Coal burst induced by rock wedge parting slip: a case study in Zhaolou coal mine

AbstractRock wedge parting is an important factor that can induce coal burst. In this study, a physical model for the stick-slip model was developed to investigate coal burst induced by rock wedge parting. The Maxwell model was used to explain the stick-slip motion of the rock wedge parting. The evolution of microseismic source locations in the coal face was also obtained to correlate rock wedge parting with coal burst. It was found that superposition of the high static stress concentration and the dynamic stress from the fracture and caving of key stratum induced the coal burst.