Abstract: Most of the existing rockburst index criteria consider one-sided factors,which may misjudge the rockburst risk of some projects,which is not conducive to the prevention and control of rockburst risk. Based on the analysis of the advantages and disadvantages of the existing rockburst index criteria,this paper puts forward a rockburs index considering internal and external factors. The necessary and sufficient conditions of rockburst is fully considered in the new index criteria,that is,the external driving force of rockburst (the stress condition),and the internal condition of rockburst (the inherent energy storage and energy consumption characteristics of rock). It overcomes the deficiency that most existing rockburst index criteria only consider the single factor of internal or external factors,The reliability and stability of the rockburst intensity discrimination results are improved,the potential rockburst risk can be better controlled scientifically,and the safe and efficient production of underground engineering can be realized. The new rockburst index criteria is used to judge the tendency of rockburst at -1 480 m level in a deeply buried gold mine in Shandong Province. The result of warning rockburst intensity using the new rockburst index criteria are thought to be reliable after discussion and analysis. The research results can provide reference for other similar projects.

Key words: deep engineering,rockburst criterion,rockburst mitigation,complete stress-strain curve