Study on Pressure Relief Effect of Rock Mass with Different Borehole Parameters

Rock burst is one of the disaster accidents that can easily happen in rock cavern engineering. At present, most commonly used methods to control borehole pressure relief technology. In this paper, influence drilling layout schemes on effect surrounding mass systematically studied. The research results show strength reduction degree, AE evolution characteristics, failure modes samples with different positions, boreholes spacing, dip angles, and forms are different. degree sample an inclined arrangement form largest, followed by being up three-flower or down layout. Using achieve better mass. beneficial cavern. acoustic emission effectively monitor stability However, threshold value occurrence time instability changed after drilled holes. If arranged at mass, may be advanced.