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Abstract:The roof fall, spalling and other ground pressure disasters were easy to occur in the process of deep mining in kilometer well mining area of Hatu Gold Mine, which affected the progress and safety of subsequent mining. The deformation characteristic of surrounding rock was analyzed by the spatiotemporal evolution of microseismic events. The key areas with strong ground pressure activities were divided. The early warning information of rockburst and large-scale rock mass fracture was analyzed based on the variation of cumulative apparent volume and energy index of microseismic events. Some protective measures such as strengthening support were taken in time according to the early warning information, and good results were achieved.
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