large-scale rock burst. Intergranular and extensional cracking is dominating in burst-prone rocks, while in the non-burst-prone rocks the dominating cracking is intragranular and shear. Both the crack density and the average opening width of cracks are very small in burst-prone rocks.