Application of Extensible Comprehensive Evaluation to Rockburst Risk in a Deep Long Tunnel

摘要

The occurrence of rockburst in deep underground tunnels has a serious impact on underground works and threatens the safety of construction, so it is particularly important to predict rockburst timely and reasonable. In this paper, according to the actual underground project, select five evaluation indicators, apply matter-element theory, extension set theory and correlation function calculations, use extensible comprehensive evaluation method, to establish a rockburst evaluation model of a deep tunnel in a hydropower station and predict the grade of rockburst. The evaluation results are in line with the actual situation by comparative analysis and field test, so the results are reasonable and it could play a very good guide for latter construction.