Research on Temporal and Spatial Distribution Characteristics of Microseismic Events of Slip-Type Rockburst

Based on the microseismic monitoring data of underground cavern Shuangjiangkou Hydropower Station, internal relationship between rockburst and events is analyzed occurrence mechanism slip-type in Station through change b value to warn risk level rockburst. The results show that are closely related excavation activities, reflects level. smaller is, more large magnitude greater possibility is. was mainly affected by structural plane; it due accumulation elastic strain energy at plane sudden release under action unloading or disturbance, driving block structure surface fast slide, manifested as sliding blocks surrounding rock, forming a “V” shape pit blasting cuneate crater, well destruction with crackle. Compared strained rockburst, damage serious. research can provide reference for prediction prevention similar deep rock engineering.