A Feasibility Study on Microseismic Monitoring of Rock Burst in Traffic Tunnels

Rocks under high ground stress are in triaxial compression equilibrium, or limit equilibrium, and store a large amount of energy.The unloading process of underground tunnel excavation will inevitably lead to the redistribution of peripheral strain and the concentration of local strain.When it reaches the ultimate strength of the rock, it will fail.If the energy in the rock is greater than the energy used to destroy the rock, then the remaining energy is released as kinetic energy, ejecting the broken rock to form a rock blast.This is the so-called rock blasting phenomenon, which is a kind of geological disaster in areas with high ground stress.With the extensive construction of traffic tunnels, rockburst has become more and more common in the construction of traffic tunnels, and even become the main technical bottleneck [1-9].In the field of traffic tunnels, especially in high ground stress areas, there are thousands of engineering accidents caused by rock