Mechanism of Rock Burst Induced by Mine Earthquake Under Hard Overlying Strata and Prevention Technology

In order to ensure the safety recovery of the 53 lower 01 working face of Jisan Coal Mine, the model of rock burst induced by hard overburden rock seismic shock is established by theoretical analysis. The mechanism of rock burst induced by mine earthquake is studied according to the movement laws and the energy propagation process of the overlying strata, and the radiation area of the strong mine earthquake is determined. The large diameter borehole and roof cracking technique are used to carry out pressure relief in the dangerous area of strong mine earthquake, and the real time monitoring of rock burst is carried out by drilling chip method. The results show that the maximum drilling cuttings in the dangerous area after pressure relief did not exceed the critical value (4.0 kg/m), less than the impact limit of pulverized coal, which effectively prevents the danger of rock burst.