Abstract: The pressure on a caving face under the legacy pillar of a deep mine is analyzed in detail. The high stress is explained by using the superposition of the static and dynamic loads theory. In order to deal with the high stress, the danger zone of below coal pillar mining working face is divided based on the vibration wave tomographic imaging technology. At the same time, a series of measures is taken to unload the stress. The effect of the measures is proved at basis of the analysis on the mine tremors and stress of caving face. Finally, the theory of dynamic prevention methods on high stress in deep mine is put forward.

Key words: Deep mine, Legacy pillar, Rock burst, Prevention system