Research on rockburst proneness evaluation method of deep underground engineering based on multi-parameter criterion

The study of rockburst criterion is the key to predict occurrence rockburst. Based on energy principle, a new multi-parameter (RPC) were established. accuracy and applicability some typical engineering examples in China verified by using classical criteria newly proposed RPC. research results show that: RPC comprehensively considers various stress states surrounding rock mass unit, reflects integrity factors, mechanical brittleness factors storage process inoculation. Three classification thresholds (2, 11 110) for four grades none, weak, moderate severe proposed. prediction evaluation basically consistent with actual situation rockburst, which can better reflect overall trend failure deep tunnels.