Study of Rockburst by Equivalent Material Simulation Tests in Underground Circular Chamber

摘要

A new equivalent coefficient E/λ is put forward in equivalent simulation tests on rockburst, where E is elastic modulus and λ is descending modulus. Using the developed equivalent materials of different values of E/λ, different rockbursts in scale of simulation, type and magnitude can be simulated. The results of simulation for the circular chamber rockburst have proved that the developed equivalent materials are suitable for the simulation tests of rockbursts and have also proved that there is a critical load verified by theoretical analysis for rockbursts in circular chamber.