A new method of rock burst hazard determination based on drilling cuttings limit equation

In order to improve the accuracy of the drilling cuttings method to determine the rock burst hazard, based on the principle and evaluation index of the drilling cuttings method, the actual drilling cuttings data were fitted, and a new method of rock burst hazard determination based on drilling cuttings limit equation (hereinafter referred to as "cuttings limit equation method") was proposed.This method uses the actual amount of drilling cuttings to determine the rock burst hazard autoregressively, and divides the rock burst hazard zone determined by the drilling cuttings method into rock burst hazard zone, potential rock burst hazard zone and non-rock burst hazard zone.The application was carried out with the headentry of 3208 working face in Gucheng Coal Mine as the engineering background.The results show that the boundary equation method of drilling cuttings is consistent with the results of on-site dynamic effect and microseismic monitoring index determination, which can effectively improve the accuracy of drilling cuttings method to determine the rock burst hazard and reduce the possibility of misjudgment.